Garden Prairie Warnings, Watches and Advisories
NWS Active Alerts for IL - Map View
Flood Advisory
Lee, IL
Flood Advisory issued September 20 at 1:28PM CDT until September 20 at 7:30PM CDT by NWS Chicago IL
* WHAT...Flooding caused by excessive rainfall continues. * WHERE...Lee County in north central Illinois... * WHEN...Until 730 PM CDT Sunday. * IMPACTS...Creeks and streams may rise out of their banks. Slow moving or standing water may continue. High water likely may recede slowly from flooded areas. * ADDITIONAL DETAILS... - At 125 PM CDT, minor flooding continues in the advisory area after heavy rain due to thunderstorms early this morning. Between 2 and 5 inches of rain fell. - Though additional heavy rain is not expected, standing water and elevated creeks and streams will persist into this afternoon. A Flood Warning is also in effect along and near the Green River. - Some locations that will experience flooding include... Amboy, Paw Paw, Sublette, Woodhaven Lakes, Compton, West Brooklyn, Harmon and Lee Center. - http://www.weather.gov/safety/flood
Minor
Likely
Expected
September 20th, 2026 01:28:00 pm CDT
September 20th, 2026 01:28:00 pm CDT
September 20th, 2026 07:30:00 pm CDT
Flood Warning
Calhoun, IL; Pike, MO
Flood Warning issued September 20 at 11:48AM CDT by NWS St Louis MO
...The National Weather Service in St Louis has issued a Flood Warning for the following rivers in Missouri...Illinois... Mississippi River at Canton. Mississippi River at Clarksville. Mississippi River at Saverton. Mississippi River at LaGrange. Mississippi River at Hannibal. Mississippi River at Winfield. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at Clarksville. * WHEN...From Wednesday afternoon until further notice. * IMPACTS...At 29.0 feet, Water enters the parking lot entrance at the Clarksville Riverfront Park. * ADDITIONAL DETAILS... - At 11:30 AM CDT Sunday the stage was 17.8 feet. - Forecast...The river is expected to rise above flood stage early Wednesday afternoon and continue rising to a crest of 28.2 feet Friday morning. - Flood stage is 25.0 feet.
Severe
Likely
Expected
September 20th, 2026 11:48:00 am CDT
September 20th, 2026 11:48:00 am CDT
September 22nd, 2026 12:00:00 am CDT
Flood Warning
Calhoun, IL; Lincoln, MO
Flood Warning issued September 20 at 11:48AM CDT by NWS St Louis MO
...The National Weather Service in St Louis has issued a Flood Warning for the following rivers in Missouri...Illinois... Mississippi River at Canton. Mississippi River at Clarksville. Mississippi River at Saverton. Mississippi River at LaGrange. Mississippi River at Hannibal. Mississippi River at Winfield. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at Winfield. * WHEN...From Thursday afternoon until further notice. * IMPACTS...At 27.5 feet, At this stage, Lock and Dam 25 will stockpile 200 tons of sand, 12,000 sandbags, and 10,000 square feet of polyethylene plastic as a precaution. * ADDITIONAL DETAILS... - At 11:30 AM CDT Sunday the stage was 18.0 feet. - Forecast...The river is expected to rise above flood stage Thursday afternoon and continue rising to a crest of 27.4 feet Friday evening. - Flood stage is 26.0 feet.
Severe
Likely
Expected
September 20th, 2026 11:48:00 am CDT
September 20th, 2026 11:48:00 am CDT
September 22nd, 2026 12:00:00 am CDT
Flood Warning
Pike, IL; Ralls, MO
Flood Warning issued September 20 at 11:48AM CDT until September 27 at 9:00PM CDT by NWS St Louis MO
...The National Weather Service in St Louis has issued a Flood Warning for the following rivers in Missouri...Illinois... Mississippi River at Canton. Mississippi River at Clarksville. Mississippi River at Saverton. Mississippi River at LaGrange. Mississippi River at Hannibal. Mississippi River at Winfield. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at Saverton. * WHEN...From Wednesday afternoon to Sunday evening. * IMPACTS...At 15.5 feet, An access road to riverside raised homes on the riverward side of the Sny levee begins to flood near this level. * ADDITIONAL DETAILS... - At 10:00 AM CDT Sunday the stage was 7.7 feet. - Forecast...The river is expected to rise above flood stage early Wednesday afternoon to a crest of 18.2 feet early Friday morning. It will then fall below flood stage Saturday afternoon. - Flood stage is 16.0 feet.
Severe
Likely
Expected
September 20th, 2026 11:48:00 am CDT
September 20th, 2026 11:48:00 am CDT
September 22nd, 2026 12:00:00 am CDT
Flood Warning
Pike, IL; Marion, MO
Flood Warning issued September 20 at 11:48AM CDT until September 27 at 1:00PM CDT by NWS St Louis MO
...The National Weather Service in St Louis has issued a Flood Warning for the following rivers in Missouri...Illinois... Mississippi River at Canton. Mississippi River at Clarksville. Mississippi River at Saverton. Mississippi River at LaGrange. Mississippi River at Hannibal. Mississippi River at Winfield. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at Hannibal. * WHEN...From Wednesday evening to Sunday afternoon. * IMPACTS...At 18.0 feet, The northern end of Southside Recreation #2 Park along Bear Creek begins flooding at this height. Gate wells are shut down to prevent the sewers from backing up. Also at this level pumps are set to standby. * ADDITIONAL DETAILS... - At 11:15 AM CDT Sunday the stage was 11.6 feet. - Forecast...The river is expected to rise above flood stage late Wednesday evening to a crest of 18.2 feet early Friday morning. It will then fall below flood stage Saturday morning. - Flood stage is 17.0 feet.
Severe
Likely
Expected
September 20th, 2026 11:48:00 am CDT
September 20th, 2026 11:48:00 am CDT
September 22nd, 2026 12:00:00 am CDT
Flood Warning
Adams, IL; Lewis, MO
Flood Warning issued September 20 at 11:48AM CDT until September 27 at 12:00PM CDT by NWS St Louis MO
...The National Weather Service in St Louis has issued a Flood Warning for the following rivers in Missouri...Illinois... Mississippi River at Canton. Mississippi River at Clarksville. Mississippi River at Saverton. Mississippi River at LaGrange. Mississippi River at Hannibal. Mississippi River at Winfield. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at Canton. * WHEN...From Wednesday morning to Sunday afternoon. * IMPACTS...At 16.6 feet, Front Street leading to the campground and Corps park campgrounds flood at this height. * ADDITIONAL DETAILS... - At 10:00 AM CDT Sunday the stage was 7.0 feet. - Forecast...The river is expected to rise above flood stage late Wednesday morning to a crest of 16.6 feet Thursday evening. It will then fall below flood stage early Saturday morning. - Flood stage is 15.0 feet.
Severe
Likely
Expected
September 20th, 2026 11:48:00 am CDT
September 20th, 2026 11:48:00 am CDT
September 22nd, 2026 12:00:00 am CDT
Flood Warning
Adams, IL; Lewis, MO
Flood Warning issued September 20 at 11:48AM CDT until September 27 at 3:00AM CDT by NWS St Louis MO
...The National Weather Service in St Louis has issued a Flood Warning for the following rivers in Missouri...Illinois... Mississippi River at Canton. Mississippi River at Clarksville. Mississippi River at Saverton. Mississippi River at LaGrange. Mississippi River at Hannibal. Mississippi River at Winfield. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at LaGrange. * WHEN...From Wednesday evening to late Saturday night. * IMPACTS...At 18.0 feet, The entrance to the lower parking lot at the Mark Twain Casino begins flooding near this height, requiring the use of an alternate entrance. * ADDITIONAL DETAILS... - At 11:00 AM CDT Sunday the stage was 8.6 feet. - Forecast...The river is expected to rise above flood stage Wednesday evening to a crest of 17.9 feet early Thursday afternoon. It will then fall below flood stage Friday evening. - Flood stage is 17.0 feet.
Severe
Likely
Expected
September 20th, 2026 11:48:00 am CDT
September 20th, 2026 11:48:00 am CDT
September 22nd, 2026 12:00:00 am CDT
Flood Watch
Hancock; Clark
Flood Watch issued September 20 at 11:44AM CDT until September 26 at 2:00PM CDT by NWS Quad Cities IA IL
...The Flood Watch continues for the following rivers in Missouri... Illinois... Mississippi River at Gregory Landing affecting Hancock and Clark Counties. * WHAT...Flooding is possible. * WHERE...Mississippi River at Gregory Landing. * WHEN...From Tuesday afternoon to Saturday afternoon. * ADDITIONAL DETAILS... - At 11:30 AM CDT Sunday the stage was 7.8 feet and steady. - Forecast...Rises on the river are likely through the first half of this week. The river may reach flood stage. - Flood stage is 15.0 feet.
Severe
Possible
Future
September 20th, 2026 11:44:00 am CDT
September 20th, 2026 11:44:00 am CDT
September 21st, 2026 11:45:00 am CDT
Flood Watch
Muscatine; Scott; Rock Island
Flood Watch issued September 20 at 11:26AM CDT until September 24 at 9:00AM CDT by NWS Quad Cities IA IL
...The Flood Watch continues for the following rivers in Illinois... Iowa... Mississippi River at Rock Island LD15 affecting Rock Island, Scott and Muscatine zones. .Rainfall that fell Saturday night into early this morning was aligned more with tributaries that flow into the Mississippi south of the Quad Cities. This has resulted in a lower forecast for the Mississippi River in this area. Observational trends will continue to be monitored through this afternoon and evening, and may result in the Watch being cancelled this evening. * WHAT...Flooding is possible. * WHERE...Mississippi River at Rock Island LD15. * WHEN...From Monday evening to Thursday morning. * ADDITIONAL DETAILS... - At 11:00 AM CDT Sunday the stage was 9.5 feet and slowly rising. - Forecast...Rises on the river will continue through at least Monday night. The river may reach flood stage, but is less likely to do so than forecasts from 24 hours ago. - Flood stage is 15.0 feet.
Severe
Possible
Future
September 20th, 2026 11:26:00 am CDT
September 20th, 2026 11:26:00 am CDT
September 21st, 2026 11:30:00 am CDT
Flood Watch
Des Moines; Henderson
Flood Watch issued September 20 at 11:18AM CDT until September 26 at 4:00AM CDT by NWS Quad Cities IA IL
...The Flood Watch continues for the following rivers in Illinois... Iowa... Mississippi River at Keithsburg affecting Louisa, Des Moines, Mercer and Henderson Counties. Mississippi River at Gladstone LD18 affecting Des Moines and Henderson Counties. Mississippi River at Burlington affecting Hancock, Des Moines, Lee and Henderson Counties. .Additional rainfall from today through Monday night is expected to be considerably lighter than what fell Thursday through Saturday night. This helps provide higher confidence in these river forecasts compared to 24 hours ago. * WHAT...Flooding is possible. * WHERE...Mississippi River at Gladstone LD18. * WHEN...From late Tuesday night to late Friday night. * ADDITIONAL DETAILS... - At 11:00 AM CDT Sunday the stage was 4.7 feet and rising. - Forecast...Flood stage may be reached early Wednesday morning. - Flood stage is 10.0 feet.
Severe
Possible
Future
September 20th, 2026 11:18:00 am CDT
September 20th, 2026 11:18:00 am CDT
September 21st, 2026 11:30:00 am CDT
Flood Watch
Louisa; Des Moines; Mercer; Henderson
Flood Watch issued September 20 at 11:18AM CDT until September 25 at 10:00AM CDT by NWS Quad Cities IA IL
...The Flood Watch continues for the following rivers in Illinois... Iowa... Mississippi River at Keithsburg affecting Louisa, Des Moines, Mercer and Henderson Counties. Mississippi River at Gladstone LD18 affecting Des Moines and Henderson Counties. Mississippi River at Burlington affecting Hancock, Des Moines, Lee and Henderson Counties. .Additional rainfall from today through Monday night is expected to be considerably lighter than what fell Thursday through Saturday night. This helps provide higher confidence in these river forecasts compared to 24 hours ago. * WHAT...Flooding is possible. * WHERE...Mississippi River at Keithsburg. * WHEN...From Tuesday evening to Friday morning. * ADDITIONAL DETAILS... - At 10:30 AM CDT Sunday the stage was 8.9 feet and rising. - Forecast...Flood stage may be reached late Tuesday evening. - Flood stage is 14.0 feet.
Severe
Possible
Future
September 20th, 2026 11:18:00 am CDT
September 20th, 2026 11:18:00 am CDT
September 21st, 2026 11:30:00 am CDT
Flood Watch
Des Moines; Lee; Henderson; Hancock
Flood Watch issued September 20 at 11:18AM CDT until September 25 at 1:00PM CDT by NWS Quad Cities IA IL
...The Flood Watch continues for the following rivers in Illinois... Iowa... Mississippi River at Keithsburg affecting Louisa, Des Moines, Mercer and Henderson Counties. Mississippi River at Gladstone LD18 affecting Des Moines and Henderson Counties. Mississippi River at Burlington affecting Hancock, Des Moines, Lee and Henderson Counties. .Additional rainfall from today through Monday night is expected to be considerably lighter than what fell Thursday through Saturday night. This helps provide higher confidence in these river forecasts compared to 24 hours ago. * WHAT...Flooding is possible. * WHERE...Mississippi River at Burlington. * WHEN...From Wednesday morning to Friday afternoon. * ADDITIONAL DETAILS... - At 10:00 AM CDT Sunday the stage was 10.0 feet and rising. - Forecast...Flood stage may be reached late Wednesday morning. - Flood stage is 15.0 feet.
Severe
Possible
Future
September 20th, 2026 11:18:00 am CDT
September 20th, 2026 11:18:00 am CDT
September 21st, 2026 11:30:00 am CDT
Beach Hazards Statement
Lake; Northern Cook; Central Cook
Beach Hazards Statement issued September 20 at 10:23AM CDT until September 22 at 7:00PM CDT by NWS Chicago IL
* WHAT...High wave action and dangerous currents expected at Lake Michigan beaches. Waves 7 to 10 ft expected. * WHERE...Lake IL, Northern Cook and Central Cook Counties. * WHEN...Through Tuesday evening. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers.
Moderate
Likely
Expected
September 20th, 2026 10:23:00 am CDT
September 20th, 2026 10:23:00 am CDT
September 20th, 2026 06:30:00 pm CDT
Flood Watch
Bureau; Putnam; La Salle
Flood Watch issued September 20 at 10:20AM CDT until September 23 at 10:00AM CDT by NWS Chicago IL
...The National Weather Service in Chicago has issued a Flood Watch for the following rivers in Illinois... Illinois River at La Salle affecting Putnam, La Salle and Bureau counties. For the Illinois River (Upper)...including Morris, Ottawa, La Salle...flooding is possible. * WHAT...Flooding is possible. * WHERE...Illinois River from Starved Rock Lock and Dam downstream to confluence with Big Bureau Creek, including the La Salle gauge. * WHEN...From Monday morning to Wednesday morning. * ADDITIONAL DETAILS... - At 9:45 AM CDT Sunday the stage was 13.4 feet. - Forecast...Flood stage may be reached Monday afternoon. - Flood stage is 20.0 feet. - http://www.weather.gov/safety/flood
Severe
Possible
Future
September 20th, 2026 10:20:00 am CDT
September 20th, 2026 10:20:00 am CDT
September 21st, 2026 04:30:00 am CDT
Flood Warning
Lee, IL
Flood Warning issued September 20 at 10:10AM CDT until September 20 at 7:15PM CDT by NWS Chicago IL
* WHAT...Flooding caused by excessive rainfall on the Green River and nearby tributaries. * WHERE...Lee County in north central Illinois... * WHEN...Until 715 PM CDT Sunday. * IMPACTS...Area creeks and streams are already elevated, with additional rises possible, especially with any additional rainfall. * ADDITIONAL DETAILS... - At 958 AM CDT, law enforcement and emergency management reported that water from area fields and small creeks continues to flow through Green River basin after heavy rain in the warned area early this morning. Flooding is already occurring, with rises on the Green River possible this afternoon. - Additional rain is expected, with localized amounts up to 0.5 inches possible through this afternoon. - Some locations that will experience flooding include... Amboy. - http://www.weather.gov/safety/flood
Severe
Likely
Expected
September 20th, 2026 10:10:00 am CDT
September 20th, 2026 10:10:00 am CDT
September 20th, 2026 07:15:00 pm CDT
Flood Warning
Cook, IL; Lake, IN
Flood Warning issued September 20 at 9:45AM CDT until September 21 at 1:00AM CDT by NWS Chicago IL
...The Flood Warning continues for the following rivers in Illinois...Indiana... Little Calumet River at Munster (Hohman Avenue) affecting Lake IN and Cook Counties. For the Little Calumet River...including South Holland, Munster (Hohman Avenue)...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Little Calumet River from IN-912 in Hammond downstream to confluence with Thorn Creek in South Holland, including the Munster (Hohman Avenue) gauge. * WHEN...Until late tonight. * IMPACTS...At 12.5 feet, Most areas outside of the levee-protected area are inundated in Hammond and Munster. * ADDITIONAL DETAILS... - At 9:00 AM CDT Sunday the stage was 9.3 feet. - Forecast...The river is expected to briefly rise and crest to around flood stage of 12.0 feet late this afternoon into early evening. It will then fall below flood stage late this evening. - Flood stage is 12.0 feet. - http://www.weather.gov/safety/flood
Severe
Observed
Immediate
September 20th, 2026 09:45:00 am CDT
September 20th, 2026 09:45:00 am CDT
September 21st, 2026 01:00:00 am CDT
Flood Warning
Lake, IL; Kenosha, WI
Flood Warning issued September 20 at 9:35AM CDT until September 23 at 3:00PM CDT by NWS Milwaukee/Sullivan WI
...The National Weather Service in Milwaukee/Sullivan has issued a Flood Warning for the following rivers in Illinois...Wisconsin... Fox River Lower Near New Munster affecting Kenosha and Lake Counties. * WHAT...Minor flooding is forecast. * WHERE...Fox River Lower near New Munster. * WHEN...From this evening to Wednesday afternoon. * IMPACTS...At 12.0 feet, Water is up to the first floor levels of some homes in the Town of Wheatland, Silver Lake and Village of Salem Lakes area along Riverside Drive and Shorewood Drive. Hoosier Creek Rd floods. * ADDITIONAL DETAILS... - At 9:00 AM CDT Sunday the stage was 9.8 feet. - Bankfull stage is 10.0 feet. - Forecast...The river is expected to rise above flood stage this evening to a crest of 11.9 feet early tomorrow afternoon. It will then fall below flood stage late Wednesday morning. - Flood stage is 11.0 feet. - Flood History...This crest compares to a previous crest of 11.7 feet on 05/10/2019. - http://www.weather.gov/safety/flood
Severe
Likely
Expected
September 20th, 2026 09:35:00 am CDT
September 20th, 2026 09:35:00 am CDT
September 20th, 2026 09:45:00 pm CDT
Flood Warning
La Salle, IL
Flood Warning issued September 20 at 9:28AM CDT until September 23 at 1:00AM CDT by NWS Chicago IL
...The Flood Warning is extended for the following rivers in Illinois... Fox River at Dayton affecting La Salle County. * WHAT...Moderate flooding is forecast. * WHERE...Fox River from Millington downstream to confluence with the Illinois River, including the Dayton gauge. * WHEN...From this afternoon to late Tuesday night. * IMPACTS...At 14.5 feet, Low-lying agricultural land inundated near Norway. * ADDITIONAL DETAILS... - At 8:45 AM CDT Sunday the stage was 9.6 feet. - Forecast...The river is expected to rise above flood stage this afternoon to a crest of 14.9 feet Monday morning. It will then fall below flood stage Tuesday afternoon. - Flood stage is 12.0 feet. - http://www.weather.gov/safety/flood
Severe
Observed
Immediate
September 20th, 2026 09:28:00 am CDT
September 20th, 2026 09:28:00 am CDT
September 21st, 2026 03:30:00 am CDT
Flood Watch
Northern Will; Southern Will
Flood Watch issued September 20 at 9:28AM CDT until September 21 at 7:00PM CDT by NWS Chicago IL
...The Flood Watch is extended for the following rivers in Illinois... Du Page River at Shorewood affecting Will County. For the Du Page River...including Shorewood...flooding is possible. * WHAT...Flooding is possible. * WHERE...Du Page River from IL-59 in Plainfield downstream to confluence with Des Plaines River, including the Shorewood gauge. * WHEN...From late this afternoon to Monday evening. * IMPACTS...At 16.0 feet, Clark Drive threatened in Shorewood. * ADDITIONAL DETAILS... - At 8:45 AM CDT Sunday the stage was 13.8 feet. - Forecast...Flood stage may be reached based on the latest forecast information. - Flood stage is 15.5 feet. - http://www.weather.gov/safety/flood
Severe
Possible
Future
September 20th, 2026 09:28:00 am CDT
September 20th, 2026 09:28:00 am CDT
September 21st, 2026 03:30:00 am CDT
Flood Warning
Henry, IL; Rock Island, IL
Flood Warning issued September 20 at 9:23AM CDT until September 25 at 6:00AM CDT by NWS Quad Cities IA IL
...The National Weather Service in Quad Cities has issued a Flood Warning for the following rivers in Illinois... Rock River near Joslin affecting Rock Island, Whiteside and Henry IL Counties. Rock River at Moline affecting Rock Island and Henry IL Counties. .Additional rainfall from today through Monday night is expected to be considerably lighter than what fell Thursday through Saturday night. This helps provide higher confidence in these river forecasts. ...REPLACES RIVER FLOOD WATCH... * WHAT...Moderate flooding is forecast. * WHERE...Rock River at Moline. * WHEN...From Monday evening to Friday morning. * IMPACTS...At 13.2 feet, water affects 60th Street south of John Deere Road in Moline and 56th Ave from Green Valley Park 48th St. Water is on Canal Road in Big Island. Smith's Island is affected by flood waters. * ADDITIONAL DETAILS... - At 8:30 AM CDT Sunday the stage was 9.5 feet and rising. - Forecast...The river is expected to rise above flood stage Monday evening to a crest of 13.6 feet Tuesday evening. It will then fall below flood stage late Thursday evening. - Flood stage is 12.0 feet.
Severe
Likely
Expected
September 20th, 2026 09:23:00 am CDT
September 20th, 2026 09:23:00 am CDT
September 21st, 2026 09:30:00 am CDT
Flood Warning
Henry, IL; Rock Island, IL; Whiteside, IL
Flood Warning issued September 20 at 9:23AM CDT until September 24 at 2:00AM CDT by NWS Quad Cities IA IL
...The National Weather Service in Quad Cities has issued a Flood Warning for the following rivers in Illinois... Rock River near Joslin affecting Rock Island, Whiteside and Henry IL Counties. Rock River at Moline affecting Rock Island and Henry IL Counties. .Additional rainfall from today through Monday night is expected to be considerably lighter than what fell Thursday through Saturday night. This helps provide higher confidence in these river forecasts. ...REPLACES RIVER FLOOD WATCH... * WHAT...Minor flooding is forecast. * WHERE...Rock River near Joslin. * WHEN...From Monday afternoon to late Wednesday night. * IMPACTS...At 13.0 feet, Flooding of unprotected agricultural land occurs. Water also affects Lundeens Landing Campground. * ADDITIONAL DETAILS... - At 8:45 AM CDT Sunday the stage was 7.3 feet and rising. - Forecast...The river is expected to rise above flood stage early Monday afternoon to a crest of 13.3 feet Tuesday afternoon. It will then fall below flood stage Wednesday afternoon. - Flood stage is 12.0 feet.
Severe
Likely
Expected
September 20th, 2026 09:23:00 am CDT
September 20th, 2026 09:23:00 am CDT
September 21st, 2026 09:30:00 am CDT
Flood Watch
Lake
Flood Watch issued September 20 at 9:14AM CDT until September 25 at 4:00AM CDT by NWS Chicago IL
...The Flood Watch is replaced with a River Flood Warning for the following rivers in Illinois... Des Plaines River near Russell affecting Lake County. ...The Flood Watch continues for the following rivers in Illinois... Des Plaines River near Gurnee affecting Lake County. ...The Flood Watch is has been cancelled for the following rivers in Illinois... Des Plaines River at Lincolnshire affecting Lake and Cook County. Des Plaines River near Des Plaines affecting Cook County. Des Plaines River at Riverside affecting Cook County. * WHAT...Flooding is possible. * WHERE...Des Plaines River from US-41 in Gurnee downstream to Townline Road in Vernon Hills, including the Gurnee gauge. * WHEN...Until late Thursday night. * ADDITIONAL DETAILS... - At 8:30 AM CDT Sunday the stage was 5.2 feet. - Forecast...Flood stage may be reached early Monday afternoon. - Flood stage is 7.0 feet. - http://www.weather.gov/safety/flood
Severe
Possible
Future
September 20th, 2026 09:14:00 am CDT
September 20th, 2026 09:14:00 am CDT
September 21st, 2026 03:15:00 am CDT
Flood Warning
Lake, IL
Flood Warning issued September 20 at 9:14AM CDT by NWS Chicago IL
...The National Weather Service in Chicago has issued a Flood Warning for the following rivers in Illinois... Des Plaines River near Russell affecting Lake County. * WHAT...Minor flooding is forecast. * WHERE...Des Plaines River from IL/WI state line downstream to US-41 in Gurnee, including the Russell gauge. * WHEN...From this afternoon until further notice. * IMPACTS...At 8.0 feet, Agricultural and park land is inundated near the river. Residential property is threatened near the river. * ADDITIONAL DETAILS... - At 8:30 AM CDT Sunday the stage was 6.5 feet. - Forecast...The river is expected to rise above flood stage late this afternoon to a crest of 8.2 feet early Tuesday morning. - Flood stage is 7.0 feet. - http://www.weather.gov/safety/flood
Severe
Likely
Expected
September 20th, 2026 09:14:00 am CDT
September 20th, 2026 09:14:00 am CDT
September 21st, 2026 03:15:00 am CDT
Heat Advisory
Jefferson; Wayne; Edwards; Wabash; Perry; Franklin; Hamilton; White; Jackson; Williamson; Saline; Gallatin; Union; Johnson; Pope; Hardin; Alexander; Pulaski; Massac; Gibson; Pike; Posey; Vanderburgh; Warrick; Spencer; Fulton; Hickman; Carlisle; Ballard; McCracken; Graves; Livingston; Marshall; Calloway; Crittenden; Lyon; Trigg; Caldwell; Union; Webster; Hopkins; Christian; Henderson; Daviess; McLean; Muhlenberg; Todd; Perry; Bollinger; Cape Girardeau; Wayne; Carter; Ripley; Butler; Stoddard; Scott; Mississippi; New Madrid
Heat Advisory issued September 20 at 4:20AM CDT until September 20 at 7:00PM CDT by NWS Paducah KY
* WHAT...Heat index values up to 102 degrees are expected. * WHERE...all of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri. * WHEN...Until 7 PM CDT /8 PM EDT/ this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Moderate
Likely
Expected
September 20th, 2026 04:20:00 am CDT
September 20th, 2026 04:20:00 am CDT
September 20th, 2026 07:00:00 pm CDT
Flood Watch
Louisa; Mercer
Flood Watch issued September 19 at 10:12PM CDT until September 25 at 1:00PM CDT by NWS Quad Cities IA IL
...The National Weather Service in Quad Cities has issued a Flood Watch for the following rivers in Illinois...Iowa...Missouri... Mississippi River at Rock Island LD15 affecting Scott, Muscatine and Rock Island zones. Mississippi River at Muscatine affecting Mercer, Muscatine, Rock Island and Louisa Counties. Mississippi River at New Boston LD17 affecting Mercer and Louisa Counties. Mississippi River at Gladstone LD18 affecting Des Moines and Henderson Counties. Mississippi River at Keithsburg affecting Henderson, Des Moines, Louisa and Mercer Counties. Mississippi River at Ill. City LD16 affecting Muscatine and Rock Island zones. Mississippi River at Burlington affecting Hancock, Des Moines, Henderson and Lee Counties. Mississippi River at Gregory Landing affecting Hancock and Clark Counties. * WHAT...Flooding is possible. * WHERE...Mississippi River at New Boston LD17. * WHEN...From late Monday night to Friday afternoon. * ADDITIONAL DETAILS... - At 9:10 PM CDT Saturday the stage was 7.2 feet. - Forecast...Flood stage may be reached early Tuesday morning. - Flood stage is 15.0 feet.
Severe
Possible
Future
September 19th, 2026 10:12:00 pm CDT
September 19th, 2026 10:12:00 pm CDT
September 20th, 2026 10:15:00 pm CDT
SAFETY and DATA MESSAGE
When a severe thunderstorm warning is issued, the storm may produce damaging winds, large hail, dangerous lightning, and heavy rain. In some cases, heavy rainfall produced by a severe storm can also lead to flash flooding. Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.
Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Garden Prairie.
Use the Radar Maps link provided to understand the trajectory of a storm.
For more official information about severe storms and how to stay safe, visit the National Weather Service's Severe Thunderstorm Safety page. We encourage you to also monitor Excessive Rainfall Forecasts on their Weather Prediction Center website.