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Home Return to list Heat Advisory 0002 Issued by the Chicago Forecast Office
Action: New Issued At: 2025-07-22 03:21:38 989 WWUS73 KLOT 220821 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 321 AM CDT Tue Jul 22 2025 INZ001-002-010-011-019-221830- /O.NEW.KLOT.HT.Y.0002.250723T1800Z-250724T0000Z/ Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Fowler, Roselawn, Portage, Morocco, DeMotte, Merrillville, Chesterton, Rensselaer, Oxford, Hammond, Valparaiso, Kentland, and Gary 321 AM CDT Tue Jul 22 2025 /421 AM EDT Tue Jul 22 2025/ ...HEAT ADVISORY IN EFFECT FROM 1 PM CDT /2 PM EDT/ TO 7 PM CDT /8 PM EDT/ WEDNESDAY... * WHAT...Heat index values up to 105 expected. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...From 1 PM CDT /2 PM EDT/ to 7 PM CDT /8 PM EDT/ Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ003>006-008-010>013-019>021-023-032-033-039-106>108-221830- /O.CON.KLOT.XH.A.0002.250723T1500Z-250725T0300Z/ Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-Northern Will-Southern Will-Eastern Will- Including the cities of Woodstock, Dwight, Peotone, Bourbonnais, Paxton, Naperville, Wheaton, Mundelein, Kankakee, Algonquin, Sycamore, Aurora, Crete, Oregon, Rochelle, Carol Stream, Dixon, Mendota, Belvidere, Minooka, Elgin, Watseka, Gibson City, Joliet, Marseilles, Oswego, Bolingbrook, McHenry, DeKalb, Downers Grove, Mokena, Plainfield, Ottawa, Coal City, Pontiac, Channahon, Manhattan, La Salle, Bradley, Waukegan, Gurnee, Byron, Crystal Lake, Lombard, Streator, Gilman, Buffalo Grove, Wilmington, Yorkville, Beecher, Fairbury, Rockford, Plano, and Morris 321 AM CDT Tue Jul 22 2025 ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY EVENING... * WHAT...Dangerously hot conditions with heat index values of 105 to 115 possible. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...From Wednesday morning through Thursday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-221830- /O.CON.KLOT.XH.A.0002.250723T1500Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Oak Forest, Palatine, Lemont, Evanston, Orland Park, Des Plaines, Northbrook, Schaumburg, Chicago, Cicero, Oak Park, La Grange, Calumet City, Park Forest, and Oak Lawn 321 AM CDT Tue Jul 22 2025 ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY EVENING... * WHAT...Dangerously hot conditions with heat index values of 105 to 110 possible. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...From Wednesday morning through Thursday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Heat indices late Wednesday night are not likely to drop much below 90 degrees, particularly in the city. Therefore, little to no heat relief is expected until sometime Thursday night. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Birk Action: Continued Issued At: 2025-07-22 08:55:18 718 WWUS73 KLOT 221355 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 855 AM CDT Tue Jul 22 2025 INZ001-002-010-011-019-230000- /O.CON.KLOT.HT.Y.0002.250723T1800Z-250724T0000Z/ Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Merrillville, Kentland, Valparaiso, Portage, DeMotte, Gary, Rensselaer, Fowler, Morocco, Hammond, Roselawn, Oxford, and Chesterton 855 AM CDT Tue Jul 22 2025 /955 AM EDT Tue Jul 22 2025/ ...HEAT ADVISORY REMAINS IN EFFECT FROM 1 PM CDT /2 PM EDT/ TO 7 PM CDT /8 PM EDT/ WEDNESDAY... * WHAT...Heat index values up to 105 expected. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...From 1 PM CDT /2 PM EDT/ to 7 PM CDT /8 PM EDT/ Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ003>006-008-010>013-019>021-023-032-033-039-106>108-230000- /O.CON.KLOT.XH.A.0002.250723T1500Z-250725T0300Z/ Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-Northern Will-Southern Will-Eastern Will- Including the cities of Morris, Wilmington, Paxton, Pontiac, Yorkville, Dwight, Sycamore, Dixon, Bourbonnais, Manhattan, Plainfield, Crystal Lake, Beecher, La Salle, Rockford, DeKalb, McHenry, Bolingbrook, Belvidere, Wheaton, Waukegan, Kankakee, Oswego, Joliet, Mokena, Buffalo Grove, Fairbury, Minooka, Mendota, Oregon, Gibson City, Mundelein, Carol Stream, Peotone, Ottawa, Downers Grove, Byron, Coal City, Bradley, Gilman, Lombard, Gurnee, Rochelle, Streator, Elgin, Plano, Woodstock, Aurora, Naperville, Watseka, Marseilles, Channahon, Crete, and Algonquin 855 AM CDT Tue Jul 22 2025 ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY EVENING... * WHAT...Dangerously hot conditions with heat index values of 105 to 115 possible. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...From Wednesday morning through Thursday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-230000- /O.CON.KLOT.XH.A.0002.250723T1500Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Northbrook, Oak Lawn, Palatine, Oak Park, La Grange, Oak Forest, Lemont, Evanston, Chicago, Cicero, Orland Park, Des Plaines, Park Forest, Calumet City, and Schaumburg 855 AM CDT Tue Jul 22 2025 ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY EVENING... * WHAT...Dangerously hot conditions with heat index values of 105 to 110 possible. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...From Wednesday morning through Thursday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Heat indices late Wednesday night are not likely to drop much below 90 degrees, particularly in the city. Therefore, little to no heat relief is expected until sometime Thursday night. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Residents of the city of Chicago can call 3 1 1 to access city services, including seeking well being checks and location of nearest cooling centers. && $$ Ogorek Action: Time and Area Extended Issued At: 2025-07-22 14:09:53 695 WWUS73 KLOT 221909 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 209 PM CDT Tue Jul 22 2025 ILZ003>005-008-010-011-230515- /O.UPG.KLOT.XH.A.0002.250723T1500Z-250725T0300Z/ /O.EXB.KLOT.HT.Y.0002.250723T1500Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of Belvidere, McHenry, Rochelle, Dixon, Sycamore, Rockford, Byron, DeKalb, Oregon, Algonquin, Crystal Lake, and Woodstock 209 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY IN EFFECT FROM 10 AM TO 10 PM CDT WEDNESDAY... * WHAT...Peak afternoon heat index values of 100 to 108 expected. * WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, and McHenry Counties. * WHEN...From 10 AM to 10 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ006-012-013-019>021-023-032-033-039-106>108-230515- /O.UPG.KLOT.XH.A.0002.250723T1500Z-250725T0300Z/ /O.EXB.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will- Including the cities of Buffalo Grove, Waukegan, Joliet, Bourbonnais, Dwight, Marseilles, Crete, Kankakee, Gurnee, Ottawa, Naperville, Oswego, Minooka, Aurora, Lombard, Plainfield, Bradley, Fairbury, Elgin, Gilman, Paxton, Plano, Bolingbrook, Yorkville, Coal City, Carol Stream, Channahon, Downers Grove, Manhattan, Streator, Wheaton, La Salle, Mendota, Mundelein, Peotone, Gibson City, Morris, Pontiac, Beecher, Mokena, Watseka, and Wilmington 209 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY IN EFFECT FROM 10 AM WEDNESDAY TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...From 10 AM Wednesday to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-230515- /O.UPG.KLOT.XH.A.0002.250723T1500Z-250725T0300Z/ /O.EXB.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Park Forest, Oak Forest, Oak Lawn, Lemont, Cicero, La Grange, Orland Park, Schaumburg, Oak Park, Calumet City, Des Plaines, Northbrook, Chicago, Palatine, and Evanston 209 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY IN EFFECT FROM 10 AM WEDNESDAY TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 107 expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...From 10 AM Wednesday to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...It will stifling in the city of Chicago, even at night. Heat indices will remain in the 90s through the evening hours Wednesday, only falling below 90 degrees for a few hours late Wednesday night into early Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Residents of the city of Chicago can call 3 1 1 to access city services, including seeking well being checks and for the location of the nearest cooling center. && $$ INZ001-002-010-011-019-230515- /O.EXT.KLOT.HT.Y.0002.250723T1800Z-250725T0300Z/ Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Rensselaer, Fowler, Oxford, Roselawn, Chesterton, Valparaiso, Kentland, Hammond, Merrillville, Morocco, DeMotte, Gary, and Portage 209 PM CDT Tue Jul 22 2025 /309 PM EDT Tue Jul 22 2025/ ...HEAT ADVISORY NOW IN EFFECT FROM 1 PM CDT WEDNESDAY TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 105 expected. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...From 1 PM CDT Wednesday to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ - Izzi Action: Time and Area Extended Issued At: 2025-07-22 14:09:53 695 WWUS73 KLOT 221909 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 209 PM CDT Tue Jul 22 2025 ILZ003>005-008-010-011-230515- /O.UPG.KLOT.XH.A.0002.250723T1500Z-250725T0300Z/ /O.EXB.KLOT.HT.Y.0002.250723T1500Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of Belvidere, McHenry, Rochelle, Dixon, Sycamore, Rockford, Byron, DeKalb, Oregon, Algonquin, Crystal Lake, and Woodstock 209 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY IN EFFECT FROM 10 AM TO 10 PM CDT WEDNESDAY... * WHAT...Peak afternoon heat index values of 100 to 108 expected. * WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, and McHenry Counties. * WHEN...From 10 AM to 10 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ006-012-013-019>021-023-032-033-039-106>108-230515- /O.UPG.KLOT.XH.A.0002.250723T1500Z-250725T0300Z/ /O.EXB.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will- Including the cities of Buffalo Grove, Waukegan, Joliet, Bourbonnais, Dwight, Marseilles, Crete, Kankakee, Gurnee, Ottawa, Naperville, Oswego, Minooka, Aurora, Lombard, Plainfield, Bradley, Fairbury, Elgin, Gilman, Paxton, Plano, Bolingbrook, Yorkville, Coal City, Carol Stream, Channahon, Downers Grove, Manhattan, Streator, Wheaton, La Salle, Mendota, Mundelein, Peotone, Gibson City, Morris, Pontiac, Beecher, Mokena, Watseka, and Wilmington 209 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY IN EFFECT FROM 10 AM WEDNESDAY TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...From 10 AM Wednesday to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-230515- /O.UPG.KLOT.XH.A.0002.250723T1500Z-250725T0300Z/ /O.EXB.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Park Forest, Oak Forest, Oak Lawn, Lemont, Cicero, La Grange, Orland Park, Schaumburg, Oak Park, Calumet City, Des Plaines, Northbrook, Chicago, Palatine, and Evanston 209 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY IN EFFECT FROM 10 AM WEDNESDAY TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 107 expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...From 10 AM Wednesday to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...It will stifling in the city of Chicago, even at night. Heat indices will remain in the 90s through the evening hours Wednesday, only falling below 90 degrees for a few hours late Wednesday night into early Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Residents of the city of Chicago can call 3 1 1 to access city services, including seeking well being checks and for the location of the nearest cooling center. && $$ INZ001-002-010-011-019-230515- /O.EXT.KLOT.HT.Y.0002.250723T1800Z-250725T0300Z/ Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Rensselaer, Fowler, Oxford, Roselawn, Chesterton, Valparaiso, Kentland, Hammond, Merrillville, Morocco, DeMotte, Gary, and Portage 209 PM CDT Tue Jul 22 2025 /309 PM EDT Tue Jul 22 2025/ ...HEAT ADVISORY NOW IN EFFECT FROM 1 PM CDT WEDNESDAY TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 105 expected. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...From 1 PM CDT Wednesday to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ - Izzi Action: Time and Area Extended Issued At: 2025-07-22 14:09:53 695 WWUS73 KLOT 221909 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 209 PM CDT Tue Jul 22 2025 ILZ003>005-008-010-011-230515- /O.UPG.KLOT.XH.A.0002.250723T1500Z-250725T0300Z/ /O.EXB.KLOT.HT.Y.0002.250723T1500Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of Belvidere, McHenry, Rochelle, Dixon, Sycamore, Rockford, Byron, DeKalb, Oregon, Algonquin, Crystal Lake, and Woodstock 209 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY IN EFFECT FROM 10 AM TO 10 PM CDT WEDNESDAY... * WHAT...Peak afternoon heat index values of 100 to 108 expected. * WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, and McHenry Counties. * WHEN...From 10 AM to 10 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ006-012-013-019>021-023-032-033-039-106>108-230515- /O.UPG.KLOT.XH.A.0002.250723T1500Z-250725T0300Z/ /O.EXB.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will- Including the cities of Buffalo Grove, Waukegan, Joliet, Bourbonnais, Dwight, Marseilles, Crete, Kankakee, Gurnee, Ottawa, Naperville, Oswego, Minooka, Aurora, Lombard, Plainfield, Bradley, Fairbury, Elgin, Gilman, Paxton, Plano, Bolingbrook, Yorkville, Coal City, Carol Stream, Channahon, Downers Grove, Manhattan, Streator, Wheaton, La Salle, Mendota, Mundelein, Peotone, Gibson City, Morris, Pontiac, Beecher, Mokena, Watseka, and Wilmington 209 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY IN EFFECT FROM 10 AM WEDNESDAY TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...From 10 AM Wednesday to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-230515- /O.UPG.KLOT.XH.A.0002.250723T1500Z-250725T0300Z/ /O.EXB.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Park Forest, Oak Forest, Oak Lawn, Lemont, Cicero, La Grange, Orland Park, Schaumburg, Oak Park, Calumet City, Des Plaines, Northbrook, Chicago, Palatine, and Evanston 209 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY IN EFFECT FROM 10 AM WEDNESDAY TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 107 expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...From 10 AM Wednesday to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...It will stifling in the city of Chicago, even at night. Heat indices will remain in the 90s through the evening hours Wednesday, only falling below 90 degrees for a few hours late Wednesday night into early Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Residents of the city of Chicago can call 3 1 1 to access city services, including seeking well being checks and for the location of the nearest cooling center. && $$ INZ001-002-010-011-019-230515- /O.EXT.KLOT.HT.Y.0002.250723T1800Z-250725T0300Z/ Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Rensselaer, Fowler, Oxford, Roselawn, Chesterton, Valparaiso, Kentland, Hammond, Merrillville, Morocco, DeMotte, Gary, and Portage 209 PM CDT Tue Jul 22 2025 /309 PM EDT Tue Jul 22 2025/ ...HEAT ADVISORY NOW IN EFFECT FROM 1 PM CDT WEDNESDAY TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 105 expected. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...From 1 PM CDT Wednesday to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ - Izzi Action: Time Extended Issued At: 2025-07-22 14:09:53 695 WWUS73 KLOT 221909 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 209 PM CDT Tue Jul 22 2025 ILZ003>005-008-010-011-230515- /O.UPG.KLOT.XH.A.0002.250723T1500Z-250725T0300Z/ /O.EXB.KLOT.HT.Y.0002.250723T1500Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of Belvidere, McHenry, Rochelle, Dixon, Sycamore, Rockford, Byron, DeKalb, Oregon, Algonquin, Crystal Lake, and Woodstock 209 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY IN EFFECT FROM 10 AM TO 10 PM CDT WEDNESDAY... * WHAT...Peak afternoon heat index values of 100 to 108 expected. * WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, and McHenry Counties. * WHEN...From 10 AM to 10 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ006-012-013-019>021-023-032-033-039-106>108-230515- /O.UPG.KLOT.XH.A.0002.250723T1500Z-250725T0300Z/ /O.EXB.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will- Including the cities of Buffalo Grove, Waukegan, Joliet, Bourbonnais, Dwight, Marseilles, Crete, Kankakee, Gurnee, Ottawa, Naperville, Oswego, Minooka, Aurora, Lombard, Plainfield, Bradley, Fairbury, Elgin, Gilman, Paxton, Plano, Bolingbrook, Yorkville, Coal City, Carol Stream, Channahon, Downers Grove, Manhattan, Streator, Wheaton, La Salle, Mendota, Mundelein, Peotone, Gibson City, Morris, Pontiac, Beecher, Mokena, Watseka, and Wilmington 209 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY IN EFFECT FROM 10 AM WEDNESDAY TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...From 10 AM Wednesday to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-230515- /O.UPG.KLOT.XH.A.0002.250723T1500Z-250725T0300Z/ /O.EXB.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Park Forest, Oak Forest, Oak Lawn, Lemont, Cicero, La Grange, Orland Park, Schaumburg, Oak Park, Calumet City, Des Plaines, Northbrook, Chicago, Palatine, and Evanston 209 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY IN EFFECT FROM 10 AM WEDNESDAY TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 107 expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...From 10 AM Wednesday to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...It will stifling in the city of Chicago, even at night. Heat indices will remain in the 90s through the evening hours Wednesday, only falling below 90 degrees for a few hours late Wednesday night into early Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Residents of the city of Chicago can call 3 1 1 to access city services, including seeking well being checks and for the location of the nearest cooling center. && $$ INZ001-002-010-011-019-230515- /O.EXT.KLOT.HT.Y.0002.250723T1800Z-250725T0300Z/ Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Rensselaer, Fowler, Oxford, Roselawn, Chesterton, Valparaiso, Kentland, Hammond, Merrillville, Morocco, DeMotte, Gary, and Portage 209 PM CDT Tue Jul 22 2025 /309 PM EDT Tue Jul 22 2025/ ...HEAT ADVISORY NOW IN EFFECT FROM 1 PM CDT WEDNESDAY TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 105 expected. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...From 1 PM CDT Wednesday to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ - Izzi Action: Continued Issued At: 2025-07-22 20:53:31 084 WWUS73 KLOT 230153 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 853 PM CDT Tue Jul 22 2025 ILZ003>005-008-010-011-231200- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of Crystal Lake, Woodstock, Rochelle, DeKalb, Oregon, Rockford, McHenry, Algonquin, Belvidere, Byron, Sycamore, and Dixon 853 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM TO 10 PM CDT WEDNESDAY... * WHAT...Peak afternoon heat index values of 100 to 108 expected. * WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, and McHenry Counties. * WHEN...From 10 AM to 10 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ006-012-013-019>021-023-032-033-039-106>108-231200- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will- Including the cities of Naperville, Joliet, Carol Stream, Streator, Peotone, Plano, Bradley, Lombard, Plainfield, Manhattan, Wheaton, Gilman, Bourbonnais, Marseilles, Buffalo Grove, Oswego, Beecher, Pontiac, Watseka, Bolingbrook, Minooka, Coal City, Aurora, Mundelein, Gurnee, Crete, Dwight, Fairbury, Morris, Kankakee, Downers Grove, Mendota, Yorkville, Channahon, Gibson City, Elgin, Mokena, Wilmington, Waukegan, Paxton, La Salle, and Ottawa 853 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM WEDNESDAY TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...From 10 AM Wednesday to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-231200- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of La Grange, Schaumburg, Oak Forest, Palatine, Cicero, Calumet City, Oak Lawn, Lemont, Northbrook, Park Forest, Oak Park, Orland Park, Evanston, Des Plaines, and Chicago 853 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM WEDNESDAY TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 107 expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...From 10 AM Wednesday to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...It will stifling in the city of Chicago, even at night. Heat indices will remain in the 90s through the evening hours Wednesday, only falling below 90 degrees for a few hours late Wednesday night into early Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Residents of the city of Chicago can call 3 1 1 to access city services, including seeking well being checks and for the location of the nearest cooling center. && $$ INZ001-002-010-011-019-231200- /O.CON.KLOT.HT.Y.0002.250723T1800Z-250725T0300Z/ Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Merrillville, Oxford, Valparaiso, Hammond, Morocco, DeMotte, Roselawn, Rensselaer, Fowler, Portage, Chesterton, Kentland, and Gary 853 PM CDT Tue Jul 22 2025 /953 PM EDT Tue Jul 22 2025/ ...HEAT ADVISORY REMAINS IN EFFECT FROM 1 PM CDT /2 PM EDT/ WEDNESDAY TO 10 PM CDT /11 PM EDT/ THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 105 expected. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...From 1 PM CDT /2 PM EDT/ Wednesday to 10 PM CDT /11 PM EDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Yack Action: Continued Issued At: 2025-07-22 20:53:31 084 WWUS73 KLOT 230153 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 853 PM CDT Tue Jul 22 2025 ILZ003>005-008-010-011-231200- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of Crystal Lake, Woodstock, Rochelle, DeKalb, Oregon, Rockford, McHenry, Algonquin, Belvidere, Byron, Sycamore, and Dixon 853 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM TO 10 PM CDT WEDNESDAY... * WHAT...Peak afternoon heat index values of 100 to 108 expected. * WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, and McHenry Counties. * WHEN...From 10 AM to 10 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ006-012-013-019>021-023-032-033-039-106>108-231200- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will- Including the cities of Naperville, Joliet, Carol Stream, Streator, Peotone, Plano, Bradley, Lombard, Plainfield, Manhattan, Wheaton, Gilman, Bourbonnais, Marseilles, Buffalo Grove, Oswego, Beecher, Pontiac, Watseka, Bolingbrook, Minooka, Coal City, Aurora, Mundelein, Gurnee, Crete, Dwight, Fairbury, Morris, Kankakee, Downers Grove, Mendota, Yorkville, Channahon, Gibson City, Elgin, Mokena, Wilmington, Waukegan, Paxton, La Salle, and Ottawa 853 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM WEDNESDAY TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...From 10 AM Wednesday to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-231200- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of La Grange, Schaumburg, Oak Forest, Palatine, Cicero, Calumet City, Oak Lawn, Lemont, Northbrook, Park Forest, Oak Park, Orland Park, Evanston, Des Plaines, and Chicago 853 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM WEDNESDAY TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 107 expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...From 10 AM Wednesday to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...It will stifling in the city of Chicago, even at night. Heat indices will remain in the 90s through the evening hours Wednesday, only falling below 90 degrees for a few hours late Wednesday night into early Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Residents of the city of Chicago can call 3 1 1 to access city services, including seeking well being checks and for the location of the nearest cooling center. && $$ INZ001-002-010-011-019-231200- /O.CON.KLOT.HT.Y.0002.250723T1800Z-250725T0300Z/ Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Merrillville, Oxford, Valparaiso, Hammond, Morocco, DeMotte, Roselawn, Rensselaer, Fowler, Portage, Chesterton, Kentland, and Gary 853 PM CDT Tue Jul 22 2025 /953 PM EDT Tue Jul 22 2025/ ...HEAT ADVISORY REMAINS IN EFFECT FROM 1 PM CDT /2 PM EDT/ WEDNESDAY TO 10 PM CDT /11 PM EDT/ THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 105 expected. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...From 1 PM CDT /2 PM EDT/ Wednesday to 10 PM CDT /11 PM EDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Yack Action: Continued Issued At: 2025-07-22 20:53:31 084 WWUS73 KLOT 230153 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 853 PM CDT Tue Jul 22 2025 ILZ003>005-008-010-011-231200- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of Crystal Lake, Woodstock, Rochelle, DeKalb, Oregon, Rockford, McHenry, Algonquin, Belvidere, Byron, Sycamore, and Dixon 853 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM TO 10 PM CDT WEDNESDAY... * WHAT...Peak afternoon heat index values of 100 to 108 expected. * WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, and McHenry Counties. * WHEN...From 10 AM to 10 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ006-012-013-019>021-023-032-033-039-106>108-231200- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will- Including the cities of Naperville, Joliet, Carol Stream, Streator, Peotone, Plano, Bradley, Lombard, Plainfield, Manhattan, Wheaton, Gilman, Bourbonnais, Marseilles, Buffalo Grove, Oswego, Beecher, Pontiac, Watseka, Bolingbrook, Minooka, Coal City, Aurora, Mundelein, Gurnee, Crete, Dwight, Fairbury, Morris, Kankakee, Downers Grove, Mendota, Yorkville, Channahon, Gibson City, Elgin, Mokena, Wilmington, Waukegan, Paxton, La Salle, and Ottawa 853 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM WEDNESDAY TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...From 10 AM Wednesday to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-231200- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of La Grange, Schaumburg, Oak Forest, Palatine, Cicero, Calumet City, Oak Lawn, Lemont, Northbrook, Park Forest, Oak Park, Orland Park, Evanston, Des Plaines, and Chicago 853 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM WEDNESDAY TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 107 expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...From 10 AM Wednesday to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...It will stifling in the city of Chicago, even at night. Heat indices will remain in the 90s through the evening hours Wednesday, only falling below 90 degrees for a few hours late Wednesday night into early Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Residents of the city of Chicago can call 3 1 1 to access city services, including seeking well being checks and for the location of the nearest cooling center. && $$ INZ001-002-010-011-019-231200- /O.CON.KLOT.HT.Y.0002.250723T1800Z-250725T0300Z/ Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Merrillville, Oxford, Valparaiso, Hammond, Morocco, DeMotte, Roselawn, Rensselaer, Fowler, Portage, Chesterton, Kentland, and Gary 853 PM CDT Tue Jul 22 2025 /953 PM EDT Tue Jul 22 2025/ ...HEAT ADVISORY REMAINS IN EFFECT FROM 1 PM CDT /2 PM EDT/ WEDNESDAY TO 10 PM CDT /11 PM EDT/ THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 105 expected. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...From 1 PM CDT /2 PM EDT/ Wednesday to 10 PM CDT /11 PM EDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Yack Action: Continued Issued At: 2025-07-22 20:53:31 084 WWUS73 KLOT 230153 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 853 PM CDT Tue Jul 22 2025 ILZ003>005-008-010-011-231200- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of Crystal Lake, Woodstock, Rochelle, DeKalb, Oregon, Rockford, McHenry, Algonquin, Belvidere, Byron, Sycamore, and Dixon 853 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM TO 10 PM CDT WEDNESDAY... * WHAT...Peak afternoon heat index values of 100 to 108 expected. * WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, and McHenry Counties. * WHEN...From 10 AM to 10 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ006-012-013-019>021-023-032-033-039-106>108-231200- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will- Including the cities of Naperville, Joliet, Carol Stream, Streator, Peotone, Plano, Bradley, Lombard, Plainfield, Manhattan, Wheaton, Gilman, Bourbonnais, Marseilles, Buffalo Grove, Oswego, Beecher, Pontiac, Watseka, Bolingbrook, Minooka, Coal City, Aurora, Mundelein, Gurnee, Crete, Dwight, Fairbury, Morris, Kankakee, Downers Grove, Mendota, Yorkville, Channahon, Gibson City, Elgin, Mokena, Wilmington, Waukegan, Paxton, La Salle, and Ottawa 853 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM WEDNESDAY TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...From 10 AM Wednesday to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-231200- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of La Grange, Schaumburg, Oak Forest, Palatine, Cicero, Calumet City, Oak Lawn, Lemont, Northbrook, Park Forest, Oak Park, Orland Park, Evanston, Des Plaines, and Chicago 853 PM CDT Tue Jul 22 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM WEDNESDAY TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 107 expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...From 10 AM Wednesday to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...It will stifling in the city of Chicago, even at night. Heat indices will remain in the 90s through the evening hours Wednesday, only falling below 90 degrees for a few hours late Wednesday night into early Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Residents of the city of Chicago can call 3 1 1 to access city services, including seeking well being checks and for the location of the nearest cooling center. && $$ INZ001-002-010-011-019-231200- /O.CON.KLOT.HT.Y.0002.250723T1800Z-250725T0300Z/ Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Merrillville, Oxford, Valparaiso, Hammond, Morocco, DeMotte, Roselawn, Rensselaer, Fowler, Portage, Chesterton, Kentland, and Gary 853 PM CDT Tue Jul 22 2025 /953 PM EDT Tue Jul 22 2025/ ...HEAT ADVISORY REMAINS IN EFFECT FROM 1 PM CDT /2 PM EDT/ WEDNESDAY TO 10 PM CDT /11 PM EDT/ THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 105 expected. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...From 1 PM CDT /2 PM EDT/ Wednesday to 10 PM CDT /11 PM EDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Yack Action: Continued Issued At: 2025-07-23 03:46:43 057 WWUS73 KLOT 230846 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 346 AM CDT Wed Jul 23 2025 ILZ003>005-008-010-011-231900- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of Algonquin, Rockford, Belvidere, Sycamore, Woodstock, Crystal Lake, McHenry, Dixon, Byron, DeKalb, Rochelle, and Oregon 346 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 10 PM CDT THIS EVENING... * WHAT...Peak afternoon heat index values of 105 to 108 expected. * WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, and McHenry Counties. * WHEN...From 10 AM this morning to 10 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ006-012-013-019>021-023-032-033-039-106>108-231900- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will- Including the cities of Aurora, Oswego, Plano, Morris, Watseka, Peotone, Bolingbrook, Wheaton, Channahon, Bourbonnais, Mokena, Plainfield, Gibson City, Mundelein, Carol Stream, Elgin, Minooka, Manhattan, Waukegan, Coal City, Beecher, Kankakee, Marseilles, Mendota, Ottawa, Wilmington, Downers Grove, Yorkville, Streator, Lombard, Fairbury, Naperville, Gurnee, Pontiac, Buffalo Grove, Joliet, Paxton, La Salle, Bradley, Dwight, Crete, and Gilman 346 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...From 10 AM this morning to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-231900- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of La Grange, Park Forest, Chicago, Lemont, Oak Park, Des Plaines, Calumet City, Oak Forest, Orland Park, Palatine, Evanston, Cicero, Northbrook, Oak Lawn, and Schaumburg 346 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 107 expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...From 10 AM this morning to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...It will be stifling in the city of Chicago, even at night. Heat indices will remain in the 90s through the evening hours, only falling below 90 degrees for a few hours late tonight into early Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ INZ001-002-010-011-019-231900- /O.CON.KLOT.HT.Y.0002.250723T1800Z-250725T0300Z/ Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Valparaiso, Roselawn, Rensselaer, Kentland, Morocco, Gary, Merrillville, Portage, DeMotte, Chesterton, Hammond, Oxford, and Fowler 346 AM CDT Wed Jul 23 2025 /446 AM EDT Wed Jul 23 2025/ ...HEAT ADVISORY REMAINS IN EFFECT FROM 1 PM CDT /2 PM EDT/ THIS AFTERNOON TO 10 PM CDT /11 PM EDT/ THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 107 expected. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...From 1 PM CDT /2 PM EDT/ this afternoon to 10 PM CDT /11 PM EDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Birk Action: Continued Issued At: 2025-07-23 03:46:43 057 WWUS73 KLOT 230846 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 346 AM CDT Wed Jul 23 2025 ILZ003>005-008-010-011-231900- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of Algonquin, Rockford, Belvidere, Sycamore, Woodstock, Crystal Lake, McHenry, Dixon, Byron, DeKalb, Rochelle, and Oregon 346 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 10 PM CDT THIS EVENING... * WHAT...Peak afternoon heat index values of 105 to 108 expected. * WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, and McHenry Counties. * WHEN...From 10 AM this morning to 10 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ006-012-013-019>021-023-032-033-039-106>108-231900- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will- Including the cities of Aurora, Oswego, Plano, Morris, Watseka, Peotone, Bolingbrook, Wheaton, Channahon, Bourbonnais, Mokena, Plainfield, Gibson City, Mundelein, Carol Stream, Elgin, Minooka, Manhattan, Waukegan, Coal City, Beecher, Kankakee, Marseilles, Mendota, Ottawa, Wilmington, Downers Grove, Yorkville, Streator, Lombard, Fairbury, Naperville, Gurnee, Pontiac, Buffalo Grove, Joliet, Paxton, La Salle, Bradley, Dwight, Crete, and Gilman 346 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...From 10 AM this morning to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-231900- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of La Grange, Park Forest, Chicago, Lemont, Oak Park, Des Plaines, Calumet City, Oak Forest, Orland Park, Palatine, Evanston, Cicero, Northbrook, Oak Lawn, and Schaumburg 346 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 107 expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...From 10 AM this morning to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...It will be stifling in the city of Chicago, even at night. Heat indices will remain in the 90s through the evening hours, only falling below 90 degrees for a few hours late tonight into early Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ INZ001-002-010-011-019-231900- /O.CON.KLOT.HT.Y.0002.250723T1800Z-250725T0300Z/ Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Valparaiso, Roselawn, Rensselaer, Kentland, Morocco, Gary, Merrillville, Portage, DeMotte, Chesterton, Hammond, Oxford, and Fowler 346 AM CDT Wed Jul 23 2025 /446 AM EDT Wed Jul 23 2025/ ...HEAT ADVISORY REMAINS IN EFFECT FROM 1 PM CDT /2 PM EDT/ THIS AFTERNOON TO 10 PM CDT /11 PM EDT/ THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 107 expected. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...From 1 PM CDT /2 PM EDT/ this afternoon to 10 PM CDT /11 PM EDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Birk Action: Continued Issued At: 2025-07-23 03:46:43 057 WWUS73 KLOT 230846 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 346 AM CDT Wed Jul 23 2025 ILZ003>005-008-010-011-231900- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of Algonquin, Rockford, Belvidere, Sycamore, Woodstock, Crystal Lake, McHenry, Dixon, Byron, DeKalb, Rochelle, and Oregon 346 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 10 PM CDT THIS EVENING... * WHAT...Peak afternoon heat index values of 105 to 108 expected. * WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, and McHenry Counties. * WHEN...From 10 AM this morning to 10 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ006-012-013-019>021-023-032-033-039-106>108-231900- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will- Including the cities of Aurora, Oswego, Plano, Morris, Watseka, Peotone, Bolingbrook, Wheaton, Channahon, Bourbonnais, Mokena, Plainfield, Gibson City, Mundelein, Carol Stream, Elgin, Minooka, Manhattan, Waukegan, Coal City, Beecher, Kankakee, Marseilles, Mendota, Ottawa, Wilmington, Downers Grove, Yorkville, Streator, Lombard, Fairbury, Naperville, Gurnee, Pontiac, Buffalo Grove, Joliet, Paxton, La Salle, Bradley, Dwight, Crete, and Gilman 346 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...From 10 AM this morning to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-231900- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of La Grange, Park Forest, Chicago, Lemont, Oak Park, Des Plaines, Calumet City, Oak Forest, Orland Park, Palatine, Evanston, Cicero, Northbrook, Oak Lawn, and Schaumburg 346 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 107 expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...From 10 AM this morning to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...It will be stifling in the city of Chicago, even at night. Heat indices will remain in the 90s through the evening hours, only falling below 90 degrees for a few hours late tonight into early Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ INZ001-002-010-011-019-231900- /O.CON.KLOT.HT.Y.0002.250723T1800Z-250725T0300Z/ Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Valparaiso, Roselawn, Rensselaer, Kentland, Morocco, Gary, Merrillville, Portage, DeMotte, Chesterton, Hammond, Oxford, and Fowler 346 AM CDT Wed Jul 23 2025 /446 AM EDT Wed Jul 23 2025/ ...HEAT ADVISORY REMAINS IN EFFECT FROM 1 PM CDT /2 PM EDT/ THIS AFTERNOON TO 10 PM CDT /11 PM EDT/ THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 107 expected. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...From 1 PM CDT /2 PM EDT/ this afternoon to 10 PM CDT /11 PM EDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Birk Action: Continued Issued At: 2025-07-23 03:46:43 057 WWUS73 KLOT 230846 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 346 AM CDT Wed Jul 23 2025 ILZ003>005-008-010-011-231900- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of Algonquin, Rockford, Belvidere, Sycamore, Woodstock, Crystal Lake, McHenry, Dixon, Byron, DeKalb, Rochelle, and Oregon 346 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 10 PM CDT THIS EVENING... * WHAT...Peak afternoon heat index values of 105 to 108 expected. * WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, and McHenry Counties. * WHEN...From 10 AM this morning to 10 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ006-012-013-019>021-023-032-033-039-106>108-231900- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will- Including the cities of Aurora, Oswego, Plano, Morris, Watseka, Peotone, Bolingbrook, Wheaton, Channahon, Bourbonnais, Mokena, Plainfield, Gibson City, Mundelein, Carol Stream, Elgin, Minooka, Manhattan, Waukegan, Coal City, Beecher, Kankakee, Marseilles, Mendota, Ottawa, Wilmington, Downers Grove, Yorkville, Streator, Lombard, Fairbury, Naperville, Gurnee, Pontiac, Buffalo Grove, Joliet, Paxton, La Salle, Bradley, Dwight, Crete, and Gilman 346 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...From 10 AM this morning to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-231900- /O.CON.KLOT.HT.Y.0002.250723T1500Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of La Grange, Park Forest, Chicago, Lemont, Oak Park, Des Plaines, Calumet City, Oak Forest, Orland Park, Palatine, Evanston, Cicero, Northbrook, Oak Lawn, and Schaumburg 346 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 107 expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...From 10 AM this morning to 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...It will be stifling in the city of Chicago, even at night. Heat indices will remain in the 90s through the evening hours, only falling below 90 degrees for a few hours late tonight into early Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ INZ001-002-010-011-019-231900- /O.CON.KLOT.HT.Y.0002.250723T1800Z-250725T0300Z/ Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Valparaiso, Roselawn, Rensselaer, Kentland, Morocco, Gary, Merrillville, Portage, DeMotte, Chesterton, Hammond, Oxford, and Fowler 346 AM CDT Wed Jul 23 2025 /446 AM EDT Wed Jul 23 2025/ ...HEAT ADVISORY REMAINS IN EFFECT FROM 1 PM CDT /2 PM EDT/ THIS AFTERNOON TO 10 PM CDT /11 PM EDT/ THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 107 expected. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...From 1 PM CDT /2 PM EDT/ this afternoon to 10 PM CDT /11 PM EDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Birk Action: Continued Issued At: 2025-07-23 10:32:27 448 WWUS73 KLOT 231531 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 1031 AM CDT Wed Jul 23 2025 ILZ003>005-008-010-011-240145- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of Rockford, DeKalb, Woodstock, Sycamore, Crystal Lake, McHenry, Byron, Algonquin, Oregon, Rochelle, Dixon, and Belvidere 1031 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...Peak afternoon heat index values of 105 to 108 expected. * WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, and McHenry Counties. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ006-012-013-019>021-023-032-033-039-106>108-240145- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will- Including the cities of Mendota, Coal City, Beecher, Fairbury, Ottawa, Wilmington, Mundelein, Lombard, Plano, Minooka, Manhattan, La Salle, Carol Stream, Streator, Marseilles, Plainfield, Wheaton, Channahon, Bourbonnais, Naperville, Aurora, Morris, Paxton, Downers Grove, Joliet, Dwight, Bradley, Elgin, Gibson City, Oswego, Buffalo Grove, Waukegan, Watseka, Kankakee, Gurnee, Crete, Mokena, Gilman, Pontiac, Peotone, Yorkville, and Bolingbrook 1031 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...Until 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-240145- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Evanston, Northbrook, La Grange, Calumet City, Park Forest, Cicero, Des Plaines, Schaumburg, Oak Lawn, Oak Park, Chicago, Orland Park, Palatine, Oak Forest, and Lemont 1031 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 108 expected. * WHERE...Cook County. * WHEN...Until 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...It will be stifling in the city of Chicago, even at night. Heat indices will remain in the 90s through the evening hours, only falling below 90 degrees for a few hours late tonight into early Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Residents of the city of Chicago can call 3 1 1 to access city services, including seeking well being checks and for the location of the nearest cooling center. && $$ INZ001-002-010-011-019-240145- /O.CON.KLOT.HT.Y.0002.250723T1800Z-250725T0300Z/ Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Rensselaer, Valparaiso, Kentland, Fowler, DeMotte, Merrillville, Morocco, Gary, Oxford, Chesterton, Portage, Roselawn, and Hammond 1031 AM CDT Wed Jul 23 2025 /1131 AM EDT Wed Jul 23 2025/ ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT /11 PM EDT/ THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 110 expected. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...Until 10 PM CDT /11 PM EDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Ogorek Action: Continued Issued At: 2025-07-23 10:32:27 448 WWUS73 KLOT 231531 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 1031 AM CDT Wed Jul 23 2025 ILZ003>005-008-010-011-240145- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of Rockford, DeKalb, Woodstock, Sycamore, Crystal Lake, McHenry, Byron, Algonquin, Oregon, Rochelle, Dixon, and Belvidere 1031 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...Peak afternoon heat index values of 105 to 108 expected. * WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, and McHenry Counties. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ006-012-013-019>021-023-032-033-039-106>108-240145- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will- Including the cities of Mendota, Coal City, Beecher, Fairbury, Ottawa, Wilmington, Mundelein, Lombard, Plano, Minooka, Manhattan, La Salle, Carol Stream, Streator, Marseilles, Plainfield, Wheaton, Channahon, Bourbonnais, Naperville, Aurora, Morris, Paxton, Downers Grove, Joliet, Dwight, Bradley, Elgin, Gibson City, Oswego, Buffalo Grove, Waukegan, Watseka, Kankakee, Gurnee, Crete, Mokena, Gilman, Pontiac, Peotone, Yorkville, and Bolingbrook 1031 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...Until 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-240145- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Evanston, Northbrook, La Grange, Calumet City, Park Forest, Cicero, Des Plaines, Schaumburg, Oak Lawn, Oak Park, Chicago, Orland Park, Palatine, Oak Forest, and Lemont 1031 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 108 expected. * WHERE...Cook County. * WHEN...Until 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...It will be stifling in the city of Chicago, even at night. Heat indices will remain in the 90s through the evening hours, only falling below 90 degrees for a few hours late tonight into early Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Residents of the city of Chicago can call 3 1 1 to access city services, including seeking well being checks and for the location of the nearest cooling center. && $$ INZ001-002-010-011-019-240145- /O.CON.KLOT.HT.Y.0002.250723T1800Z-250725T0300Z/ Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Rensselaer, Valparaiso, Kentland, Fowler, DeMotte, Merrillville, Morocco, Gary, Oxford, Chesterton, Portage, Roselawn, and Hammond 1031 AM CDT Wed Jul 23 2025 /1131 AM EDT Wed Jul 23 2025/ ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT /11 PM EDT/ THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 110 expected. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...Until 10 PM CDT /11 PM EDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Ogorek Action: Continued Issued At: 2025-07-23 10:32:27 448 WWUS73 KLOT 231531 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 1031 AM CDT Wed Jul 23 2025 ILZ003>005-008-010-011-240145- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of Rockford, DeKalb, Woodstock, Sycamore, Crystal Lake, McHenry, Byron, Algonquin, Oregon, Rochelle, Dixon, and Belvidere 1031 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...Peak afternoon heat index values of 105 to 108 expected. * WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, and McHenry Counties. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ006-012-013-019>021-023-032-033-039-106>108-240145- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will- Including the cities of Mendota, Coal City, Beecher, Fairbury, Ottawa, Wilmington, Mundelein, Lombard, Plano, Minooka, Manhattan, La Salle, Carol Stream, Streator, Marseilles, Plainfield, Wheaton, Channahon, Bourbonnais, Naperville, Aurora, Morris, Paxton, Downers Grove, Joliet, Dwight, Bradley, Elgin, Gibson City, Oswego, Buffalo Grove, Waukegan, Watseka, Kankakee, Gurnee, Crete, Mokena, Gilman, Pontiac, Peotone, Yorkville, and Bolingbrook 1031 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...Until 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-240145- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Evanston, Northbrook, La Grange, Calumet City, Park Forest, Cicero, Des Plaines, Schaumburg, Oak Lawn, Oak Park, Chicago, Orland Park, Palatine, Oak Forest, and Lemont 1031 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 108 expected. * WHERE...Cook County. * WHEN...Until 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...It will be stifling in the city of Chicago, even at night. Heat indices will remain in the 90s through the evening hours, only falling below 90 degrees for a few hours late tonight into early Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Residents of the city of Chicago can call 3 1 1 to access city services, including seeking well being checks and for the location of the nearest cooling center. && $$ INZ001-002-010-011-019-240145- /O.CON.KLOT.HT.Y.0002.250723T1800Z-250725T0300Z/ Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Rensselaer, Valparaiso, Kentland, Fowler, DeMotte, Merrillville, Morocco, Gary, Oxford, Chesterton, Portage, Roselawn, and Hammond 1031 AM CDT Wed Jul 23 2025 /1131 AM EDT Wed Jul 23 2025/ ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT /11 PM EDT/ THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 110 expected. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...Until 10 PM CDT /11 PM EDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Ogorek Action: Continued Issued At: 2025-07-23 10:32:27 448 WWUS73 KLOT 231531 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 1031 AM CDT Wed Jul 23 2025 ILZ003>005-008-010-011-240145- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of Rockford, DeKalb, Woodstock, Sycamore, Crystal Lake, McHenry, Byron, Algonquin, Oregon, Rochelle, Dixon, and Belvidere 1031 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...Peak afternoon heat index values of 105 to 108 expected. * WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, and McHenry Counties. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ006-012-013-019>021-023-032-033-039-106>108-240145- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will- Including the cities of Mendota, Coal City, Beecher, Fairbury, Ottawa, Wilmington, Mundelein, Lombard, Plano, Minooka, Manhattan, La Salle, Carol Stream, Streator, Marseilles, Plainfield, Wheaton, Channahon, Bourbonnais, Naperville, Aurora, Morris, Paxton, Downers Grove, Joliet, Dwight, Bradley, Elgin, Gibson City, Oswego, Buffalo Grove, Waukegan, Watseka, Kankakee, Gurnee, Crete, Mokena, Gilman, Pontiac, Peotone, Yorkville, and Bolingbrook 1031 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...Until 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-240145- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Evanston, Northbrook, La Grange, Calumet City, Park Forest, Cicero, Des Plaines, Schaumburg, Oak Lawn, Oak Park, Chicago, Orland Park, Palatine, Oak Forest, and Lemont 1031 AM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 108 expected. * WHERE...Cook County. * WHEN...Until 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...It will be stifling in the city of Chicago, even at night. Heat indices will remain in the 90s through the evening hours, only falling below 90 degrees for a few hours late tonight into early Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Residents of the city of Chicago can call 3 1 1 to access city services, including seeking well being checks and for the location of the nearest cooling center. && $$ INZ001-002-010-011-019-240145- /O.CON.KLOT.HT.Y.0002.250723T1800Z-250725T0300Z/ Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Rensselaer, Valparaiso, Kentland, Fowler, DeMotte, Merrillville, Morocco, Gary, Oxford, Chesterton, Portage, Roselawn, and Hammond 1031 AM CDT Wed Jul 23 2025 /1131 AM EDT Wed Jul 23 2025/ ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT /11 PM EDT/ THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 110 expected. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...Until 10 PM CDT /11 PM EDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Ogorek Action: Continued Issued At: 2025-07-23 15:35:34 511 WWUS73 KLOT 232035 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 335 PM CDT Wed Jul 23 2025 ILZ003>005-008-010-011-240300- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of McHenry, Dixon, Oregon, Rockford, DeKalb, Belvidere, Byron, Algonquin, Crystal Lake, Woodstock, Sycamore, and Rochelle 335 PM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...Heat index values of 105 to 110 occurring. * WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, and McHenry Counties. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ006-012-013-019>021-023-032-033-039-106>108-INZ001-002-010-011- 019-240645- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will-Lake IN- Porter-Newton-Jasper-Benton- Including the cities of Buffalo Grove, Naperville, Wheaton, Elgin, Crete, Aurora, Bradley, Marseilles, Gibson City, Oswego, Manhattan, Chesterton, Morris, Pontiac, Mendota, Portage, Valparaiso, Minooka, Oxford, Mundelein, Wilmington, Fowler, Paxton, Gary, Waukegan, Peotone, Streator, Yorkville, Joliet, Channahon, Rensselaer, Lombard, Gurnee, Fairbury, Ottawa, Plano, DeMotte, Kankakee, Bolingbrook, Merrillville, Carol Stream, Morocco, Watseka, Coal City, Kentland, Roselawn, Dwight, Plainfield, Gilman, Beecher, Mokena, Hammond, Downers Grove, Bourbonnais, and La Salle 335 PM CDT Wed Jul 23 2025 /435 PM EDT Wed Jul 23 2025/ ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT /11 PM EDT/ THURSDAY... * WHAT...Peak afternoon heat index values of 105 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...Until 10 PM CDT /11 PM EDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-240645- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Palatine, Des Plaines, Orland Park, Schaumburg, Chicago, Oak Park, Lemont, Park Forest, La Grange, Calumet City, Oak Forest, Evanston, Cicero, Oak Lawn, and Northbrook 335 PM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 105 expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...Until 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Heat indices will remain in the 90s through the evening hours, only falling below 90 degrees for a few hours late tonight into early Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Residents of the city of Chicago can call 3 1 1 to access city services, including seeking well being checks and for the location of the nearest cooling center. && $$ Doom Action: Continued Issued At: 2025-07-23 15:35:34 511 WWUS73 KLOT 232035 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 335 PM CDT Wed Jul 23 2025 ILZ003>005-008-010-011-240300- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of McHenry, Dixon, Oregon, Rockford, DeKalb, Belvidere, Byron, Algonquin, Crystal Lake, Woodstock, Sycamore, and Rochelle 335 PM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...Heat index values of 105 to 110 occurring. * WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, and McHenry Counties. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ006-012-013-019>021-023-032-033-039-106>108-INZ001-002-010-011- 019-240645- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will-Lake IN- Porter-Newton-Jasper-Benton- Including the cities of Buffalo Grove, Naperville, Wheaton, Elgin, Crete, Aurora, Bradley, Marseilles, Gibson City, Oswego, Manhattan, Chesterton, Morris, Pontiac, Mendota, Portage, Valparaiso, Minooka, Oxford, Mundelein, Wilmington, Fowler, Paxton, Gary, Waukegan, Peotone, Streator, Yorkville, Joliet, Channahon, Rensselaer, Lombard, Gurnee, Fairbury, Ottawa, Plano, DeMotte, Kankakee, Bolingbrook, Merrillville, Carol Stream, Morocco, Watseka, Coal City, Kentland, Roselawn, Dwight, Plainfield, Gilman, Beecher, Mokena, Hammond, Downers Grove, Bourbonnais, and La Salle 335 PM CDT Wed Jul 23 2025 /435 PM EDT Wed Jul 23 2025/ ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT /11 PM EDT/ THURSDAY... * WHAT...Peak afternoon heat index values of 105 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...Until 10 PM CDT /11 PM EDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-240645- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Palatine, Des Plaines, Orland Park, Schaumburg, Chicago, Oak Park, Lemont, Park Forest, La Grange, Calumet City, Oak Forest, Evanston, Cicero, Oak Lawn, and Northbrook 335 PM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 105 expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...Until 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Heat indices will remain in the 90s through the evening hours, only falling below 90 degrees for a few hours late tonight into early Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Residents of the city of Chicago can call 3 1 1 to access city services, including seeking well being checks and for the location of the nearest cooling center. && $$ Doom Action: Continued Issued At: 2025-07-23 15:35:34 511 WWUS73 KLOT 232035 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 335 PM CDT Wed Jul 23 2025 ILZ003>005-008-010-011-240300- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of McHenry, Dixon, Oregon, Rockford, DeKalb, Belvidere, Byron, Algonquin, Crystal Lake, Woodstock, Sycamore, and Rochelle 335 PM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...Heat index values of 105 to 110 occurring. * WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, and McHenry Counties. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ006-012-013-019>021-023-032-033-039-106>108-INZ001-002-010-011- 019-240645- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will-Lake IN- Porter-Newton-Jasper-Benton- Including the cities of Buffalo Grove, Naperville, Wheaton, Elgin, Crete, Aurora, Bradley, Marseilles, Gibson City, Oswego, Manhattan, Chesterton, Morris, Pontiac, Mendota, Portage, Valparaiso, Minooka, Oxford, Mundelein, Wilmington, Fowler, Paxton, Gary, Waukegan, Peotone, Streator, Yorkville, Joliet, Channahon, Rensselaer, Lombard, Gurnee, Fairbury, Ottawa, Plano, DeMotte, Kankakee, Bolingbrook, Merrillville, Carol Stream, Morocco, Watseka, Coal City, Kentland, Roselawn, Dwight, Plainfield, Gilman, Beecher, Mokena, Hammond, Downers Grove, Bourbonnais, and La Salle 335 PM CDT Wed Jul 23 2025 /435 PM EDT Wed Jul 23 2025/ ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT /11 PM EDT/ THURSDAY... * WHAT...Peak afternoon heat index values of 105 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...Until 10 PM CDT /11 PM EDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-240645- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Palatine, Des Plaines, Orland Park, Schaumburg, Chicago, Oak Park, Lemont, Park Forest, La Grange, Calumet City, Oak Forest, Evanston, Cicero, Oak Lawn, and Northbrook 335 PM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 105 expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...Until 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Heat indices will remain in the 90s through the evening hours, only falling below 90 degrees for a few hours late tonight into early Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Residents of the city of Chicago can call 3 1 1 to access city services, including seeking well being checks and for the location of the nearest cooling center. && $$ Doom Action: Continued Issued At: 2025-07-23 22:04:47 458 WWUS73 KLOT 240304 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 1004 PM CDT Wed Jul 23 2025 ILZ003>005-008-010-011-240415- /O.EXP.KLOT.HT.Y.0002.000000T0000Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of DeKalb, Algonquin, Rockford, Belvidere, Rochelle, Oregon, Dixon, Crystal Lake, Woodstock, McHenry, Sycamore, and Byron 1004 PM CDT Wed Jul 23 2025 ...HEAT ADVISORY HAS EXPIRED... Warm and humid conditions will continue overnight through Thursday but are expected to remain below advisory criteria. Accordingly, the Heat Advisory has been allowed to expire. $$ ILZ006-012-013-019>021-023-032-033-039-106>108-INZ001-002-010-011- 019-241315- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will-Lake IN- Porter-Newton-Jasper-Benton- Including the cities of Wheaton, La Salle, Mundelein, Bolingbrook, Valparaiso, Downers Grove, Plano, Gurnee, Mendota, Gilman, Marseilles, Mokena, Morocco, Yorkville, Gibson City, Naperville, Manhattan, Minooka, Pontiac, DeMotte, Bourbonnais, Streator, Portage, Dwight, Beecher, Fowler, Kentland, Kankakee, Crete, Oxford, Morris, Paxton, Bradley, Waukegan, Watseka, Carol Stream, Rensselaer, Merrillville, Fairbury, Oswego, Aurora, Plainfield, Channahon, Hammond, Joliet, Ottawa, Chesterton, Buffalo Grove, Roselawn, Peotone, Elgin, Wilmington, Gary, Lombard, and Coal City 1004 PM CDT Wed Jul 23 2025 /1104 PM EDT Wed Jul 23 2025/ ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT /11 PM EDT/ THURSDAY... * WHAT...Peak afternoon heat index values of 105 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...Until 10 PM CDT /11 PM EDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-241315- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Palatine, Chicago, Evanston, Park Forest, Oak Lawn, Orland Park, Cicero, Oak Forest, Des Plaines, Lemont, Oak Park, Northbrook, Schaumburg, Calumet City, and La Grange 1004 PM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 105 expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...Until 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Heat indices will remain in the 90s through much of the night, only falling below 90 degrees for a few hours prior to sunrise. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Residents of the city of Chicago can call 3 1 1 to access city services, including seeking well being checks and for the location of the nearest cooling center. && $$ Petr Action: Continued Issued At: 2025-07-23 22:04:47 458 WWUS73 KLOT 240304 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 1004 PM CDT Wed Jul 23 2025 ILZ003>005-008-010-011-240415- /O.EXP.KLOT.HT.Y.0002.000000T0000Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of DeKalb, Algonquin, Rockford, Belvidere, Rochelle, Oregon, Dixon, Crystal Lake, Woodstock, McHenry, Sycamore, and Byron 1004 PM CDT Wed Jul 23 2025 ...HEAT ADVISORY HAS EXPIRED... Warm and humid conditions will continue overnight through Thursday but are expected to remain below advisory criteria. Accordingly, the Heat Advisory has been allowed to expire. $$ ILZ006-012-013-019>021-023-032-033-039-106>108-INZ001-002-010-011- 019-241315- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will-Lake IN- Porter-Newton-Jasper-Benton- Including the cities of Wheaton, La Salle, Mundelein, Bolingbrook, Valparaiso, Downers Grove, Plano, Gurnee, Mendota, Gilman, Marseilles, Mokena, Morocco, Yorkville, Gibson City, Naperville, Manhattan, Minooka, Pontiac, DeMotte, Bourbonnais, Streator, Portage, Dwight, Beecher, Fowler, Kentland, Kankakee, Crete, Oxford, Morris, Paxton, Bradley, Waukegan, Watseka, Carol Stream, Rensselaer, Merrillville, Fairbury, Oswego, Aurora, Plainfield, Channahon, Hammond, Joliet, Ottawa, Chesterton, Buffalo Grove, Roselawn, Peotone, Elgin, Wilmington, Gary, Lombard, and Coal City 1004 PM CDT Wed Jul 23 2025 /1104 PM EDT Wed Jul 23 2025/ ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT /11 PM EDT/ THURSDAY... * WHAT...Peak afternoon heat index values of 105 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...Until 10 PM CDT /11 PM EDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-241315- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Palatine, Chicago, Evanston, Park Forest, Oak Lawn, Orland Park, Cicero, Oak Forest, Des Plaines, Lemont, Oak Park, Northbrook, Schaumburg, Calumet City, and La Grange 1004 PM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 105 expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...Until 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Heat indices will remain in the 90s through much of the night, only falling below 90 degrees for a few hours prior to sunrise. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Residents of the city of Chicago can call 3 1 1 to access city services, including seeking well being checks and for the location of the nearest cooling center. && $$ Petr Action: Expired Issued At: 2025-07-23 22:04:47 458 WWUS73 KLOT 240304 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 1004 PM CDT Wed Jul 23 2025 ILZ003>005-008-010-011-240415- /O.EXP.KLOT.HT.Y.0002.000000T0000Z-250724T0300Z/ Winnebago-Boone-McHenry-Ogle-Lee-De Kalb- Including the cities of DeKalb, Algonquin, Rockford, Belvidere, Rochelle, Oregon, Dixon, Crystal Lake, Woodstock, McHenry, Sycamore, and Byron 1004 PM CDT Wed Jul 23 2025 ...HEAT ADVISORY HAS EXPIRED... Warm and humid conditions will continue overnight through Thursday but are expected to remain below advisory criteria. Accordingly, the Heat Advisory has been allowed to expire. $$ ILZ006-012-013-019>021-023-032-033-039-106>108-INZ001-002-010-011- 019-241315- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will-Lake IN- Porter-Newton-Jasper-Benton- Including the cities of Wheaton, La Salle, Mundelein, Bolingbrook, Valparaiso, Downers Grove, Plano, Gurnee, Mendota, Gilman, Marseilles, Mokena, Morocco, Yorkville, Gibson City, Naperville, Manhattan, Minooka, Pontiac, DeMotte, Bourbonnais, Streator, Portage, Dwight, Beecher, Fowler, Kentland, Kankakee, Crete, Oxford, Morris, Paxton, Bradley, Waukegan, Watseka, Carol Stream, Rensselaer, Merrillville, Fairbury, Oswego, Aurora, Plainfield, Channahon, Hammond, Joliet, Ottawa, Chesterton, Buffalo Grove, Roselawn, Peotone, Elgin, Wilmington, Gary, Lombard, and Coal City 1004 PM CDT Wed Jul 23 2025 /1104 PM EDT Wed Jul 23 2025/ ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT /11 PM EDT/ THURSDAY... * WHAT...Peak afternoon heat index values of 105 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...Until 10 PM CDT /11 PM EDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-241315- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Palatine, Chicago, Evanston, Park Forest, Oak Lawn, Orland Park, Cicero, Oak Forest, Des Plaines, Lemont, Oak Park, Northbrook, Schaumburg, Calumet City, and La Grange 1004 PM CDT Wed Jul 23 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THURSDAY... * WHAT...Peak afternoon heat index values of 100 to 105 expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...Until 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Heat indices will remain in the 90s through much of the night, only falling below 90 degrees for a few hours prior to sunrise. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Residents of the city of Chicago can call 3 1 1 to access city services, including seeking well being checks and for the location of the nearest cooling center. && $$ Petr Action: Continued Issued At: 2025-07-24 04:15:28 553 WWUS73 KLOT 240915 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 415 AM CDT Thu Jul 24 2025 ILZ006-012-013-019>021-023-032-033-039-106>108-INZ001-002-010-011- 019-241915- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will-Lake IN- Porter-Newton-Jasper-Benton- Including the cities of Gibson City, Mendota, Beecher, Bradley, Carol Stream, Downers Grove, Plano, Elgin, Marseilles, Kentland, Rensselaer, Hammond, Gary, Aurora, Dwight, Fairbury, Watseka, Merrillville, Mundelein, Naperville, Coal City, Roselawn, Streator, Morris, Crete, Gilman, Bolingbrook, Joliet, Plainfield, Mokena, Manhattan, Valparaiso, Kankakee, Paxton, Oxford, Wheaton, Channahon, Peotone, DeMotte, Pontiac, Portage, Minooka, Buffalo Grove, Bourbonnais, Gurnee, Chesterton, Fowler, Ottawa, Lombard, Oswego, Morocco, Waukegan, Yorkville, La Salle, and Wilmington 415 AM CDT Thu Jul 24 2025 /515 AM EDT Thu Jul 24 2025/ ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT /11 PM EDT/ THIS EVENING... * WHAT...Peak afternoon heat index values of 105 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...Until 10 PM CDT /11 PM EDT/ this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-241915- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Orland Park, Cicero, Oak Park, Oak Forest, Chicago, Des Plaines, Lemont, Oak Lawn, Calumet City, Schaumburg, La Grange, Evanston, Park Forest, Palatine, and Northbrook 415 AM CDT Thu Jul 24 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...Peak afternoon heat index values of 100 to 105 expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Birk Action: Continued Issued At: 2025-07-24 04:15:28 553 WWUS73 KLOT 240915 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 415 AM CDT Thu Jul 24 2025 ILZ006-012-013-019>021-023-032-033-039-106>108-INZ001-002-010-011- 019-241915- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will-Lake IN- Porter-Newton-Jasper-Benton- Including the cities of Gibson City, Mendota, Beecher, Bradley, Carol Stream, Downers Grove, Plano, Elgin, Marseilles, Kentland, Rensselaer, Hammond, Gary, Aurora, Dwight, Fairbury, Watseka, Merrillville, Mundelein, Naperville, Coal City, Roselawn, Streator, Morris, Crete, Gilman, Bolingbrook, Joliet, Plainfield, Mokena, Manhattan, Valparaiso, Kankakee, Paxton, Oxford, Wheaton, Channahon, Peotone, DeMotte, Pontiac, Portage, Minooka, Buffalo Grove, Bourbonnais, Gurnee, Chesterton, Fowler, Ottawa, Lombard, Oswego, Morocco, Waukegan, Yorkville, La Salle, and Wilmington 415 AM CDT Thu Jul 24 2025 /515 AM EDT Thu Jul 24 2025/ ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT /11 PM EDT/ THIS EVENING... * WHAT...Peak afternoon heat index values of 105 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...Until 10 PM CDT /11 PM EDT/ this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-241915- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Orland Park, Cicero, Oak Park, Oak Forest, Chicago, Des Plaines, Lemont, Oak Lawn, Calumet City, Schaumburg, La Grange, Evanston, Park Forest, Palatine, and Northbrook 415 AM CDT Thu Jul 24 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...Peak afternoon heat index values of 100 to 105 expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Birk Action: Continued Issued At: 2025-07-24 10:53:40 246 WWUS73 KLOT 241553 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 1053 AM CDT Thu Jul 24 2025 ILZ006-012-013-019>021-023-032-033-039-106>108-INZ001-002-010-011- 019-250200- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will-Lake IN- Porter-Newton-Jasper-Benton- Including the cities of Fowler, Mokena, Waukegan, Wheaton, Chesterton, Lombard, Beecher, Valparaiso, Hammond, Coal City, Carol Stream, Naperville, Buffalo Grove, Aurora, Merrillville, Morocco, Kankakee, Plano, Paxton, Minooka, Bradley, Oswego, Roselawn, Downers Grove, Bolingbrook, Streator, Manhattan, Watseka, Gary, Oxford, Gibson City, Plainfield, Mendota, Joliet, DeMotte, Elgin, Marseilles, Pontiac, Fairbury, Bourbonnais, Wilmington, Peotone, Ottawa, Dwight, Kentland, La Salle, Crete, Yorkville, Gilman, Portage, Mundelein, Morris, Gurnee, Rensselaer, and Channahon 1053 AM CDT Thu Jul 24 2025 /1153 AM EDT Thu Jul 24 2025/ ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT /11 PM EDT/ THIS EVENING... * WHAT...Peak afternoon heat index values of 105 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...Until 10 PM CDT /11 PM EDT/ this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-250200- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Oak Lawn, Park Forest, Northbrook, Calumet City, Schaumburg, Des Plaines, Evanston, Chicago, Oak Forest, Oak Park, Palatine, Lemont, Cicero, Orland Park, and La Grange 1053 AM CDT Thu Jul 24 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...Peak afternoon heat index values of 100 to 105 expected. * WHERE...Cook County. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Action: Continued Issued At: 2025-07-24 10:53:40 246 WWUS73 KLOT 241553 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 1053 AM CDT Thu Jul 24 2025 ILZ006-012-013-019>021-023-032-033-039-106>108-INZ001-002-010-011- 019-250200- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston- Iroquois-Ford-Northern Will-Southern Will-Eastern Will-Lake IN- Porter-Newton-Jasper-Benton- Including the cities of Fowler, Mokena, Waukegan, Wheaton, Chesterton, Lombard, Beecher, Valparaiso, Hammond, Coal City, Carol Stream, Naperville, Buffalo Grove, Aurora, Merrillville, Morocco, Kankakee, Plano, Paxton, Minooka, Bradley, Oswego, Roselawn, Downers Grove, Bolingbrook, Streator, Manhattan, Watseka, Gary, Oxford, Gibson City, Plainfield, Mendota, Joliet, DeMotte, Elgin, Marseilles, Pontiac, Fairbury, Bourbonnais, Wilmington, Peotone, Ottawa, Dwight, Kentland, La Salle, Crete, Yorkville, Gilman, Portage, Mundelein, Morris, Gurnee, Rensselaer, and Channahon 1053 AM CDT Thu Jul 24 2025 /1153 AM EDT Thu Jul 24 2025/ ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT /11 PM EDT/ THIS EVENING... * WHAT...Peak afternoon heat index values of 105 to 110 expected. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...Until 10 PM CDT /11 PM EDT/ this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ILZ103>105-250200- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Oak Lawn, Park Forest, Northbrook, Calumet City, Schaumburg, Des Plaines, Evanston, Chicago, Oak Forest, Oak Park, Palatine, Lemont, Cicero, Orland Park, and La Grange 1053 AM CDT Thu Jul 24 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...Peak afternoon heat index values of 100 to 105 expected. * WHERE...Cook County. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Action: Continued Issued At: 2025-07-24 15:39:18 973 WWUS73 KLOT 242038 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 338 PM CDT Thu Jul 24 2025 ILZ006-012-013-020-103>106-242145- /O.CAN.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Lake IL-Kane-DuPage-Kendall-Northern Cook-Central Cook-Southern Cook-Northern Will- Including the cities of Mokena, Waukegan, Wheaton, Oak Forest, Lombard, Carol Stream, Naperville, Buffalo Grove, Aurora, Orland Park, La Grange, Plano, Calumet City, Oswego, Schaumburg, Evanston, Downers Grove, Chicago, Bolingbrook, Palatine, Oak Lawn, Plainfield, Joliet, Elgin, Lemont, Cicero, Yorkville, Northbrook, Des Plaines, Mundelein, Oak Park, Gurnee, and Park Forest 338 PM CDT Thu Jul 24 2025 ...HEAT ADVISORY IS CANCELLED... Thunderstorm outflow has moved through, ending the threat for excessive heat. The Heat Advisory is cancelled. $$ ILZ019-021-023-032-033-039-107-108-INZ001-002-010-011-019-250300- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ La Salle-Grundy-Kankakee-Livingston-Iroquois-Ford-Southern Will- Eastern Will-Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Fowler, Chesterton, Beecher, Valparaiso, Hammond, Coal City, Merrillville, Morocco, Kankakee, Paxton, Minooka, Bradley, Roselawn, Streator, Manhattan, Watseka, Gary, Oxford, Gibson City, DeMotte, Mendota, Marseilles, Pontiac, Fairbury, Bourbonnais, Wilmington, Peotone, Ottawa, Dwight, Kentland, La Salle, Crete, Gilman, Portage, Morris, Rensselaer, and Channahon 338 PM CDT Thu Jul 24 2025 /438 PM EDT Thu Jul 24 2025/ ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT /11 PM EDT/ THIS EVENING... * WHAT...Heat index values around 105 degrees. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...Until 10 PM CDT /11 PM EDT/ this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Carlaw Action: Cancelled Issued At: 2025-07-24 15:39:18 973 WWUS73 KLOT 242038 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 338 PM CDT Thu Jul 24 2025 ILZ006-012-013-020-103>106-242145- /O.CAN.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Lake IL-Kane-DuPage-Kendall-Northern Cook-Central Cook-Southern Cook-Northern Will- Including the cities of Mokena, Waukegan, Wheaton, Oak Forest, Lombard, Carol Stream, Naperville, Buffalo Grove, Aurora, Orland Park, La Grange, Plano, Calumet City, Oswego, Schaumburg, Evanston, Downers Grove, Chicago, Bolingbrook, Palatine, Oak Lawn, Plainfield, Joliet, Elgin, Lemont, Cicero, Yorkville, Northbrook, Des Plaines, Mundelein, Oak Park, Gurnee, and Park Forest 338 PM CDT Thu Jul 24 2025 ...HEAT ADVISORY IS CANCELLED... Thunderstorm outflow has moved through, ending the threat for excessive heat. The Heat Advisory is cancelled. $$ ILZ019-021-023-032-033-039-107-108-INZ001-002-010-011-019-250300- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ La Salle-Grundy-Kankakee-Livingston-Iroquois-Ford-Southern Will- Eastern Will-Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Fowler, Chesterton, Beecher, Valparaiso, Hammond, Coal City, Merrillville, Morocco, Kankakee, Paxton, Minooka, Bradley, Roselawn, Streator, Manhattan, Watseka, Gary, Oxford, Gibson City, DeMotte, Mendota, Marseilles, Pontiac, Fairbury, Bourbonnais, Wilmington, Peotone, Ottawa, Dwight, Kentland, La Salle, Crete, Gilman, Portage, Morris, Rensselaer, and Channahon 338 PM CDT Thu Jul 24 2025 /438 PM EDT Thu Jul 24 2025/ ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT /11 PM EDT/ THIS EVENING... * WHAT...Heat index values around 105 degrees. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...Until 10 PM CDT /11 PM EDT/ this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Carlaw Action: Cancelled Issued At: 2025-07-24 16:27:50 403 WWUS73 KLOT 242127 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 427 PM CDT Thu Jul 24 2025 ILZ019-021-107-108-INZ001-002-242230- /O.CAN.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ La Salle-Grundy-Southern Will-Eastern Will-Lake IN-Porter- Including the cities of Chesterton, Beecher, Valparaiso, Hammond, Coal City, Merrillville, Minooka, Streator, Manhattan, Gary, Mendota, Marseilles, Wilmington, Peotone, Ottawa, La Salle, Crete, Portage, Morris, and Channahon 427 PM CDT Thu Jul 24 2025 ...HEAT ADVISORY IS CANCELLED... Outflow and thunderstorms have ended the threat for excessive heat. The Heat Advisory is cancelled. $$ ILZ023-032-033-039-INZ010-011-019-250300- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Kankakee-Livingston-Iroquois-Ford-Newton-Jasper-Benton- Including the cities of Kankakee, Fowler, DeMotte, Paxton, Bradley, Pontiac, Fairbury, Gilman, Bourbonnais, Roselawn, Kentland, Watseka, Rensselaer, Morocco, Dwight, Oxford, and Gibson City 427 PM CDT Thu Jul 24 2025 /527 PM EDT Thu Jul 24 2025/ ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT /11 PM EDT/ THIS EVENING... * WHAT...Heat index values of 100 to 105 degrees. * WHERE...In Illinois, Livingston, Ford, Iroquois, and Kankakee Counties. In Indiana, Benton, Jasper, and Newton Counties. * WHEN...Until 10 PM CDT /11 PM EDT/ this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Carlaw Action: Continued Issued At: 2025-07-24 16:27:50 403 WWUS73 KLOT 242127 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 427 PM CDT Thu Jul 24 2025 ILZ019-021-107-108-INZ001-002-242230- /O.CAN.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ La Salle-Grundy-Southern Will-Eastern Will-Lake IN-Porter- Including the cities of Chesterton, Beecher, Valparaiso, Hammond, Coal City, Merrillville, Minooka, Streator, Manhattan, Gary, Mendota, Marseilles, Wilmington, Peotone, Ottawa, La Salle, Crete, Portage, Morris, and Channahon 427 PM CDT Thu Jul 24 2025 ...HEAT ADVISORY IS CANCELLED... Outflow and thunderstorms have ended the threat for excessive heat. The Heat Advisory is cancelled. $$ ILZ023-032-033-039-INZ010-011-019-250300- /O.CON.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Kankakee-Livingston-Iroquois-Ford-Newton-Jasper-Benton- Including the cities of Kankakee, Fowler, DeMotte, Paxton, Bradley, Pontiac, Fairbury, Gilman, Bourbonnais, Roselawn, Kentland, Watseka, Rensselaer, Morocco, Dwight, Oxford, and Gibson City 427 PM CDT Thu Jul 24 2025 /527 PM EDT Thu Jul 24 2025/ ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT /11 PM EDT/ THIS EVENING... * WHAT...Heat index values of 100 to 105 degrees. * WHERE...In Illinois, Livingston, Ford, Iroquois, and Kankakee Counties. In Indiana, Benton, Jasper, and Newton Counties. * WHEN...Until 10 PM CDT /11 PM EDT/ this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Carlaw Action: Cancelled Issued At: 2025-07-24 19:03:54 302 WWUS73 KLOT 250003 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 703 PM CDT Thu Jul 24 2025 ILZ023-032-033-039-INZ010-011-019-250115- /O.CAN.KLOT.HT.Y.0002.000000T0000Z-250725T0300Z/ Kankakee-Livingston-Iroquois-Ford-Newton-Jasper-Benton- Including the cities of Bourbonnais, Gibson City, Roselawn, Kentland, Pontiac, Fairbury, DeMotte, Morocco, Gilman, Watseka, Bradley, Dwight, Paxton, Rensselaer, Fowler, Oxford, and Kankakee 703 PM CDT Thu Jul 24 2025 /803 PM EDT Thu Jul 24 2025/ ...HEAT ADVISORY IS CANCELLED... Heat index values are diminishing allowing the advisory to be cancelled. $$ DK | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||