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Home Return to list Areal Flood Watch 0005 Issued by the Chicago Forecast Office
Action: New Issued At: 2025-07-25 11:49:52
531
WGUS63 KLOT 251649
FFALOT
URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Chicago IL
1149 AM CDT Fri Jul 25 2025
ILZ012-013-020-021-103>108-INZ001-252300-
/O.NEW.KLOT.FA.A.0005.250725T1649Z-250725T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kane-DuPage-Kendall-Grundy-Northern Cook-Central Cook-Southern
Cook-Northern Will-Southern Will-Eastern Will-Lake IN-
Including the cities of Downers Grove, Plainfield, Orland Park,
Schaumburg, Channahon, Wilmington, Lombard, La Grange, Cicero,
Joliet, Peotone, Park Forest, Oak Park, Palatine, Carol Stream,
Manhattan, Minooka, Des Plaines, Bolingbrook, Oak Lawn,
Northbrook, Aurora, Merrillville, Coal City, Beecher, Chicago,
Yorkville, Gary, Mokena, Calumet City, Crete, Morris, Oswego,
Plano, Elgin, Oak Forest, Naperville, Hammond, Lemont, Wheaton,
and Evanston
1149 AM CDT Fri Jul 25 2025
...FLOOD WATCH IN EFFECT UNTIL 6 PM CDT THIS EVENING...
* WHAT...Flash flooding caused by excessive rainfall is possible.
* WHERE...Portions of northeast Illinois, including the following
areas, Central Cook, DuPage, Eastern Will, Grundy, Kane, Kendall,
Northern Cook, Northern Will, Southern Cook and Southern Will and
northwest Indiana, including the following area, Lake IN.
* WHEN...Until 6 PM CDT this evening.
* IMPACTS...Creeks and streams may rise out of their banks.
Underpasses may be flooded. Roads and streets may be flooded.
Extensive street flooding possible.
* ADDITIONAL DETAILS...
- Slow moving showers and thunderstorms with torrential
rainfall will produce locally very heavy rainfall today.
Rainfall amounts of 2 to 5 inches or more will be possible on
a localized basis. This will lead to instances of flash
flooding into this afternoon.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flood Watch for flash flooding means rapid-onset flooding is
possible, but not yet certain, based upon the latest forecasts.
Flash flooding is a dangerous situation. Persons with interests
along area rivers, creeks, and other waterways should monitor the
latest forecasts and be prepared to take action should flooding
develop.
&&
$$
Carlaw
Action: Time Extended Issued At: 2025-07-25 17:31:29
572
WGUS63 KLOT 252230
FFALOT
URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Chicago IL
530 PM CDT Fri Jul 25 2025
ILZ003>006-008-010-011-019-261000-
/O.EXB.KLOT.FA.A.0005.000000T0000Z-250727T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-La Salle-
Including the cities of Gurnee, Dixon, Waukegan, Crystal Lake,
Belvidere, Buffalo Grove, Ottawa, Rockford, Mundelein, Streator,
Rochelle, Marseilles, Mendota, Byron, La Salle, Woodstock,
Oregon, DeKalb, Algonquin, McHenry, and Sycamore
530 PM CDT Fri Jul 25 2025
...FLOOD WATCH IN EFFECT THROUGH SATURDAY EVENING...
* WHAT...Flash flooding caused by excessive rainfall due to repeated
rounds of torrential rain-producing thunderstorms is possible.
* WHERE...Boone, De Kalb, La Salle, Lee, Ogle, Winnebago, Lake IL
and McHenry counties in Illinois.
* WHEN...Through Saturday evening.
* IMPACTS...Creeks and streams may rise out of their banks. In
addition, roads and streets may flood, especially in areas where
storm drains are clogged with debris. Finally, flooding of
basements may occur if thunderstorms train over urban areas.
* ADDITIONAL DETAILS...
- Over the next 36 hours, several rounds of torrential rain-
producing thunderstorms are possible in the watch area
including over areas that experienced several inches of rain
in the past few days. The tropical-like airmass will support
rain rates in excess of 2 inches per hour in the strongest
thunderstorms, leading to a threat for flash flooding.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the latest forecasts and be prepared to take quick action
should flooding develop.
&&
$$
ILZ012-013-020-021-103>108-INZ001-261000-
/O.EXT.KLOT.FA.A.0005.000000T0000Z-250727T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kane-DuPage-Kendall-Grundy-Northern Cook-Central Cook-Southern
Cook-Northern Will-Southern Will-Eastern Will-Lake IN-
Including the cities of Oswego, Crete, Morris, Evanston,
Naperville, Orland Park, Oak Park, Beecher, Cicero, Merrillville,
Manhattan, Hammond, Chicago, Northbrook, Carol Stream, Joliet,
Elgin, Palatine, Oak Lawn, Lombard, Calumet City, Park Forest,
Coal City, Wilmington, Oak Forest, Downers Grove, Bolingbrook,
Yorkville, Plainfield, Schaumburg, Wheaton, Gary, Peotone,
Aurora, Plano, Minooka, Lemont, Channahon, Des Plaines, Mokena,
and La Grange
530 PM CDT Fri Jul 25 2025
...FLOOD WATCH NOW IN EFFECT THROUGH SATURDAY EVENING...
* WHAT...Flash flooding caused by excessive rainfall due to repeated
rounds of torrential rain-producing thunderstorms is possible.
* WHERE...Cook, DuPage, Eastern Will, Grundy, Kane, Kendall, Will
counties in Illinois and Lake county in Indiana.
* WHEN...Through Saturday evening.
* IMPACTS...Creeks and streams may rise out of their banks. In
addition, roads and streets may flood, especially in areas where
storm drains are clogged with debris. Finally, flooding of
basements may occur if thunderstorms train over urban areas.
* ADDITIONAL DETAILS...
- Over the next 36 hours, several rounds of torrential rain-
producing thunderstorms are possible in the watch area
including over areas that experienced several inches of rain
in the past few days. The tropical-like airmass will support
rain rates in excess of 2 inches per hour in the strongest
thunderstorms, leading to a threat for flash flooding.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the latest forecasts and be prepared to take quick action
should flooding develop.
&&
$$
Borchardt
Action: Time and Area Extended Issued At: 2025-07-25 17:31:29
572
WGUS63 KLOT 252230
FFALOT
URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Chicago IL
530 PM CDT Fri Jul 25 2025
ILZ003>006-008-010-011-019-261000-
/O.EXB.KLOT.FA.A.0005.000000T0000Z-250727T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-La Salle-
Including the cities of Gurnee, Dixon, Waukegan, Crystal Lake,
Belvidere, Buffalo Grove, Ottawa, Rockford, Mundelein, Streator,
Rochelle, Marseilles, Mendota, Byron, La Salle, Woodstock,
Oregon, DeKalb, Algonquin, McHenry, and Sycamore
530 PM CDT Fri Jul 25 2025
...FLOOD WATCH IN EFFECT THROUGH SATURDAY EVENING...
* WHAT...Flash flooding caused by excessive rainfall due to repeated
rounds of torrential rain-producing thunderstorms is possible.
* WHERE...Boone, De Kalb, La Salle, Lee, Ogle, Winnebago, Lake IL
and McHenry counties in Illinois.
* WHEN...Through Saturday evening.
* IMPACTS...Creeks and streams may rise out of their banks. In
addition, roads and streets may flood, especially in areas where
storm drains are clogged with debris. Finally, flooding of
basements may occur if thunderstorms train over urban areas.
* ADDITIONAL DETAILS...
- Over the next 36 hours, several rounds of torrential rain-
producing thunderstorms are possible in the watch area
including over areas that experienced several inches of rain
in the past few days. The tropical-like airmass will support
rain rates in excess of 2 inches per hour in the strongest
thunderstorms, leading to a threat for flash flooding.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the latest forecasts and be prepared to take quick action
should flooding develop.
&&
$$
ILZ012-013-020-021-103>108-INZ001-261000-
/O.EXT.KLOT.FA.A.0005.000000T0000Z-250727T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kane-DuPage-Kendall-Grundy-Northern Cook-Central Cook-Southern
Cook-Northern Will-Southern Will-Eastern Will-Lake IN-
Including the cities of Oswego, Crete, Morris, Evanston,
Naperville, Orland Park, Oak Park, Beecher, Cicero, Merrillville,
Manhattan, Hammond, Chicago, Northbrook, Carol Stream, Joliet,
Elgin, Palatine, Oak Lawn, Lombard, Calumet City, Park Forest,
Coal City, Wilmington, Oak Forest, Downers Grove, Bolingbrook,
Yorkville, Plainfield, Schaumburg, Wheaton, Gary, Peotone,
Aurora, Plano, Minooka, Lemont, Channahon, Des Plaines, Mokena,
and La Grange
530 PM CDT Fri Jul 25 2025
...FLOOD WATCH NOW IN EFFECT THROUGH SATURDAY EVENING...
* WHAT...Flash flooding caused by excessive rainfall due to repeated
rounds of torrential rain-producing thunderstorms is possible.
* WHERE...Cook, DuPage, Eastern Will, Grundy, Kane, Kendall, Will
counties in Illinois and Lake county in Indiana.
* WHEN...Through Saturday evening.
* IMPACTS...Creeks and streams may rise out of their banks. In
addition, roads and streets may flood, especially in areas where
storm drains are clogged with debris. Finally, flooding of
basements may occur if thunderstorms train over urban areas.
* ADDITIONAL DETAILS...
- Over the next 36 hours, several rounds of torrential rain-
producing thunderstorms are possible in the watch area
including over areas that experienced several inches of rain
in the past few days. The tropical-like airmass will support
rain rates in excess of 2 inches per hour in the strongest
thunderstorms, leading to a threat for flash flooding.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the latest forecasts and be prepared to take quick action
should flooding develop.
&&
$$
Borchardt
Action: Cancelled Issued At: 2025-07-26 04:22:30
168
WGUS63 KLOT 260922
FFALOT
Flood Watch
National Weather Service Chicago IL
422 AM CDT Sat Jul 26 2025
ILZ003>006-261030-
/O.CAN.KLOT.FA.A.0005.000000T0000Z-250727T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-
Including the cities of Mundelein, McHenry, Algonquin, Crystal
Lake, Belvidere, Gurnee, Buffalo Grove, Rockford, Waukegan, and
Woodstock
422 AM CDT Sat Jul 26 2025
...FLOOD WATCH IS CANCELLED...
The Flash Flood Watch is cancelled for portions of north central and
northeast Illinois, including the following areas, in north central
Illinois, Boone and Winnebago. In northeast Illinois, Lake IL and
McHenry.
The flash flooding threat is higher to the south of this area. Brief
heavy rainfall does remain possible today. Therefore, the Flash
Flood Watch is being cancelled.
$$
ILZ008-010>013-019>021-103>108-INZ001-261730-
/O.CON.KLOT.FA.A.0005.000000T0000Z-250727T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Ogle-Lee-De Kalb-Kane-DuPage-La Salle-Kendall-Grundy-Northern
Cook-Central Cook-Southern Cook-Northern Will-Southern Will-
Eastern Will-Lake IN-
Including the cities of Yorkville, Coal City, Peotone,
Bolingbrook, Merrillville, Oregon, Park Forest, Mokena, Hammond,
Marseilles, Des Plaines, Joliet, Beecher, Cicero, Crete, Gary,
Byron, La Grange, Palatine, Aurora, Oak Lawn, Lombard, Rochelle,
La Salle, Orland Park, Carol Stream, Elgin, Channahon, Morris,
Schaumburg, Sycamore, Downers Grove, Wilmington, Naperville,
Dixon, Ottawa, Mendota, Northbrook, Plainfield, DeKalb, Streator,
Plano, Chicago, Minooka, Oak Park, Wheaton, Lemont, Oswego, Oak
Forest, Manhattan, Evanston, and Calumet City
422 AM CDT Sat Jul 26 2025
...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING...
* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE...Portions of Illinois, including the following areas, Cook,
De Kalb, DuPage, Will, Grundy, Kane, Kendall, La Salle, Lee,
Ogle,and northwest Indiana, including the following area, Lake IN.
* WHEN...Through this evening.
* IMPACTS...Creeks and streams may rise out of their banks. Flooding
may occur in poor drainage and urban areas. Underpasses may be
flooded. Roads and streets may be flooded. Storm drains and
ditches may be clogged with debris, increasing the risk of
flooding. Additionally, flooding of
basements may occur if thunderstorms train over urban areas.
* ADDITIONAL DETAILS...
- Additional waves of showers and thunderstorms will move into
northeast Illinois, including over areas that experienced
several inches of rain yesterday. The tropical-like airmass
will support rain rates in excess of 2 inches per hour in the
strongest thunderstorms, leading to a threat for flash
flooding.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the latest forecasts and be prepared to take quick action
should flooding develop.
&&
$$
Donofrio
Action: Continued Issued At: 2025-07-26 04:22:30
168
WGUS63 KLOT 260922
FFALOT
Flood Watch
National Weather Service Chicago IL
422 AM CDT Sat Jul 26 2025
ILZ003>006-261030-
/O.CAN.KLOT.FA.A.0005.000000T0000Z-250727T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-
Including the cities of Mundelein, McHenry, Algonquin, Crystal
Lake, Belvidere, Gurnee, Buffalo Grove, Rockford, Waukegan, and
Woodstock
422 AM CDT Sat Jul 26 2025
...FLOOD WATCH IS CANCELLED...
The Flash Flood Watch is cancelled for portions of north central and
northeast Illinois, including the following areas, in north central
Illinois, Boone and Winnebago. In northeast Illinois, Lake IL and
McHenry.
The flash flooding threat is higher to the south of this area. Brief
heavy rainfall does remain possible today. Therefore, the Flash
Flood Watch is being cancelled.
$$
ILZ008-010>013-019>021-103>108-INZ001-261730-
/O.CON.KLOT.FA.A.0005.000000T0000Z-250727T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Ogle-Lee-De Kalb-Kane-DuPage-La Salle-Kendall-Grundy-Northern
Cook-Central Cook-Southern Cook-Northern Will-Southern Will-
Eastern Will-Lake IN-
Including the cities of Yorkville, Coal City, Peotone,
Bolingbrook, Merrillville, Oregon, Park Forest, Mokena, Hammond,
Marseilles, Des Plaines, Joliet, Beecher, Cicero, Crete, Gary,
Byron, La Grange, Palatine, Aurora, Oak Lawn, Lombard, Rochelle,
La Salle, Orland Park, Carol Stream, Elgin, Channahon, Morris,
Schaumburg, Sycamore, Downers Grove, Wilmington, Naperville,
Dixon, Ottawa, Mendota, Northbrook, Plainfield, DeKalb, Streator,
Plano, Chicago, Minooka, Oak Park, Wheaton, Lemont, Oswego, Oak
Forest, Manhattan, Evanston, and Calumet City
422 AM CDT Sat Jul 26 2025
...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING...
* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE...Portions of Illinois, including the following areas, Cook,
De Kalb, DuPage, Will, Grundy, Kane, Kendall, La Salle, Lee,
Ogle,and northwest Indiana, including the following area, Lake IN.
* WHEN...Through this evening.
* IMPACTS...Creeks and streams may rise out of their banks. Flooding
may occur in poor drainage and urban areas. Underpasses may be
flooded. Roads and streets may be flooded. Storm drains and
ditches may be clogged with debris, increasing the risk of
flooding. Additionally, flooding of
basements may occur if thunderstorms train over urban areas.
* ADDITIONAL DETAILS...
- Additional waves of showers and thunderstorms will move into
northeast Illinois, including over areas that experienced
several inches of rain yesterday. The tropical-like airmass
will support rain rates in excess of 2 inches per hour in the
strongest thunderstorms, leading to a threat for flash
flooding.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the latest forecasts and be prepared to take quick action
should flooding develop.
&&
$$
Donofrio
Action: Continued Issued At: 2025-07-26 12:09:12
758
WGUS63 KLOT 261708
FFALOT
Flood Watch
National Weather Service Chicago IL
1208 PM CDT Sat Jul 26 2025
ILZ008-010>013-019>021-103>108-INZ001-270000-
/O.CON.KLOT.FA.A.0005.000000T0000Z-250727T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Ogle-Lee-De Kalb-Kane-DuPage-La Salle-Kendall-Grundy-Northern
Cook-Central Cook-Southern Cook-Northern Will-Southern Will-
Eastern Will-Lake IN-
Including the cities of Wilmington, Lombard, La Grange, Joliet,
Oregon, Oswego, La Salle, Ottawa, Byron, Des Plaines, Downers
Grove, Mokena, Peotone, Morris, Dixon, Crete, Yorkville, Oak
Lawn, Coal City, Oak Park, Park Forest, Merrillville,
Bolingbrook, Evanston, Wheaton, Cicero, Northbrook, Sycamore,
Gary, Hammond, Elgin, Naperville, Minooka, Schaumburg, Calumet
City, Channahon, Streator, Plainfield, Manhattan, Plano,
Rochelle, Beecher, Chicago, Oak Forest, Orland Park, Mendota,
DeKalb, Palatine, Carol Stream, Marseilles, Lemont, and Aurora
1208 PM CDT Sat Jul 26 2025
...FLOOD WATCH REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...
* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE...Portions of Illinois, including the following areas,
Central Cook, De Kalb, DuPage, Eastern Will, Grundy, Kane,
Kendall, La Salle, Lee, Northern Cook, Northern Will, Ogle,
Southern Cook and Southern Will and northwest Indiana, including
the following area, Lake IN.
* WHEN...Until 7 PM CDT this evening.
* IMPACTS...Creeks and streams may rise out of their banks. Flooding
may occur in poor drainage and urban areas. Underpasses may be
flooded. Roads and streets may be flooded. Storm drains and
ditches may be clogged with debris, increasing the risk of
flooding. Additionally, flooding of
basements may occur if thunderstorms train over urban areas.
* ADDITIONAL DETAILS...
- Scattered thunderstorms this afternoon may produce torrential
rainfall. The strongest thunderstorms will support rain rates
in excess of 2 inches per hour, leading to a threat for flash
flooding.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the latest forecasts and be prepared to take quick action
should flooding develop.
&&
$$
Action: Cancelled Issued At: 2025-07-26 14:24:14 605 WGUS63 KLOT 261924 FFALOT Flood Watch National Weather Service Chicago IL 224 PM CDT Sat Jul 26 2025 ILZ008-010>013-019>021-103>108-INZ001-262030- /O.CAN.KLOT.FA.A.0005.000000T0000Z-250727T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Ogle-Lee-De Kalb-Kane-DuPage-La Salle-Kendall-Grundy-Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will- Eastern Will-Lake IN- Including the cities of Wilmington, Lombard, La Grange, Joliet, Oregon, Oswego, La Salle, Ottawa, Byron, Des Plaines, Downers Grove, Mokena, Peotone, Morris, Dixon, Crete, Yorkville, Oak Lawn, Coal City, Oak Park, Park Forest, Merrillville, Bolingbrook, Evanston, Wheaton, Cicero, Northbrook, Sycamore, Gary, Hammond, Elgin, Naperville, Minooka, Schaumburg, Calumet City, Channahon, Streator, Plainfield, Manhattan, Plano, Rochelle, Beecher, Chicago, Oak Forest, Orland Park, Mendota, DeKalb, Palatine, Carol Stream, Marseilles, Lemont, and Aurora 224 PM CDT Sat Jul 26 2025 ...FLOOD WATCH IS CANCELLED... The Flash Flood Watch is cancelled for portions of Illinois, including the following areas, Central Cook, De Kalb, DuPage, Eastern Will, Grundy, Kane, Kendall, La Salle, Lee, Northern Cook, Northern Will, Ogle, Southern Cook and Southern Will and northwest Indiana, including the following area, Lake IN. Flooding is no longer expected to pose a threat. $$ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||