|
Home Return to list Heat Advisory 0012 Issued by the St. Louis Forecast Office
Action: Time Extended Issued At: 2026-09-15 11:53:49 298 WWUS73 KLSX 151653 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 1153 AM CDT Tue Sep 15 2026 ILZ064-069-070-074-079-100>102-MOZ047>049-059>065-072>075-084-085- 099-160800- /O.EXT.KLSX.HT.Y.0012.000000T0000Z-260919T0100Z/ Bond IL-Clinton IL-Marion IL-Washington IL-Randolph IL-Madison IL- Saint Clair IL-Monroe IL-Moniteau MO-Cole MO-Osage MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-Madison MO-Reynolds MO- Including the cities of Salem, Cahokia, Saint Louis, Belleville, Jefferson City, Sullivan, Farmington, Alton, Centralia, Chester, Saint Charles, Union, Edwardsville, Washington, and Sparta 1153 AM CDT Tue Sep 15 2026 ...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM CDT FRIDAY... * WHAT...Heat index values up to 106. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 8 PM CDT Friday. * 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. People in the Saint Louis Metropolitan Area can get information about cooling centers or energy assistance related to the excessive heat by calling the United Way of Greater Saint Louis at 800-427-4626, or if calling from a land line phone dial 2-1-1. You can also call Cool Down Saint Louis at 314-241-7668. && $$ Gosselin Action: Continued Issued At: 2026-09-16 02:51:18 877 WWUS73 KLSX 160751 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 251 AM CDT Wed Sep 16 2026 ILZ064-069-070-074-079-100>102-MOZ047>049-059>065-072>075-084-085- 099-162300- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260919T0100Z/ Bond IL-Clinton IL-Marion IL-Washington IL-Randolph IL-Madison IL- Saint Clair IL-Monroe IL-Moniteau MO-Cole MO-Osage MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-Madison MO-Reynolds MO- Including the cities of Farmington, Edwardsville, Saint Louis, Salem, Centralia, Sullivan, Alton, Washington, Union, Cahokia, Chester, Jefferson City, Belleville, Sparta, and Saint Charles 251 AM CDT Wed Sep 16 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT FRIDAY... * WHAT...Heat index values up to 107. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 8 PM CDT Friday. * 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. People in the Saint Louis Metropolitan Area can get information about cooling centers or energy assistance related to the excessive heat by calling the United Way of Greater Saint Louis at 800-427-4626, or if calling from a land line phone dial 2-1-1. You can also call Cool Down Saint Louis at 314-241-7668. && $$ Peine Action: Area Extended Issued At: 2026-09-16 11:29:45 827 WWUS73 KLSX 161629 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 1129 AM CDT Wed Sep 16 2026 ILZ058>060-065-098-099-MOZ041-050>052-170730- /O.EXA.KLSX.HT.Y.0012.000000T0000Z-260919T0100Z/ Greene IL-Macoupin IL-Montgomery IL-Fayette IL-Calhoun IL-Jersey IL-Boone MO-Callaway MO-Montgomery MO-Lincoln MO- Including the cities of Columbia, Fulton, Vandalia, and Litchfield 1129 AM CDT Wed Sep 16 2026 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT FRIDAY... * WHAT...Heat index values up to 105. * WHERE...In Illinois, Fayette IL, Montgomery IL, Calhoun IL, Greene IL, Jersey IL, and Macoupin IL Counties. In Missouri, Boone MO, Callaway MO, Lincoln MO, and Montgomery MO Counties. * WHEN...Until 8 PM CDT Friday. * 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ ILZ064-069-070-074-079-100>102-MOZ047>049-059>065-072>075-084-085- 099-170730- /O.EXT.KLSX.HT.Y.0012.000000T0000Z-260920T0100Z/ Bond IL-Clinton IL-Marion IL-Washington IL-Randolph IL-Madison IL- Saint Clair IL-Monroe IL-Moniteau MO-Cole MO-Osage MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-Madison MO-Reynolds MO- Including the cities of Union, Sparta, Centralia, Jefferson City, Farmington, Cahokia, Saint Louis, Alton, Belleville, Salem, Saint Charles, Sullivan, Washington, Edwardsville, and Chester 1129 AM CDT Wed Sep 16 2026 ...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM CDT SATURDAY... * WHAT...Heat index values up to 107. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 8 PM CDT Saturday. * 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. People in the Saint Louis Metropolitan Area can get information about cooling centers or energy assistance related to the excessive heat by calling the United Way of Greater Saint Louis at 800-427-4626, or if calling from a land line phone dial 2-1-1. You can also call Cool Down Saint Louis at 314-241-7668. && $$ BSH Action: Time Extended Issued At: 2026-09-16 11:29:45 827 WWUS73 KLSX 161629 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 1129 AM CDT Wed Sep 16 2026 ILZ058>060-065-098-099-MOZ041-050>052-170730- /O.EXA.KLSX.HT.Y.0012.000000T0000Z-260919T0100Z/ Greene IL-Macoupin IL-Montgomery IL-Fayette IL-Calhoun IL-Jersey IL-Boone MO-Callaway MO-Montgomery MO-Lincoln MO- Including the cities of Columbia, Fulton, Vandalia, and Litchfield 1129 AM CDT Wed Sep 16 2026 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT FRIDAY... * WHAT...Heat index values up to 105. * WHERE...In Illinois, Fayette IL, Montgomery IL, Calhoun IL, Greene IL, Jersey IL, and Macoupin IL Counties. In Missouri, Boone MO, Callaway MO, Lincoln MO, and Montgomery MO Counties. * WHEN...Until 8 PM CDT Friday. * 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ ILZ064-069-070-074-079-100>102-MOZ047>049-059>065-072>075-084-085- 099-170730- /O.EXT.KLSX.HT.Y.0012.000000T0000Z-260920T0100Z/ Bond IL-Clinton IL-Marion IL-Washington IL-Randolph IL-Madison IL- Saint Clair IL-Monroe IL-Moniteau MO-Cole MO-Osage MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-Madison MO-Reynolds MO- Including the cities of Union, Sparta, Centralia, Jefferson City, Farmington, Cahokia, Saint Louis, Alton, Belleville, Salem, Saint Charles, Sullivan, Washington, Edwardsville, and Chester 1129 AM CDT Wed Sep 16 2026 ...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM CDT SATURDAY... * WHAT...Heat index values up to 107. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 8 PM CDT Saturday. * 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. People in the Saint Louis Metropolitan Area can get information about cooling centers or energy assistance related to the excessive heat by calling the United Way of Greater Saint Louis at 800-427-4626, or if calling from a land line phone dial 2-1-1. You can also call Cool Down Saint Louis at 314-241-7668. && $$ BSH Action: Continued Issued At: 2026-09-17 02:19:37 764 WWUS73 KLSX 170719 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 219 AM CDT Thu Sep 17 2026 ILZ058>060-065-098-099-MOZ041-050>052-172230- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260919T0100Z/ Greene IL-Macoupin IL-Montgomery IL-Fayette IL-Calhoun IL-Jersey IL-Boone MO-Callaway MO-Montgomery MO-Lincoln MO- Including the cities of Litchfield, Vandalia, Fulton, and Columbia 219 AM CDT Thu Sep 17 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT FRIDAY... * WHAT...Heat index values up to 105. * WHERE...In Illinois, Fayette IL, Montgomery IL, Calhoun IL, Greene IL, Jersey IL, and Macoupin IL Counties. In Missouri, Boone MO, Callaway MO, Lincoln MO, and Montgomery MO Counties. * WHEN...Until 8 PM CDT Friday. * 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ ILZ064-069-070-074-079-100>102-MOZ047>049-059>065-072>075-084-085- 099-172230- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260920T0100Z/ Bond IL-Clinton IL-Marion IL-Washington IL-Randolph IL-Madison IL- Saint Clair IL-Monroe IL-Moniteau MO-Cole MO-Osage MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-Madison MO-Reynolds MO- Including the cities of Alton, Chester, Salem, Edwardsville, Washington, Jefferson City, Union, Cahokia, Belleville, Saint Charles, Saint Louis, Centralia, Farmington, Sullivan, and Sparta 219 AM CDT Thu Sep 17 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT SATURDAY... * WHAT...Heat index values up to 106. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 8 PM CDT Saturday. * 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. People in the Saint Louis Metropolitan Area can get information about cooling centers or energy assistance related to the excessive heat by calling the United Way of Greater Saint Louis at 800-427-4626, or if calling from a land line phone dial 2-1-1. You can also call Cool Down Saint Louis at 314-241-7668. && $$ Peine Action: Continued Issued At: 2026-09-17 02:19:37 764 WWUS73 KLSX 170719 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 219 AM CDT Thu Sep 17 2026 ILZ058>060-065-098-099-MOZ041-050>052-172230- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260919T0100Z/ Greene IL-Macoupin IL-Montgomery IL-Fayette IL-Calhoun IL-Jersey IL-Boone MO-Callaway MO-Montgomery MO-Lincoln MO- Including the cities of Litchfield, Vandalia, Fulton, and Columbia 219 AM CDT Thu Sep 17 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT FRIDAY... * WHAT...Heat index values up to 105. * WHERE...In Illinois, Fayette IL, Montgomery IL, Calhoun IL, Greene IL, Jersey IL, and Macoupin IL Counties. In Missouri, Boone MO, Callaway MO, Lincoln MO, and Montgomery MO Counties. * WHEN...Until 8 PM CDT Friday. * 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ ILZ064-069-070-074-079-100>102-MOZ047>049-059>065-072>075-084-085- 099-172230- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260920T0100Z/ Bond IL-Clinton IL-Marion IL-Washington IL-Randolph IL-Madison IL- Saint Clair IL-Monroe IL-Moniteau MO-Cole MO-Osage MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-Madison MO-Reynolds MO- Including the cities of Alton, Chester, Salem, Edwardsville, Washington, Jefferson City, Union, Cahokia, Belleville, Saint Charles, Saint Louis, Centralia, Farmington, Sullivan, and Sparta 219 AM CDT Thu Sep 17 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT SATURDAY... * WHAT...Heat index values up to 106. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 8 PM CDT Saturday. * 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. People in the Saint Louis Metropolitan Area can get information about cooling centers or energy assistance related to the excessive heat by calling the United Way of Greater Saint Louis at 800-427-4626, or if calling from a land line phone dial 2-1-1. You can also call Cool Down Saint Louis at 314-241-7668. && $$ Peine Action: Continued Issued At: 2026-09-17 16:44:49 029 WWUS73 KLSX 172144 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 444 PM CDT Thu Sep 17 2026 ILZ058>060-065-098-099-MOZ041-050>052-181245- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260919T0100Z/ Greene IL-Macoupin IL-Montgomery IL-Fayette IL-Calhoun IL-Jersey IL-Boone MO-Callaway MO-Montgomery MO-Lincoln MO- Including the cities of Fulton, Vandalia, Columbia, and Litchfield 444 PM CDT Thu Sep 17 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT FRIDAY... * WHAT...Heat index values up to 103. * WHERE...In Illinois, Fayette IL, Montgomery IL, Calhoun IL, Greene IL, Jersey IL, and Macoupin IL Counties. In Missouri, Boone MO, Callaway MO, Lincoln MO, and Montgomery MO Counties. * WHEN...Until 8 PM CDT Friday. * 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ ILZ064-069-070-074-079-100>102-MOZ047>049-059>065-072>075-084-085- 099-181245- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260920T0100Z/ Bond IL-Clinton IL-Marion IL-Washington IL-Randolph IL-Madison IL- Saint Clair IL-Monroe IL-Moniteau MO-Cole MO-Osage MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-Madison MO-Reynolds MO- Including the cities of Salem, Alton, Saint Charles, Union, Sullivan, Washington, Saint Louis, Chester, Edwardsville, Belleville, Centralia, Cahokia, Jefferson City, Sparta, and Farmington 444 PM CDT Thu Sep 17 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT SATURDAY... * WHAT...Heat index values up to 106. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 8 PM CDT Saturday. * 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. People in the Saint Louis Metropolitan Area can get information about cooling centers or energy assistance related to the excessive heat by calling the United Way of Greater Saint Louis at 800-427-4626, or if calling from a land line phone dial 2-1-1. You can also call Cool Down Saint Louis at 314-241-7668. && $$ Carney Action: Continued Issued At: 2026-09-17 16:44:49 029 WWUS73 KLSX 172144 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 444 PM CDT Thu Sep 17 2026 ILZ058>060-065-098-099-MOZ041-050>052-181245- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260919T0100Z/ Greene IL-Macoupin IL-Montgomery IL-Fayette IL-Calhoun IL-Jersey IL-Boone MO-Callaway MO-Montgomery MO-Lincoln MO- Including the cities of Fulton, Vandalia, Columbia, and Litchfield 444 PM CDT Thu Sep 17 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT FRIDAY... * WHAT...Heat index values up to 103. * WHERE...In Illinois, Fayette IL, Montgomery IL, Calhoun IL, Greene IL, Jersey IL, and Macoupin IL Counties. In Missouri, Boone MO, Callaway MO, Lincoln MO, and Montgomery MO Counties. * WHEN...Until 8 PM CDT Friday. * 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ ILZ064-069-070-074-079-100>102-MOZ047>049-059>065-072>075-084-085- 099-181245- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260920T0100Z/ Bond IL-Clinton IL-Marion IL-Washington IL-Randolph IL-Madison IL- Saint Clair IL-Monroe IL-Moniteau MO-Cole MO-Osage MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-Madison MO-Reynolds MO- Including the cities of Salem, Alton, Saint Charles, Union, Sullivan, Washington, Saint Louis, Chester, Edwardsville, Belleville, Centralia, Cahokia, Jefferson City, Sparta, and Farmington 444 PM CDT Thu Sep 17 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT SATURDAY... * WHAT...Heat index values up to 106. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 8 PM CDT Saturday. * 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. People in the Saint Louis Metropolitan Area can get information about cooling centers or energy assistance related to the excessive heat by calling the United Way of Greater Saint Louis at 800-427-4626, or if calling from a land line phone dial 2-1-1. You can also call Cool Down Saint Louis at 314-241-7668. && $$ Carney Action: Continued Issued At: 2026-09-18 02:59:05 467 WWUS73 KLSX 180758 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 258 AM CDT Fri Sep 18 2026 ILZ058>060-065-098-099-MOZ041-050>052-182300- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260919T0100Z/ Greene IL-Macoupin IL-Montgomery IL-Fayette IL-Calhoun IL-Jersey IL-Boone MO-Callaway MO-Montgomery MO-Lincoln MO- Including the cities of Litchfield, Fulton, Vandalia, and Columbia 258 AM CDT Fri Sep 18 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING... * WHAT...Heat index values up to 105. * WHERE...In Illinois, Fayette IL, Montgomery IL, Calhoun IL, Greene IL, Jersey IL, and Macoupin IL Counties. In Missouri, Boone MO, Callaway MO, Lincoln MO, and Montgomery MO Counties. * WHEN...Until 8 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ ILZ064-069-070-074-079-100>102-MOZ047>049-059>065-072>075-084-085- 099-182300- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260920T0100Z/ Bond IL-Clinton IL-Marion IL-Washington IL-Randolph IL-Madison IL- Saint Clair IL-Monroe IL-Moniteau MO-Cole MO-Osage MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-Madison MO-Reynolds MO- Including the cities of Union, Cahokia, Sparta, Saint Louis, Saint Charles, Washington, Salem, Chester, Farmington, Edwardsville, Alton, Belleville, Centralia, Jefferson City, and Sullivan 258 AM CDT Fri Sep 18 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT SATURDAY... * WHAT...Heat index values up to 107. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 8 PM CDT Saturday. * 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. People in the Saint Louis Metropolitan Area can get information about cooling centers or energy assistance related to the excessive heat by calling the United Way of Greater Saint Louis at 800-427-4626, or if calling from a land line phone dial 2-1-1. You can also call Cool Down Saint Louis at 314-241-7668. && $$ Kimble Action: Continued Issued At: 2026-09-18 02:59:05 467 WWUS73 KLSX 180758 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 258 AM CDT Fri Sep 18 2026 ILZ058>060-065-098-099-MOZ041-050>052-182300- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260919T0100Z/ Greene IL-Macoupin IL-Montgomery IL-Fayette IL-Calhoun IL-Jersey IL-Boone MO-Callaway MO-Montgomery MO-Lincoln MO- Including the cities of Litchfield, Fulton, Vandalia, and Columbia 258 AM CDT Fri Sep 18 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING... * WHAT...Heat index values up to 105. * WHERE...In Illinois, Fayette IL, Montgomery IL, Calhoun IL, Greene IL, Jersey IL, and Macoupin IL Counties. In Missouri, Boone MO, Callaway MO, Lincoln MO, and Montgomery MO Counties. * WHEN...Until 8 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ ILZ064-069-070-074-079-100>102-MOZ047>049-059>065-072>075-084-085- 099-182300- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260920T0100Z/ Bond IL-Clinton IL-Marion IL-Washington IL-Randolph IL-Madison IL- Saint Clair IL-Monroe IL-Moniteau MO-Cole MO-Osage MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-Madison MO-Reynolds MO- Including the cities of Union, Cahokia, Sparta, Saint Louis, Saint Charles, Washington, Salem, Chester, Farmington, Edwardsville, Alton, Belleville, Centralia, Jefferson City, and Sullivan 258 AM CDT Fri Sep 18 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT SATURDAY... * WHAT...Heat index values up to 107. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 8 PM CDT Saturday. * 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. People in the Saint Louis Metropolitan Area can get information about cooling centers or energy assistance related to the excessive heat by calling the United Way of Greater Saint Louis at 800-427-4626, or if calling from a land line phone dial 2-1-1. You can also call Cool Down Saint Louis at 314-241-7668. && $$ Kimble Action: Continued Issued At: 2026-09-18 14:00:22 304 WWUS73 KLSX 181900 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 200 PM CDT Fri Sep 18 2026 ILZ058>060-065-098-099-MOZ041-050>052-190100- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260919T0100Z/ Greene IL-Macoupin IL-Montgomery IL-Fayette IL-Calhoun IL-Jersey IL-Boone MO-Callaway MO-Montgomery MO-Lincoln MO- Including the cities of Fulton, Vandalia, Litchfield, and Columbia 200 PM CDT Fri Sep 18 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING... * WHAT...Heat index values up to 105. * WHERE...In Illinois, Fayette IL, Montgomery IL, Calhoun IL, Greene IL, Jersey IL, and Macoupin IL Counties. In Missouri, Boone MO, Callaway MO, Lincoln MO, and Montgomery MO Counties. * WHEN...Until 8 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. && $$ ILZ064-069-070-074-079-100>102-MOZ047>049-059>065-072>075-084-085- 099-191000- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260920T0100Z/ Bond IL-Clinton IL-Marion IL-Washington IL-Randolph IL-Madison IL- Saint Clair IL-Monroe IL-Moniteau MO-Cole MO-Osage MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-Madison MO-Reynolds MO- Including the cities of Saint Charles, Farmington, Jefferson City, Alton, Sparta, Saint Louis, Cahokia, Washington, Chester, Belleville, Edwardsville, Union, Sullivan, Salem, and Centralia 200 PM CDT Fri Sep 18 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT SATURDAY... * WHAT...Heat index values up to 105. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 8 PM CDT Saturday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ 19 Action: Continued Issued At: 2026-09-18 14:00:22 304 WWUS73 KLSX 181900 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 200 PM CDT Fri Sep 18 2026 ILZ058>060-065-098-099-MOZ041-050>052-190100- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260919T0100Z/ Greene IL-Macoupin IL-Montgomery IL-Fayette IL-Calhoun IL-Jersey IL-Boone MO-Callaway MO-Montgomery MO-Lincoln MO- Including the cities of Fulton, Vandalia, Litchfield, and Columbia 200 PM CDT Fri Sep 18 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING... * WHAT...Heat index values up to 105. * WHERE...In Illinois, Fayette IL, Montgomery IL, Calhoun IL, Greene IL, Jersey IL, and Macoupin IL Counties. In Missouri, Boone MO, Callaway MO, Lincoln MO, and Montgomery MO Counties. * WHEN...Until 8 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. && $$ ILZ064-069-070-074-079-100>102-MOZ047>049-059>065-072>075-084-085- 099-191000- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260920T0100Z/ Bond IL-Clinton IL-Marion IL-Washington IL-Randolph IL-Madison IL- Saint Clair IL-Monroe IL-Moniteau MO-Cole MO-Osage MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-Madison MO-Reynolds MO- Including the cities of Saint Charles, Farmington, Jefferson City, Alton, Sparta, Saint Louis, Cahokia, Washington, Chester, Belleville, Edwardsville, Union, Sullivan, Salem, and Centralia 200 PM CDT Fri Sep 18 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT SATURDAY... * WHAT...Heat index values up to 105. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 8 PM CDT Saturday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ 19 Action: Continued Issued At: 2026-09-19 04:15:34 261 WWUS73 KLSX 190915 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 415 AM CDT Sat Sep 19 2026 ILZ064-069-070-074-079-100>102-MOZ047>049-059>065-072>075-084-085- 099-200015- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260920T0100Z/ Bond IL-Clinton IL-Marion IL-Washington IL-Randolph IL-Madison IL- Saint Clair IL-Monroe IL-Moniteau MO-Cole MO-Osage MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-Madison MO-Reynolds MO- Including the cities of Union, Salem, Saint Charles, Sparta, Washington, Saint Louis, Chester, Farmington, Jefferson City, Edwardsville, Sullivan, Belleville, Alton, Cahokia, and Centralia 415 AM CDT Sat Sep 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING... * WHAT...Heat index values up to 101. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 8 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. && $$ Action: Continued Issued At: 2026-09-19 12:51:51 604 WWUS73 KLSX 191751 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 1251 PM CDT Sat Sep 19 2026 ILZ064-069-070-074-079-100>102-MOZ047>049-059>065-072>075-084-085- 099-200100- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260920T0100Z/ Bond IL-Clinton IL-Marion IL-Washington IL-Randolph IL-Madison IL- Saint Clair IL-Monroe IL-Moniteau MO-Cole MO-Osage MO- Gasconade MO-Warren MO-Saint Charles MO-Franklin MO- Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO- Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO- Madison MO-Reynolds MO- Including the cities of Centralia, Salem, Chester, Sparta, Alton, Edwardsville, Belleville, Cahokia, Jefferson City, Saint Charles, Washington, Union, Sullivan, Saint Louis, and Farmington 1251 PM CDT Sat Sep 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING... * WHAT...Heat index values up to 101. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 8 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Maples Action: Expired Issued At: 2026-09-19 19:58:35 316 WWUS73 KLSX 200058 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 758 PM CDT Sat Sep 19 2026 ILZ064-069-070-074-079-100>102-MOZ047>049-059>065-072>075-084-085- 099-200200- /O.EXP.KLSX.HT.Y.0012.000000T0000Z-260920T0100Z/ Bond IL-Clinton IL-Marion IL-Washington IL-Randolph IL-Madison IL- Saint Clair IL-Monroe IL-Moniteau MO-Cole MO-Osage MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-Madison MO-Reynolds MO- Including the cities of Sullivan, Union, Belleville, Chester, Jefferson City, Alton, Saint Charles, Washington, Saint Louis, Farmington, Cahokia, Sparta, Salem, Edwardsville, and Centralia 758 PM CDT Sat Sep 19 2026 ...HEAT ADVISORY WILL EXPIRE AT 8 PM CDT THIS EVENING... Temperatures are dropping into the 70s and 80s this evening bringing an end to the dangerous heat. $$ Britt | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||