Weather Warnings for Illinois

Issued by the National Weather Service

Current watches, warnings, and advisories for Illinois
Alerts Updated: April 11, 2026, 9:03 am  UTC


Flood Watch issued April 11 at 4:02AM CDT until April 12 at 1:00PM CDT by NWS Milwaukee/Sullivan WI

Summary: ...The Flood Watch continues for the following rivers in Illinois... Wisconsin... Fox River Lower Near New Munster affecting Kenosha and Lake Counties. * WHAT...Flooding is possible. * WHERE...Fox River Lower near New Munster. * WHEN...Until early tomorrow afternoon. * IMPACTS...At 11.0 feet, Floodwaters begin to affect 77th St. in the Town of Wheatland. Floodwaters are near some homes along Riverside Dr, Shorewood Dr, and Highway W in the Village of Salem Lakes and Town of Wheatland areas. Fox River Park boat launch starts to flood. * ADDITIONAL DETAILS... - At 3:00 AM CDT Saturday the stage was 10.7 feet. - Forecast...Flood stage may be reached just after midnight tonight. - Flood stage is 11.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 11, 2026, 4:02 am      Expires:  April 11, 2026, 12:15 pm
Area:  Lake, IL; Kenosha, WI


Flood Warning issued April 10 at 10:01PM CDT by NWS St Louis MO

Summary: ...The Flood Warning continues for the following rivers in Missouri...Illinois... Mississippi River at Clarksville. Mississippi River at Louisiana. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River at Clarksville. * WHEN...Until further notice. * IMPACTS...At 25.5 feet, State Route P east of Elsberry begins flooding just east of the levee. * ADDITIONAL DETAILS... - At 9:30 PM CDT Friday the stage was 25.3 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 PM CDT Friday was 25.3 feet. - Forecast...The river is expected to rise to a crest of 26.0 feet early Monday afternoon. - Flood stage is 25.0 feet.
Severity:  Severe    Effective:  April 10, 2026, 10:01 pm      Expires:  April 12, 2026, 10:15 am
Area:  Calhoun, IL; Pike, MO


Flood Warning issued April 10 at 10:01PM CDT by NWS St Louis MO

Summary: ...The Flood Warning continues for the following rivers in Missouri...Illinois... Mississippi River at Clarksville. Mississippi River at Louisiana. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River at Louisiana. * WHEN...Until further notice. * IMPACTS...At 15.0 feet, The first quarter mile of Edison Avenue beyond the railroad tracks begins flooding near this height. * ADDITIONAL DETAILS... - At 9:30 PM CDT Friday the stage was 15.3 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 PM CDT Friday was 15.3 feet. - Forecast...The river is expected to rise to a crest of 15.8 feet early Monday afternoon. - Flood stage is 15.0 feet.
Severity:  Severe    Effective:  April 10, 2026, 10:01 pm      Expires:  April 12, 2026, 10:15 am
Area:  Pike, IL; Pike, MO


Flood Warning issued April 10 at 10:43PM EDT until April 12 at 6:48AM EDT by NWS Indianapolis IN

Summary: ...The Flood Warning continues for the following rivers in Indiana... Illinois... Wabash River at Montezuma, Terre Haute, Hutsonville Legacy Power Plant Site, and Riverton. .Lowland flooding will continue along a part of the Wabash River in western Indiana this weekend, and likely conclude by noon Monday. The crest late Friday evening was in the vicinity of Riverton. Flooding ended at Lafayette and Covington earlier today. Rain chances Sunday night through the end of the week ahead could bring additional rises to area rivers. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Wabash River at Terre Haute. * WHEN...Until Sunday morning. * IMPACTS...At 17.5 feet, A few sloughs and a drainage have water in them in the vicinity of SR 63 on the west side of the Wabash River. * ADDITIONAL DETAILS... - At 9:30 PM EDT Friday /8:30 PM CDT Friday/ the stage was 17.8 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 PM EDT Friday /8:30 PM CDT Friday/ was 18.9 feet. - Forecast...The river is expected to fall below flood stage tomorrow evening and continue falling and remain below flood stage. - Flood stage is 16.5 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 10, 2026, 10:43 pm      Expires:  April 11, 2026, 3:00 pm
Area:  Clark, IL; Crawford, IL; Sullivan, IN; Vigo, IN


Flood Warning issued April 10 at 10:43PM EDT until April 13 at 6:17PM EDT by NWS Indianapolis IN

Summary: ...The Flood Warning continues for the following rivers in Indiana... Illinois... Wabash River at Montezuma, Terre Haute, Hutsonville Legacy Power Plant Site, and Riverton. .Lowland flooding will continue along a part of the Wabash River in western Indiana this weekend, and likely conclude by noon Monday. The crest late Friday evening was in the vicinity of Riverton. Flooding ended at Lafayette and Covington earlier today. Rain chances Sunday night through the end of the week ahead could bring additional rises to area rivers. * WHAT...Minor flooding is forecast. * WHERE...Wabash River at Hutsonville Legacy Power Plant Site. * WHEN...Until Monday evening. * IMPACTS...At 20.0 feet, Leaverton Park in Palestine and park in Hutsonville begin to flood. Agricultural flooding spreads to higher land. Seep water is noticeable behind levees. Some elevated river cottages are surrounded by water. Several county or township roads east of Lincoln Heritage Trail between Palestine and Hutsonville in Crawford County Illinois are impassable. * ADDITIONAL DETAILS... - There is no current observed data. - Forecast...The river is expected to fall below flood stage Monday morning and continue falling and remain below flood stage. - Flood stage is 16.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 10, 2026, 10:43 pm      Expires:  April 11, 2026, 3:00 pm
Area:  Crawford, IL; Lawrence, IL; Knox, IN; Sullivan, IN


Flood Warning issued April 10 at 10:43PM EDT until April 13 at 8:45PM EDT by NWS Indianapolis IN

Summary: ...The Flood Warning continues for the following rivers in Indiana... Illinois... Wabash River at Montezuma, Terre Haute, Hutsonville Legacy Power Plant Site, and Riverton. .Lowland flooding will continue along a part of the Wabash River in western Indiana this weekend, and likely conclude by noon Monday. The crest late Friday evening was in the vicinity of Riverton. Flooding ended at Lafayette and Covington earlier today. Rain chances Sunday night through the end of the week ahead could bring additional rises to area rivers. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Wabash River at Riverton. * WHEN...Until Monday evening. * IMPACTS...At 18.0 feet, Extensive lowland flooding is in progress. High water surrounds many river cabins. Access to most river cabins is by boat only. Levees begin to protect farmland. Extensive flooding of Leaverton Park occurs in Palestine, Illinois. * ADDITIONAL DETAILS... - At 10:00 PM EDT Friday /9:00 PM CDT Friday/ the stage was 18.1 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 PM EDT Friday /9:00 PM CDT Friday/ was 18.1 feet. - Forecast...The river is expected to fall below flood stage Monday morning and continue falling and remain below flood stage. - Flood stage is 15.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 10, 2026, 10:43 pm      Expires:  April 11, 2026, 3:00 pm
Area:  Crawford, IL; Lawrence, IL; Knox, IN; Sullivan, IN


Flood Watch issued April 10 at 9:29PM CDT until April 16 at 7:00PM CDT by NWS Quad Cities IA IL

Summary: ...The Flood Watch is extended for the following rivers in Illinois...Iowa... Mississippi River at Burlington affecting Lee, Des Moines, Henderson and Hancock Counties. ...The Flood Watch continues for the following rivers in Illinois... Iowa... Mississippi River at Gladstone LD18 affecting Henderson and Des Moines Counties. * WHAT...Flooding is possible. * WHERE...Mississippi River at Burlington. * WHEN...From Monday evening to Thursday evening. * IMPACTS...At 15.0 feet, Agricultural flooding occurs. * ADDITIONAL DETAILS... - At 9:00 PM CDT Friday the stage was 14.6 feet. - Forecast...Flood stage may be reached Monday evening. - Flood stage is 15.0 feet.
Severity:  Severe    Effective:  April 10, 2026, 9:29 pm      Expires:  April 11, 2026, 9:30 pm
Area:  Des Moines; Lee; Henderson; Hancock


Flood Watch issued April 10 at 9:29PM CDT until April 17 at 7:00PM CDT by NWS Quad Cities IA IL

Summary: ...The Flood Watch is extended for the following rivers in Illinois...Iowa... Mississippi River at Burlington affecting Lee, Des Moines, Henderson and Hancock Counties. ...The Flood Watch continues for the following rivers in Illinois... Iowa... Mississippi River at Gladstone LD18 affecting Henderson and Des Moines Counties. * WHAT...Flooding is possible. * WHERE...Mississippi River at Gladstone LD18. * WHEN...From Monday evening to Friday, April 17. * ADDITIONAL DETAILS... - At 9:00 PM CDT Friday the stage was 9.7 feet. - Forecast...Flood stage may be reached Monday evening. - Flood stage is 10.0 feet.
Severity:  Severe    Effective:  April 10, 2026, 9:29 pm      Expires:  April 11, 2026, 9:30 pm
Area:  Des Moines; Henderson


Flood Warning issued April 10 at 9:09PM CDT by NWS Lincoln IL

Summary: ...The Flood Warning continues for the following rivers in Illinois... Illinois River near Havana affecting Cass, Mason and Fulton Counties. Illinois River at Beardstown affecting Cass, Morgan, Schuyler and Brown Counties. .The following forecasts are based on observed precipitation, soil moisture conditions, and forecast precipitation. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Illinois River near Havana. * WHEN...Until further notice. * IMPACTS...At 14.0 feet, Minor flooding begins to agricultural areas not protected by levees. * ADDITIONAL DETAILS... - At 8:45 PM CDT Friday the stage was 15.8 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:45 PM CDT Friday was 15.9 feet. - Forecast...The river is expected to fall to 14.5 feet Friday, April 17. - Flood stage is 14.0 feet.
Severity:  Severe    Effective:  April 10, 2026, 9:09 pm      Expires:  April 11, 2026, 1:15 pm
Area:  Cass, IL; Fulton, IL; Mason, IL


Flood Warning issued April 10 at 9:09PM CDT by NWS Lincoln IL

Summary: ...The Flood Warning continues for the following rivers in Illinois... Illinois River near Havana affecting Cass, Mason and Fulton Counties. Illinois River at Beardstown affecting Cass, Morgan, Schuyler and Brown Counties. .The following forecasts are based on observed precipitation, soil moisture conditions, and forecast precipitation. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Illinois River at Beardstown. * WHEN...Until further notice. * IMPACTS...At 14.4 feet, Seepage problems begin in the Coal Creek Drainage and Levee District. * ADDITIONAL DETAILS... - At 8:45 PM CDT Friday the stage was 15.2 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:45 PM CDT Friday was 15.2 feet. - Forecast...The river is expected to rise to a crest of 15.2 feet just after midnight tonight. - Flood stage is 14.0 feet.
Severity:  Severe    Effective:  April 10, 2026, 9:09 pm      Expires:  April 11, 2026, 1:15 pm
Area:  Brown, IL; Cass, IL; Morgan, IL; Schuyler, IL


Flood Warning issued April 10 at 9:04PM CDT by NWS Chicago IL

Summary: ...The Flood Warning continues for the following rivers in Illinois... Fox River at Algonquin Lock & Dam tailwater affecting McHenry, Lake IL and Kane Counties. For the Fox River (Illinois)...including Algonquin Lock & Dam tailwater...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Fox River from Johnsburg downstream to Red Gate Road in St. Charles, including the Algonquin Lock & Dam tailwater gauge. * WHEN...Until further notice. * IMPACTS...At 10.0 feet, Winaki Trail and Onaway Trail are threatened south of Algonquin. Athletic fields inundated at Judson College in Elgin. * ADDITIONAL DETAILS... - At 8:30 PM CDT Friday the stage was 9.9 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM CDT Friday was 10.0 feet. - Forecast...The river is expected to gradually fall below flood stage early next week. - Flood stage is 9.5 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 10, 2026, 9:04 pm      Expires:  April 11, 2026, 3:15 pm
Area:  Kane, IL; Lake, IL; McHenry, IL


Flood Warning issued April 10 at 9:02PM CDT until April 12 at 7:00AM CDT by NWS Chicago IL

Summary: ...The Flood Warning continues for the following rivers in Illinois... Des Plaines River near Gurnee affecting Lake IL County. Des Plaines River near Russell affecting Lake IL County. For the Des Plaines River...including Russell, Gurnee...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Des Plaines River from IL/WI state line downstream to US-41 in Gurnee, including the Russell gauge. * WHEN...Until Sunday morning. * IMPACTS...At 7.0 feet, Low-lying wetlands and agricultural land is inundated near the river. * ADDITIONAL DETAILS... - At 8:30 PM CDT Friday the stage was 7.3 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM CDT Friday was 7.7 feet. - Forecast...The river is expected to fall below flood stage Sunday morning and continue falling next week. - Flood stage is 7.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 10, 2026, 9:02 pm      Expires:  April 11, 2026, 3:15 pm
Area:  Lake, IL


Flood Warning issued April 10 at 9:02PM CDT until April 12 at 1:00PM CDT by NWS Chicago IL

Summary: ...The Flood Warning continues for the following rivers in Illinois... Des Plaines River near Gurnee affecting Lake IL County. Des Plaines River near Russell affecting Lake IL County. For the Des Plaines River...including Russell, Gurnee...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Des Plaines River from US-41 in Gurnee downstream to Townline Road in Vernon Hills, including the Gurnee gauge. * WHEN...Until early Sunday afternoon. * IMPACTS...At 7.0 feet, Forest land inundated near the river in Gurnee. * ADDITIONAL DETAILS... - At 8:30 PM CDT Friday the stage was 7.6 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM CDT Friday was 8.0 feet. - Forecast...The river is expected to fall below flood stage Sunday morning and continue falling next week. - Flood stage is 7.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 10, 2026, 9:02 pm      Expires:  April 11, 2026, 3:15 pm
Area:  Lake, IL