Weather Warnings for Illinois

Issued by the National Weather Service

Current watches, warnings, and advisories for Illinois
Alerts Updated: April 17, 2026, 11:02 am  UTC


Dense Fog Advisory issued April 17 at 6:01AM CDT until April 17 at 10:00AM CDT by NWS Chicago IL

Summary: * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Illinois, DuPage, Kane, Lake IL, McHenry, and Northern Cook Counties. In Indiana, Porter County. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
Severity:  Moderate    Effective:  April 17, 2026, 6:01 am      Expires:  April 17, 2026, 10:00 am
Area:  McHenry; Lake; Kane; DuPage; Northern Cook; Porter


Flood Warning issued April 17 at 5:49AM CDT until April 18 at 1:00AM CDT by NWS Milwaukee/Sullivan WI

Summary: ...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Root River At Franklin affecting Milwaukee County. Wisconsin River At Wisconsin Dells affecting Columbia and Sauk Counties. Rock River At Fort Atkinson affecting Jefferson County. Rock River At Afton affecting Winnebago and Rock Counties. Baraboo River Near Baraboo affecting Columbia and Sauk Counties. Rock River At Jefferson affecting Jefferson County. Rock River At Watertown affecting Jefferson County. ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County. Fox River Near Berlin affecting Green Lake County. Crawfish River At Milford affecting Jefferson County. Fox River Lower At Waukesha affecting Waukesha County. Fox River Lower Near New Munster affecting Kenosha and Lake Counties. Milwaukee River Near Cedarburg affecting Ozaukee County. Root River Canal At Raymond affecting Racine County. Sugar River At Brodhead affecting Winnebago, Rock and Green Counties. Wisconsin River At Portage affecting Columbia County. ...The Flood Warning is cancelled for the following rivers in Illinois...Wisconsin... Turtle Creek Near Clinton affecting Winnebago and Rock Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Sugar River at Brodhead. * WHEN...Until just after midnight tonight. * IMPACTS...At 5.5 feet, Some roads are flooded about 6 miles downstream in Avon Township in Rock County. In the Avon Bottoms area of Rock County, flooding is occurring in Sugar River Park. * ADDITIONAL DETAILS... - At 5:00 AM CDT Friday the stage was 5.7 feet. - Bankfull stage is 4.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 5:00 AM CDT Friday was 6.2 feet. - Forecast...The river is expected to fall below flood stage this evening and continue falling to 1.9 feet Thursday evening. - Flood stage is 5.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 17, 2026, 5:49 am      Expires:  April 17, 2026, 6:00 pm
Area:  Winnebago, IL; Green, WI; Rock, WI


Flood Warning issued April 17 at 5:49AM CDT by NWS Milwaukee/Sullivan WI

Summary: ...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Root River At Franklin affecting Milwaukee County. Wisconsin River At Wisconsin Dells affecting Columbia and Sauk Counties. Rock River At Fort Atkinson affecting Jefferson County. Rock River At Afton affecting Winnebago and Rock Counties. Baraboo River Near Baraboo affecting Columbia and Sauk Counties. Rock River At Jefferson affecting Jefferson County. Rock River At Watertown affecting Jefferson County. ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County. Fox River Near Berlin affecting Green Lake County. Crawfish River At Milford affecting Jefferson County. Fox River Lower At Waukesha affecting Waukesha County. Fox River Lower Near New Munster affecting Kenosha and Lake Counties. Milwaukee River Near Cedarburg affecting Ozaukee County. Root River Canal At Raymond affecting Racine County. Sugar River At Brodhead affecting Winnebago, Rock and Green Counties. Wisconsin River At Portage affecting Columbia County. ...The Flood Warning is cancelled for the following rivers in Illinois...Wisconsin... Turtle Creek Near Clinton affecting Winnebago and Rock Counties. * WHAT...Moderate flooding is occurring and major flooding is forecast. * WHERE...Fox River Lower near New Munster. * WHEN...Until further notice. * IMPACTS...At 14.0 feet, There is flooding of the lower levels of homes in the Town of Wheatland and Village of Salem Lakes areas long Riverside Drive, Shorewood Drive, 101st Street and Shorewood Terrace. * ADDITIONAL DETAILS... - At 5:00 AM CDT Friday the stage was 13.8 feet. - Bankfull stage is 10.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 5:00 AM CDT Friday was 13.8 feet. - Forecast...The river is expected to rise to a crest of 14.3 feet this evening. - Flood stage is 11.0 feet. - Flood History...This crest compares to a previous crest of 14.5 feet on 04/20/2013. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 17, 2026, 5:49 am      Expires:  April 17, 2026, 6:00 pm
Area:  Lake, IL; Kenosha, WI


Flood Warning issued April 17 at 5:49AM CDT by NWS Milwaukee/Sullivan WI

Summary: ...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Root River At Franklin affecting Milwaukee County. Wisconsin River At Wisconsin Dells affecting Columbia and Sauk Counties. Rock River At Fort Atkinson affecting Jefferson County. Rock River At Afton affecting Winnebago and Rock Counties. Baraboo River Near Baraboo affecting Columbia and Sauk Counties. Rock River At Jefferson affecting Jefferson County. Rock River At Watertown affecting Jefferson County. ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County. Fox River Near Berlin affecting Green Lake County. Crawfish River At Milford affecting Jefferson County. Fox River Lower At Waukesha affecting Waukesha County. Fox River Lower Near New Munster affecting Kenosha and Lake Counties. Milwaukee River Near Cedarburg affecting Ozaukee County. Root River Canal At Raymond affecting Racine County. Sugar River At Brodhead affecting Winnebago, Rock and Green Counties. Wisconsin River At Portage affecting Columbia County. ...The Flood Warning is cancelled for the following rivers in Illinois...Wisconsin... Turtle Creek Near Clinton affecting Winnebago and Rock Counties. * WHAT...Minor flooding is occurring and moderate flooding is forecast. * WHERE...Rock River at Afton. * WHEN...Until further notice. * IMPACTS...At 11.5 feet, Water surrounds at least 2 homes near the river in the Afton area. Numerous secondary roads in the Afton area are closed to traffic. Floodwaters affect South River Road on the south side of Janesville. Traxler Park off of Memorial Drive in Janesville is flooded. * ADDITIONAL DETAILS... - At 5:00 AM CDT Friday the stage was 9.2 feet. - Bankfull stage is 8.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 5:00 AM CDT Friday was 9.2 feet. - Forecast...The river is expected to rise to 11.5 feet early Thursday morning. Additional rises are possible thereafter. - Flood stage is 9.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 17, 2026, 5:49 am      Expires:  April 17, 2026, 6:00 pm
Area:  Winnebago, IL; Rock, WI


Hydrologic Outlook issued April 17 at 3:57AM CDT by NWS Chicago IL

Summary: ESFLOT Additional thunderstorms are expected Friday afternoon and Friday night across northern Illinois and northwest Indiana. Atmospheric conditions are favorable for some of these storms to produce locally heavy rainfall. Many rivers across northern Illinois and northwest Indiana remain elevated. Soil moisture also remains elevated in many areas, especially in northern Illinois along the Wisconsin border. Thus, any heavy rainfall that occurs could lead to flooding of rivers, creeks, urban and low-lying areas. Rivers such as the Rock, Fox and Des Plaines which are already in flood in some locations, may be especially prone to rainfall which could exacerbate ongoing flooding. This outlook means that elevated water levels and potential impacts are possible, but not yet certain. Persons should closely monitor forecasts including the possibility of flood watches, warnings, and advisories. This outlook will be updated by Friday afternoon.
Severity:  Unknown    Effective:  April 17, 2026, 3:57 am      Expires:  April 17, 2026, 4:00 pm
Area:  Boone, IL; Cook, IL; De Kalb, IL; DuPage, IL; Ford, IL; Grundy, IL; Iroquois, IL; Kane, IL; Kankakee, IL; Kendall, IL; Lake, IL; La Salle, IL; Lee, IL; Livingston, IL; McHenry, IL; Ogle, IL; Will, IL; Winnebago, IL; Benton, IN; Jasper, IN; Lake, IN; Newton, IN; Porter, IN


Flood Warning issued April 16 at 10:12PM CDT by NWS St Louis MO

Summary: ...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. 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 27.2 feet, Silo Park just northwest of Clarksville off Highway 79 begins flooding. * ADDITIONAL DETAILS... - At 10:00 PM CDT Thursday the stage was 26.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 PM CDT Thursday was 26.7 feet. - Forecast...The river is expected to rise to 27.4 feet Wednesday evening. Additional rises are possible thereafter. - Flood stage is 25.0 feet.
Severity:  Severe    Effective:  April 16, 2026, 10:12 pm      Expires:  April 18, 2026, 10:15 am
Area:  Calhoun, IL; Pike, MO


Flood Warning issued April 16 at 10:12PM CDT by NWS St Louis MO

Summary: ...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. 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 17.0 feet, The parking area at the boat house floods. * ADDITIONAL DETAILS... - At 10:00 PM CDT Thursday the stage was 16.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 PM CDT Thursday was 16.6 feet. - Forecast...The river is expected to rise to 17.1 feet Tuesday evening. Additional rises are possible thereafter. - Flood stage is 15.0 feet.
Severity:  Severe    Effective:  April 16, 2026, 10:12 pm      Expires:  April 18, 2026, 10:15 am
Area:  Pike, IL; Pike, MO


Flood Warning issued April 16 at 10:12PM CDT by NWS St Louis MO

Summary: ...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. 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 forecast. * WHERE...Mississippi River at Saverton. * WHEN...Until further notice. * 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 8:00 PM CDT Thursday the stage was 15.9 feet. - Forecast...The river is expected to rise above flood stage Saturday morning and continue rising to 17.0 feet early Wednesday morning. Additional rises are possible thereafter. - Flood stage is 16.0 feet.
Severity:  Severe    Effective:  April 16, 2026, 10:12 pm      Expires:  April 18, 2026, 10:15 am
Area:  Pike, IL; Ralls, MO


Flood Warning issued April 16 at 10:12PM CDT by NWS St Louis MO

Summary: ...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. 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 Hannibal. * WHEN...Until further notice. * 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 9:15 PM CDT Thursday the stage was 17.4 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:15 PM CDT Thursday was 17.6 feet. - Forecast...The river is expected to rise to 18.3 feet Wednesday morning. Additional rises are possible thereafter. - Flood stage is 17.0 feet.
Severity:  Severe    Effective:  April 16, 2026, 10:12 pm      Expires:  April 18, 2026, 10:15 am
Area:  Pike, IL; Marion, MO


Flood Warning issued April 16 at 10:12PM CDT by NWS St Louis MO

Summary: ...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. 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 Winfield. * WHEN...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 10:00 PM CDT Thursday the stage was 26.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 PM CDT Thursday was 26.5 feet. - Forecast...The river is expected to rise to a crest of 26.5 feet just after midnight tonight. It will then rise to 27.5 feet Thursday, April 23. Additional rises are possible thereafter. - Flood stage is 26.0 feet.
Severity:  Severe    Effective:  April 16, 2026, 10:12 pm      Expires:  April 18, 2026, 10:15 am
Area:  Calhoun, IL; Lincoln, MO


Flood Warning issued April 16 at 10:12PM CDT by NWS Chicago IL

Summary: ...The Flood Warning is extended for the following rivers in Illinois... Fox River at Montgomery affecting Kane and Kendall Counties. For the Fox River (Illinois)...including Algonquin Lock & Dam tailwater, Montgomery...Moderate flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Fox River from Red Gate Road in St. Charles downstream to Millington, including the Montgomery gauge. * WHEN...Until further notice. * IMPACTS...At 13.5 feet, Low-lying parking lots at city hall and Boy Scout Island are threatened in St. Charles. Fox River Trail is threatened at St. Mary Park in St. Charles. * ADDITIONAL DETAILS... - At 9:00 PM CDT Thursday the stage was 13.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:00 PM CDT Thursday was 13.5 feet. - Forecast...The river is expected to fall below flood stage Friday afternoon. Additional rises are possible thereafter. - Flood stage is 13.5 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 16, 2026, 10:12 pm      Expires:  April 17, 2026, 4:15 pm
Area:  Kane, IL; Kendall, IL


Flood Warning issued April 16 at 9:44PM CDT by NWS Chicago IL

Summary: ...The Flood Warning continues for the following rivers in Illinois... Fox River at Montgomery affecting Kane and Kendall Counties. Fox River at Algonquin Lock & Dam tailwater affecting Lake IL, Kane and McHenry Counties. For the Fox River (Illinois)...including Algonquin Lock & Dam tailwater, Moderate flooding is forecast. * WHAT...Minor flooding is occurring and moderate 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 11.5 feet, Residences threatened along Oceola Drive in Algonquin. A few residences threatened along McBridge Street in Elgin. Jayne Street and Beach Drive threatened in Algonquin. River Street threatened in East Dundee. Jerusha Avenue threatened in Elgin. Fox River Trail threatened between East Dundee and Elgin. * ADDITIONAL DETAILS... - At 8:30 PM CDT Thursday the stage was 10.4 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM CDT Thursday was 10.4 feet. - Forecast...The river is expected to rise to 11.3 feet Wednesday morning. Additional rises are possible thereafter. - Flood stage is 9.5 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 16, 2026, 9:44 pm      Expires:  April 17, 2026, 3:45 pm
Area:  Kane, IL; Lake, IL; McHenry, IL


Flood Warning issued April 16 at 9:38PM CDT until April 21 at 7:00PM CDT by NWS Chicago IL

Summary: ...The Flood Warning continues for the following rivers in Illinois... Des Plaines River at Lincolnshire affecting Lake IL and Cook Counties. Des Plaines River near Des Plaines affecting Cook County. 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, Lincolnshire, Des Plaines...Moderate flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Des Plaines River from Palatine Road in Prospect Heights downstream to Irving Park Road in Chicago, including the Des Plaines gauge. * WHEN...Until Tuesday evening. * IMPACTS...At 17.0 feet, Central Road and Golf Road are threatened in Des Plaines. * ADDITIONAL DETAILS... - At 8:45 PM CDT Thursday the stage was 15.9 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:45 PM CDT Thursday was 15.9 feet. - Forecast...The river is expected to rise to a crest of 16.4 feet Saturday morning. - Flood stage is 15.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 16, 2026, 9:38 pm      Expires:  April 17, 2026, 3:45 pm
Area:  Cook, IL


Flood Warning issued April 16 at 9:38PM CDT until April 22 at 1:00AM CDT by NWS Chicago IL

Summary: ...The Flood Warning continues for the following rivers in Illinois... Des Plaines River at Lincolnshire affecting Lake IL and Cook Counties. Des Plaines River near Des Plaines affecting Cook County. 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, Lincolnshire, Des Plaines...Moderate flooding is forecast. * WHAT...Minor flooding is occurring and moderate flooding is forecast. * WHERE...Des Plaines River from Townline Road in Libertyville downstream to Palatine Road in Prospect Heights, including the Lincolnshire gauge. * WHEN...Until early Wednesday morning. * IMPACTS...At 14.0 feet, Residences threatened east of the river just south of IL-22 (Half-Day Road). Lincolnshire Drive threatened at Wiltshire Lane. * ADDITIONAL DETAILS... - At 8:45 PM CDT Thursday the stage was 13.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:45 PM CDT Thursday was 13.5 feet. - Forecast...The river is expected to rise to a crest of 14.5 feet early Saturday afternoon. - Flood stage is 12.5 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 16, 2026, 9:38 pm      Expires:  April 17, 2026, 3:45 pm
Area:  Cook, IL; Lake, IL


Flood Warning issued April 16 at 9:38PM CDT until April 22 at 4:00PM CDT by NWS Chicago IL

Summary: ...The Flood Warning continues for the following rivers in Illinois... Des Plaines River at Lincolnshire affecting Lake IL and Cook Counties. Des Plaines River near Des Plaines affecting Cook County. 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, Lincolnshire, Des Plaines...Moderate flooding is forecast. * WHAT...Moderate flooding is occurring and moderate 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 Wednesday afternoon. * IMPACTS...At 9.0 feet, Kilbourne Road and Emerald Avenue threatened near Grand Avenue in Gurnee. * ADDITIONAL DETAILS... - At 9:30 PM CDT Thursday the stage was 9.2 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 PM CDT Thursday was 9.3 feet. - Forecast...The river is expected to rise to a crest of 9.5 feet early Friday afternoon. - Flood stage is 7.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 16, 2026, 9:38 pm      Expires:  April 17, 2026, 3:45 pm
Area:  Lake, IL


Flood Warning issued April 16 at 9:38PM CDT by NWS Chicago IL

Summary: ...The Flood Warning continues for the following rivers in Illinois... Des Plaines River at Lincolnshire affecting Lake IL and Cook Counties. Des Plaines River near Des Plaines affecting Cook County. 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, Lincolnshire, Des Plaines...Moderate 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 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 PM CDT Thursday the stage was 8.3 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM CDT Thursday was 8.3 feet. - Forecast...The river is expected to rise to a crest of 8.7 feet early Saturday morning. - Flood stage is 7.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 16, 2026, 9:38 pm      Expires:  April 17, 2026, 3:45 pm
Area:  Lake, IL


Flood Warning issued April 16 at 9:22PM 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 Thursday the stage was 14.9 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:45 PM CDT Thursday was 15.1 feet. - Forecast...The river is expected to remain steady above flood stage at 14.9 feet. - Flood stage is 14.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 16, 2026, 9:22 pm      Expires:  April 17, 2026, 1:30 pm
Area:  Brown, IL; Cass, IL; Morgan, IL; Schuyler, IL


Flood Warning issued April 16 at 9:22PM 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 Thursday the stage was 15.1 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:45 PM CDT Thursday was 15.2 feet. - Forecast...The river is expected to remain steady above flood stage at 15.1 feet. - Flood stage is 14.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 16, 2026, 9:22 pm      Expires:  April 17, 2026, 1:30 pm
Area:  Cass, IL; Fulton, IL; Mason, IL


Flood Watch issued April 16 at 9:20PM CDT until April 24 at 1:00AM CDT by NWS Quad Cities IA IL

Summary: ...The Flood Watch continues for the following rivers in Illinois... Iowa... Mississippi River at Dubuque affecting Dubuque, Jackson and Jo Daviess zones. * WHAT...Flooding is possible. * WHERE...Mississippi River at Dubuque. * WHEN...From late Wednesday night to Friday, April 24. * IMPACTS...At 17.0 feet, Water affects homes in Shore Acres in East Dubuque. * ADDITIONAL DETAILS... - At 8:30 PM CDT Thursday the stage was 13.7 feet. - Forecast...Flood stage may be reached Thursday, April 23. - Flood stage is 17.0 feet.
Severity:  Severe    Effective:  April 16, 2026, 9:20 pm      Expires:  April 17, 2026, 9:30 pm
Area:  Dubuque; Jackson; Jo Daviess


Flood Warning issued April 16 at 9:20PM CDT by NWS Quad Cities IA IL

Summary: ...The Flood Warning is extended for the following rivers in Illinois...Iowa... Mississippi River at Keithsburg affecting Mercer, Louisa, Henderson and Des Moines Counties. Mississippi River at New Boston LD17 affecting Mercer and Louisa Counties. Mississippi River at Muscatine affecting Mercer, Rock Island, Muscatine and Louisa Counties. ...The Flood Warning continues for the following rivers in Illinois...Iowa...Missouri... Mississippi River at Burlington affecting Lee, Hancock, Henderson and Des Moines Counties. Mississippi River at Gladstone LD18 affecting Henderson and Des Moines Counties. Mississippi River at Gregory Landing affecting Clark and Hancock Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River at Gladstone LD18. * WHEN...Until further notice. * ADDITIONAL DETAILS... - At 9:00 PM CDT Thursday the stage was 10.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:00 PM CDT Thursday was 10.5 feet. - Forecast...The river is expected to rise to 11.8 feet Thursday, April 23. Additional rises are possible thereafter. - Flood stage is 10.0 feet.
Severity:  Severe    Effective:  April 16, 2026, 9:20 pm      Expires:  April 17, 2026, 9:30 pm
Area:  Des Moines, IA; Henderson, IL


Flood Warning issued April 16 at 9:20PM CDT by NWS Quad Cities IA IL

Summary: ...The Flood Warning is extended for the following rivers in Illinois...Iowa... Mississippi River at Keithsburg affecting Mercer, Louisa, Henderson and Des Moines Counties. Mississippi River at New Boston LD17 affecting Mercer and Louisa Counties. Mississippi River at Muscatine affecting Mercer, Rock Island, Muscatine and Louisa Counties. ...The Flood Warning continues for the following rivers in Illinois...Iowa...Missouri... Mississippi River at Burlington affecting Lee, Hancock, Henderson and Des Moines Counties. Mississippi River at Gladstone LD18 affecting Henderson and Des Moines Counties. Mississippi River at Gregory Landing affecting Clark and Hancock Counties. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at Gregory Landing. * WHEN...From Sunday afternoon until further notice. * IMPACTS...At 16.0 feet, Water affects buildings in unprotected low areas. * ADDITIONAL DETAILS... - At 9:00 PM CDT Thursday the stage was 14.0 feet. - Forecast...The river is expected to rise above flood stage early Sunday afternoon and continue rising to 15.7 feet Wednesday evening. Additional rises are possible thereafter. - Flood stage is 15.0 feet.
Severity:  Severe    Effective:  April 16, 2026, 9:20 pm      Expires:  April 17, 2026, 9:30 pm
Area:  Hancock, IL; Clark, MO


Flood Warning issued April 16 at 9:20PM CDT by NWS Quad Cities IA IL

Summary: ...The Flood Warning is extended for the following rivers in Illinois...Iowa... Mississippi River at Keithsburg affecting Mercer, Louisa, Henderson and Des Moines Counties. Mississippi River at New Boston LD17 affecting Mercer and Louisa Counties. Mississippi River at Muscatine affecting Mercer, Rock Island, Muscatine and Louisa Counties. ...The Flood Warning continues for the following rivers in Illinois...Iowa...Missouri... Mississippi River at Burlington affecting Lee, Hancock, Henderson and Des Moines Counties. Mississippi River at Gladstone LD18 affecting Henderson and Des Moines Counties. Mississippi River at Gregory Landing affecting Clark and Hancock Counties. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at Keithsburg. * WHEN...From Friday afternoon until further notice. * IMPACTS...At 16.0 feet, Water is over the campground and boat ramp in Keithsburg. * ADDITIONAL DETAILS... - At 8:30 PM CDT Thursday the stage was 13.9 feet. - Forecast...The river is expected to rise above flood stage early tomorrow afternoon and continue rising to 15.4 feet Thursday, April 23. Additional rises are possible thereafter. - Flood stage is 14.0 feet.
Severity:  Severe    Effective:  April 16, 2026, 9:20 pm      Expires:  April 17, 2026, 9:30 pm
Area:  Des Moines, IA; Louisa, IA; Henderson, IL; Mercer, IL


Flood Warning issued April 16 at 9:20PM CDT by NWS Quad Cities IA IL

Summary: ...The Flood Warning is extended for the following rivers in Illinois...Iowa... Mississippi River at Keithsburg affecting Mercer, Louisa, Henderson and Des Moines Counties. Mississippi River at New Boston LD17 affecting Mercer and Louisa Counties. Mississippi River at Muscatine affecting Mercer, Rock Island, Muscatine and Louisa Counties. ...The Flood Warning continues for the following rivers in Illinois...Iowa...Missouri... Mississippi River at Burlington affecting Lee, Hancock, Henderson and Des Moines Counties. Mississippi River at Gladstone LD18 affecting Henderson and Des Moines Counties. Mississippi River at Gregory Landing affecting Clark and Hancock Counties. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at Muscatine. * WHEN...From late Sunday night until further notice. * IMPACTS...At 16.0 feet, Water affects the lower portion of the Riverside Park parking lot. * ADDITIONAL DETAILS... - At 8:15 PM CDT Thursday the stage was 14.5 feet. - Forecast...The river is expected to rise above flood stage early Monday morning and continue rising to 16.9 feet Thursday, April 23. Additional rises are possible thereafter. - Flood stage is 16.0 feet.
Severity:  Severe    Effective:  April 16, 2026, 9:20 pm      Expires:  April 17, 2026, 9:30 pm
Area:  Louisa, IA; Muscatine, IA; Mercer, IL; Rock Island, IL


Flood Warning issued April 16 at 9:20PM CDT by NWS Quad Cities IA IL

Summary: ...The Flood Warning is extended for the following rivers in Illinois...Iowa... Mississippi River at Keithsburg affecting Mercer, Louisa, Henderson and Des Moines Counties. Mississippi River at New Boston LD17 affecting Mercer and Louisa Counties. Mississippi River at Muscatine affecting Mercer, Rock Island, Muscatine and Louisa Counties. ...The Flood Warning continues for the following rivers in Illinois...Iowa...Missouri... Mississippi River at Burlington affecting Lee, Hancock, Henderson and Des Moines Counties. Mississippi River at Gladstone LD18 affecting Henderson and Des Moines Counties. Mississippi River at Gregory Landing affecting Clark and Hancock Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River at Burlington. * WHEN...Until further notice. * IMPACTS...At 16.0 feet, Water affects low lying buildings and homes in Montrose and Niota. * ADDITIONAL DETAILS... - At 9:00 PM CDT Thursday the stage was 15.4 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:00 PM CDT Thursday was 15.4 feet. - Forecast...The river is expected to rise to 16.4 feet Tuesday evening. Additional rises are possible thereafter. - Flood stage is 15.0 feet.
Severity:  Severe    Effective:  April 16, 2026, 9:20 pm      Expires:  April 17, 2026, 9:30 pm
Area:  Des Moines, IA; Lee, IA; Hancock, IL; Henderson, IL


Flood Warning issued April 16 at 9:20PM CDT by NWS Quad Cities IA IL

Summary: ...The Flood Warning is extended for the following rivers in Illinois...Iowa... Mississippi River at Keithsburg affecting Mercer, Louisa, Henderson and Des Moines Counties. Mississippi River at New Boston LD17 affecting Mercer and Louisa Counties. Mississippi River at Muscatine affecting Mercer, Rock Island, Muscatine and Louisa Counties. ...The Flood Warning continues for the following rivers in Illinois...Iowa...Missouri... Mississippi River at Burlington affecting Lee, Hancock, Henderson and Des Moines Counties. Mississippi River at Gladstone LD18 affecting Henderson and Des Moines Counties. Mississippi River at Gregory Landing affecting Clark and Hancock Counties. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at New Boston LD17. * WHEN...From Saturday morning until further notice. * IMPACTS...At 18.1 feet, Lock and Dam 17 is closed. * ADDITIONAL DETAILS... - At 8:40 PM CDT Thursday the stage was 14.4 feet. - Forecast...The river is expected to rise above flood stage late Saturday morning and continue rising to 16.3 feet Thursday, April 23. Additional rises are possible thereafter. - Flood stage is 15.0 feet.
Severity:  Severe    Effective:  April 16, 2026, 9:20 pm      Expires:  April 17, 2026, 9:30 pm
Area:  Louisa, IA; Mercer, IL


Flood Watch issued April 16 at 9:07PM CDT by NWS Chicago IL

Summary: ...The Flood Watch continues for the following rivers in Illinois... Illinois River at La Salle affecting Bureau, La Salle and Putnam zones. * 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...Until further notice. * IMPACTS...At 20.0 feet, Agricultural areas in La Salle, Spring Valley, and Peru are inundated. * ADDITIONAL DETAILS... - At 8:45 PM CDT Thursday the stage was 19.1 feet. - Forecast...Flood stage may be reached based on the latest forecast information. - Flood stage is 20.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 16, 2026, 9:07 pm      Expires:  April 17, 2026, 3:15 pm
Area:  Bureau; Putnam; La Salle


Flood Warning issued April 16 at 9:02PM CDT until April 18 at 12:00PM CDT by NWS Chicago IL

Summary: ...The Flood Warning continues for the following rivers in Illinois... Kishwaukee River near Perryville affecting Winnebago County. Kishwaukee River at Belvidere affecting Boone and Winnebago Counties. For the Kishwaukee River...including Belvidere, Perryville...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Kishwaukee River from Confluence with South Branch Kishwaukee River downstream to the Rock River, including the Perryville gauge. * WHEN...Until early Saturday afternoon. * IMPACTS...At 13.0 feet, Roadways threatened at Blackhawk Valley Campground south of Rockford. * ADDITIONAL DETAILS... - At 8:30 PM CDT Thursday the stage was 12.8 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM CDT Thursday was 12.8 feet. - Forecast...The river is expected to rise to a crest of 13.3 feet Friday morning. - Flood stage is 12.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 16, 2026, 9:02 pm      Expires:  April 17, 2026, 3:15 pm
Area:  Winnebago, IL


Flood Warning issued April 16 at 9:02PM CDT until April 17 at 7:00PM CDT by NWS Chicago IL

Summary: ...The Flood Warning continues for the following rivers in Illinois... Kishwaukee River near Perryville affecting Winnebago County. Kishwaukee River at Belvidere affecting Boone and Winnebago Counties. For the Kishwaukee River...including Belvidere, Perryville...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Kishwaukee River from County Line Road downstream to confluence with South Branch Kishwaukee River, including the Belvidere gauge. * WHEN...Until Friday evening. * IMPACTS...At 9.0 feet, Boone-McHenry County Line Road threatened. Low-lying areas are threatened in Belvidere Park. * ADDITIONAL DETAILS... - At 8:30 PM CDT Thursday the stage was 9.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM CDT Thursday was 9.0 feet. - Forecast...The river will remain near flood stage through Friday evening and then is expected to slowly fall. - Flood stage is 9.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 16, 2026, 9:02 pm      Expires:  April 17, 2026, 3:15 pm
Area:  Boone, IL; Winnebago, IL


Flood Warning issued April 16 at 9:01PM CDT by NWS St Louis MO

Summary: ...The Flood Warning is extended for the following river in Illinois... Illinois River at Hardin. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Illinois River at Hardin. * WHEN...From Saturday afternoon until further notice. * ADDITIONAL DETAILS... - At 8:30 PM CDT Thursday the stage was 24.7 feet. - Forecast...The river is expected to rise above flood stage early Saturday afternoon. - Flood stage is 25.0 feet.
Severity:  Severe    Effective:  April 16, 2026, 9:01 pm      Expires:  April 18, 2026, 9:15 am
Area:  Calhoun, IL; Greene, IL; Jersey, IL


Flood Warning issued April 16 at 8:52PM CDT until April 20 at 7:00PM CDT by NWS Chicago IL

Summary: ...The Flood Warning continues for the following rivers in Illinois... Rock River at Byron affecting Ogle County. Pecatonica River near Shirland affecting Winnebago County. Rock River at Rockton affecting Winnebago County. Rock River at Latham Park affecting Winnebago County. For the Rock River...including Rockton, Latham Park, Byron... Moderate flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Pecatonica River from Winnebago County line downstream to confluence with the Rock River, including the Shirland gauge. * WHEN...From Friday evening to Monday evening. * IMPACTS...At 12.0 feet, Low-lying sections of the Winnebago County Fairgrounds are inundated. Low-lying sections of Rivers Edge Campground are inundated east of Shirland. * ADDITIONAL DETAILS... - At 8:00 PM CDT Thursday the stage was 11.3 feet. - Forecast...The river is expected to rise above flood stage Friday evening to a crest of 12.4 feet Saturday evening. - Flood stage is 12.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 16, 2026, 8:52 pm      Expires:  April 17, 2026, 3:00 pm
Area:  Winnebago, IL


Flood Warning issued April 16 at 8:52PM CDT until April 20 at 4:00PM CDT by NWS Chicago IL

Summary: ...The Flood Warning continues for the following rivers in Illinois... Rock River at Byron affecting Ogle County. Pecatonica River near Shirland affecting Winnebago County. Rock River at Rockton affecting Winnebago County. Rock River at Latham Park affecting Winnebago County. For the Rock River...including Rockton, Latham Park, Byron... Moderate flooding is forecast. * WHAT...Moderate flooding is forecast. * WHERE...Rock River from Confluence with Kishwaukee River to Castle Rock State Park near Oregon, including the Byron gauge. * WHEN...From late tonight to Monday afternoon. * IMPACTS...At 13.5 feet, Numerous low-lying structures downstream of Byron are flooded. * ADDITIONAL DETAILS... - At 8:15 PM CDT Thursday the stage was 12.4 feet. - Forecast...The river is expected to rise above flood stage just after midnight tonight to a crest of 14.0 feet Saturday morning. - Flood stage is 13.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 16, 2026, 8:52 pm      Expires:  April 17, 2026, 3:00 pm
Area:  Ogle, IL


Flood Warning issued April 16 at 8:52PM CDT by NWS Chicago IL

Summary: ...The Flood Warning continues for the following rivers in Illinois... Rock River at Byron affecting Ogle County. Pecatonica River near Shirland affecting Winnebago County. Rock River at Rockton affecting Winnebago County. Rock River at Latham Park affecting Winnebago County. For the Rock River...including Rockton, Latham Park, Byron... Moderate flooding is forecast. * WHAT...Minor flooding is occurring and moderate flooding is forecast. * WHERE...Rock River from Swanson Road in Roscoe downstream to Shorewood Park in Loves Park, including the Latham Park gauge. * WHEN...Until further notice. * IMPACTS...At 11.0 feet, Low-lying sections of Harbor Oaks Drive are threatened in north Machesney Park. Low-lying residences are threatened along Queen Oaks Drive in Machesney Park. Browns Beach Road is threatened in north Rockford. Lower parking lot of Sportscore One is inundated in north Rockford. * ADDITIONAL DETAILS... - At 8:30 PM CDT Thursday the stage was 9.2 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM CDT Thursday was 9.2 feet. - Forecast...The river is expected to rise to a crest of 11.0 feet early Sunday afternoon. - Flood stage is 9.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 16, 2026, 8:52 pm      Expires:  April 17, 2026, 3:00 pm
Area:  Winnebago, IL


Flood Warning issued April 16 at 8:52PM CDT by NWS Chicago IL

Summary: ...The Flood Warning continues for the following rivers in Illinois... Rock River at Byron affecting Ogle County. Pecatonica River near Shirland affecting Winnebago County. Rock River at Rockton affecting Winnebago County. Rock River at Latham Park affecting Winnebago County. For the Rock River...including Rockton, Latham Park, Byron... Moderate flooding is forecast. * WHAT...Minor flooding is occurring and moderate flooding is forecast. * WHERE...Rock River from Prairie Hill Road downstream to Swanson Road in Roscoe, including the Rockton gauge. * WHEN...Until further notice. * IMPACTS...At 12.0 feet, Multiple low-lying roads threatened along the river in Roscoe. * ADDITIONAL DETAILS... - At 8:30 PM CDT Thursday the stage was 10.2 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM CDT Thursday was 10.2 feet. - Forecast...The river is expected to rise to a crest of 11.4 feet early Saturday afternoon. - Flood stage is 10.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 16, 2026, 8:52 pm      Expires:  April 17, 2026, 3:00 pm
Area:  Winnebago, IL


Flood Warning issued April 16 at 8:50PM CDT by NWS Quad Cities IA IL

Summary: ...The Flood Warning is extended for the following rivers in Iowa... Illinois... Cedar River near Conesville affecting Muscatine and Louisa Counties. Iowa River at Marengo affecting Benton and Iowa Counties. Iowa River at Wapello affecting Louisa County. Rock River near Joslin affecting Rock Island, Whiteside and Henry IL Counties. ...The Flood Warning continues for the following rivers in Iowa... Illinois... Iowa River at Oakville affecting Louisa County. Rock River at Como affecting Whiteside County. Rock River at Moline affecting Rock Island and Henry IL Counties. ...The Flood Warning is cancelled for the following rivers in Iowa... English River at Kalona affecting Johnson and Washington Counties. * WHAT...Moderate flooding is forecast. * WHERE...Rock River at Moline. * WHEN...From Friday afternoon until further notice. * 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 PM CDT Thursday the stage was 11.1 feet. - Forecast...The river is expected to rise above flood stage tomorrow afternoon and continue rising to a crest of 13.4 feet early Sunday afternoon. - Flood stage is 12.0 feet.
Severity:  Severe    Effective:  April 16, 2026, 8:50 pm      Expires:  April 17, 2026, 9:00 pm
Area:  Henry, IL; Rock Island, IL


Flood Warning issued April 16 at 8:50PM CDT by NWS Quad Cities IA IL

Summary: ...The Flood Warning is extended for the following rivers in Iowa... Illinois... Cedar River near Conesville affecting Muscatine and Louisa Counties. Iowa River at Marengo affecting Benton and Iowa Counties. Iowa River at Wapello affecting Louisa County. Rock River near Joslin affecting Rock Island, Whiteside and Henry IL Counties. ...The Flood Warning continues for the following rivers in Iowa... Illinois... Iowa River at Oakville affecting Louisa County. Rock River at Como affecting Whiteside County. Rock River at Moline affecting Rock Island and Henry IL Counties. ...The Flood Warning is cancelled for the following rivers in Iowa... English River at Kalona affecting Johnson and Washington Counties. * WHAT...Moderate flooding is forecast. * WHERE...Rock River near Joslin. * WHEN...From late tonight until further notice. * IMPACTS...At 15.0 feet, Water affects residences in the Thompson addition. * ADDITIONAL DETAILS... - At 7:45 PM CDT Thursday the stage was 11.2 feet. - Forecast...The river is expected to rise above flood stage late tonight and continue rising to a crest of 15.0 feet Sunday evening. - Flood stage is 12.0 feet.
Severity:  Severe    Effective:  April 16, 2026, 8:50 pm      Expires:  April 17, 2026, 9:00 pm
Area:  Henry, IL; Rock Island, IL; Whiteside, IL


Flood Warning issued April 16 at 8:50PM CDT until April 19 at 9:00PM CDT by NWS Quad Cities IA IL

Summary: ...The Flood Warning is extended for the following rivers in Iowa... Illinois... Cedar River near Conesville affecting Muscatine and Louisa Counties. Iowa River at Marengo affecting Benton and Iowa Counties. Iowa River at Wapello affecting Louisa County. Rock River near Joslin affecting Rock Island, Whiteside and Henry IL Counties. ...The Flood Warning continues for the following rivers in Iowa... Illinois... Iowa River at Oakville affecting Louisa County. Rock River at Como affecting Whiteside County. Rock River at Moline affecting Rock Island and Henry IL Counties. ...The Flood Warning is cancelled for the following rivers in Iowa... English River at Kalona affecting Johnson and Washington Counties. * WHAT...Minor flooding is forecast. * WHERE...Rock River at Como. * WHEN...From Saturday evening to late Sunday evening. * IMPACTS...At 12.8 feet, Water begins to encroach into properties on Regan Road northeast of Como. * ADDITIONAL DETAILS... - At 8:30 PM CDT Thursday the stage was 10.0 feet. - Forecast...The river is expected to rise above flood stage Saturday evening to a crest of 12.6 feet early Sunday morning. It will then fall below flood stage early Sunday afternoon. - Flood stage is 12.5 feet.
Severity:  Severe    Effective:  April 16, 2026, 8:50 pm      Expires:  April 17, 2026, 9:00 pm
Area:  Whiteside, IL