LOT issues Flood Warning for Boone, Lake, McHenry [IL] till Apr 18, 8:00 AM CDT
at Sat, 18 Apr 2026 06:54:34 +0000 via IEMbot
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* WHAT...Flooding caused by excessive rainfall is occurring. * WHERE...Portions of north central and northeast Illinois, including the following counties, in north central Illinois, Boone. In northeast Illinois, Lake IL and McHenry. * WHEN...Until 800 AM CDT Saturday. * IMPACTS...Roads and streets may be flooded. Area creeks and streams are already elevated, increasing the risk of flooding due to additional rainfall. * ADDITIONAL DETAILS... - At 152 AM CDT, Doppler radar and automated rain gauges indicated heavy rain due to thunderstorms. Flooding is ongoing or expected to begin shortly. Up to 2 inches of rain have fallen. - Some locations that will experience flooding include... Waukegan, Buffalo Grove, Crystal Lake, North Chicago, Gurnee, Mundelein, Algonquin, Highland Park, Lake in the Hills, Round Lake Beach, McHenry, Belvidere, Vernon Hills, Woodstock, Zion, Huntley, Loves Park, Grayslake, Libertyville and Lake Zurich. - http://www.weather.gov/safety/flood

🚨 Flood Warning issued April 18 at 1:54AM CDT until April 18 at 8:00AM CDT by NWS Chicago IL 🚨
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LOT continues Flood Warning for Des Plaines River at Lincolnshire [IL] until further notice
at Sat, 18 Apr 2026 06:32:51 +0000 via IEMbot
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CHICAGO-MIDWAY Apr 17
Climate Report:
High: 82
Low: 48
Precip: 0.89"
Snow: Missing
at Sat, 18 Apr 2026 06:44:41 +0000 via IEMbot
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DUPAGE AIRPORT Apr 17
Climate Report:
High: 80
Low: 49
Precip: 0.49"
Snow: Missing
at Sat, 18 Apr 2026 06:44:44 +0000 via IEMbot
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...Forecast flooding changed from Moderate to Major severity for the following rivers in Illinois... Des Plaines River at Lincolnshire affecting Lake IL and Cook Counties. For the Des Plaines River...including Lincolnshire...Major flooding is forecast. * WHAT...Moderate flooding is occurring and major 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 further notice. * IMPACTS...At 15.0 feet, Structures threatened along IL-22 (Half-Day Road) just east of the river. Multiple structures threatened near and west of US-45 (Milwaukee Avenue) and Deerfield Road. Deerfield Road threatened near the river. Multiple trails inundated in Half-Day Forest Preserve. * ADDITIONAL DETAILS... - At 12:45 AM CDT Saturday the stage was 14.1 feet. - Recent Activity...Recent rainfall caused the river level to rise quickly from 13.6 feet this afternoon to now over 14 feet. - Forecast...The river is expected to rise to a crest near 15.5 feet late Saturday. It will then gradually fall through the early part of next week. - Flood stage is 12.5 feet. - http://www.weather.gov/safety/flood

🚨 Flood Warning issued April 18 at 1:32AM CDT by NWS Chicago IL 🚨
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...The Flood Warning continues for the following rivers in Illinois... Des Plaines River near Russell affecting Lake IL County. For the Des Plaines River...including Russell...Moderate flooding is forecast. * WHAT...Moderate flooding is occurring and moderate 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. At 9.5 feet, Residential structures threatened along Russell Road between the river and Kilbourne Road. Industrial parking lots threatened along Kilbourne Road. * ADDITIONAL DETAILS... - At 12:30 AM CDT Saturday the stage was 9.2 feet. - Recent Activity...Recent rainfall caused the river level to jump quickly from 8.7 feet this morning to now over 9 feet. - Forecast...The river is expected to crest at just over 9 feet early Saturday before gradually falling over the next few days. - Flood stage is 7.0 feet. - http://www.weather.gov/safety/flood

🚨 Flood Warning issued April 18 at 1:33AM CDT by NWS Chicago IL 🚨
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LOT issues Area Forecast Discussion (AFD) at Apr 18, 12:27 AM CDT
at Sat, 18 Apr 2026 05:27:27 +0000 via IEMbot
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Watseka [Iroquois Co, IL] Emergency Mngr reports Tstm Wnd Dmg at 17 Apr, 10:11 PM CDT -- Emergency manager reported extensive tree damage in Watseka, particularly around the southe... at Sat, 18 Apr 2026 04:52:50 +0000 via IEMbot
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LOT issues Hazardous Weather Outlook (HWO) at Apr 17, 11:56 PM CDT
at Sat, 18 Apr 2026 04:56:18 +0000 via IEMbot
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2 SW Papineau [Iroquois Co, IL] Public reports Tstm Wnd Gst of M62 MPH at 17 Apr, 10:15 PM CDT -- Measured at an Ambient PWS.
at Sat, 18 Apr 2026 04:32:26 +0000 via IEMbot
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4 NNE Teft [Porter Co, IN] Public reports Tstm Wnd Gst of M58 MPH at 17 Apr, 11:07 PM CDT -- Measured at an Ambient PWS.
at Sat, 18 Apr 2026 04:34:26 +0000 via IEMbot
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South Beloit [Winnebago Co, IL] Public reports Hail of ping pong ball size (E1.50 Inch) at 17 Apr, 5:20 PM CDT -- Report from mPING: Ping Pong Ball (1.50 in.).
at Sat, 18 Apr 2026 04:40:28 +0000 via IEMbot
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...The Flood Warning continues for the following rivers in Illinois... Fox River at Montgomery affecting Kendall and Kane 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, Montgomery, Dayton...Moderate flooding is forecast. * WHAT...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 11:00 PM CDT Friday the stage was 13.5 feet. - Forecast...The river will remain near flood stage for the next several days. - Flood stage is 13.5 feet. - http://www.weather.gov/safety/flood

...The Flood Warning continues for the following rivers in Illinois... Fox River at Montgomery affecting Kendall and Kane 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, Montgomery, Dayton...Moderate flooding is forecast. * WHAT...Moderate 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. At 12.0 feet, Structures threatened along River Street, Johnson Street, and Maiden Lane in East Dundee. North Harrison Street threatened near Riverside Park in Algonquin. Washington Street threatened in Carpentersville. Water Street, Edwards Avenue, and Elgin Avenue threatened in East Dundee. Bayview Road threatened in Elgin. Low-lying areas of Festival Park are threatened in Elgin. * ADDITIONAL DETAILS... - At 10:30 PM CDT Friday the stage was 10.9 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:30 PM CDT Friday was 10.9 feet. The river has begun to rise due to recent rainfall. - Forecast...The river is now expected to crest near 11.5 to 12.0 feet late next week due to recent rainfall. - Flood stage is 9.5 feet. - Flood History...This crest compares to a previous crest of 11.8 feet on 05/23/2020. - http://www.weather.gov/safety/flood

🚨 Flood Warning issued April 17 at 11:24PM CDT by NWS Chicago IL 🚨
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1 WSW Buckley [Iroquois Co, IL] Emergency Mngr reports Tstm Wnd Dmg at 17 Apr, 9:51 PM CDT -- Report of semi trucks blown over on I-57 near mile marker 270 southwest of Buckley. Ti... at Sat, 18 Apr 2026 04:08:48 +0000 via IEMbot
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LOT cancels Tornado Watch (Benton, Jasper, Lake, Newton, Porter [IN] and Burns Harbor to Michigan City IN, Calumet Harbor IL to Gary IN, Gary to Burns Harbor IN [LM]) .
at Sat, 18... at Sat, 18 Apr 2026 04:19:57 +0000 via IEMbot
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...Forecast flooding changed from Minor to Moderate severity for the following rivers in Illinois... Des Plaines River near Russell affecting Lake IL County. * WHAT...Minor flooding is occurring and moderate 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 9.5 feet, Residential structures threatened along Russell Road between the river and Kilbourne Road. Industrial parking lots threatened along Kilbourne Road. * ADDITIONAL DETAILS... - At 10:30 PM CDT Friday the stage was 9.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:30 PM CDT Friday was 9.0 feet. The river has begun to rise due to recent rainfall. - Forecast...The river is expected to crest overnight near 9.0 feet due to recent rainfall. - Flood stage is 7.0 feet. - Flood History...This crest compares to a previous crest of 9.0 feet on 05/01/2020. - http://www.weather.gov/safety/flood

🚨 Flood Warning issued April 17 at 11:13PM CDT by NWS Chicago IL 🚨
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...The Flood Warning continues for the following rivers in Illinois... Des Plaines River near Gurnee affecting Lake IL County. Des Plaines River at Lincolnshire affecting Cook and Lake IL Counties. * 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 Friday, April 24. * IMPACTS...At 10.0 feet, Residences threatened along Kilbourne Road and near O'Plaine Road and McClure Avenue in Gurnee. Businesses threatened along Old Grand Avenue near IL-132 in Gurnee. IL-132 (Grand Avenue) is threatened east of the river in Gurnee. * ADDITIONAL DETAILS... - At 10:30 PM CDT Friday the stage was 9.4 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:30 PM CDT Friday was 9.4 feet. The river has begun to rise due to recent rainfall. - Forecast...The river is expected to crest near 10.0 feet on Sunday. - Flood stage is 7.0 feet. - Flood History...This crest compares to a previous crest of 9.8 feet on 05/20/2020. - http://www.weather.gov/safety/flood

...The Flood Warning continues for the following rivers in Illinois... Des Plaines River near Gurnee affecting Lake IL County. Des Plaines River at Lincolnshire affecting Cook and Lake IL Counties. * 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 further notice. * 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. At 15.0 feet, Structures threatened along IL-22 (Half-Day Road) just east of the river. Multiple structures threatened near and west of US-45 (Milwaukee Avenue) and Deerfield Road. Deerfield Road threatened near the river. Multiple trails inundated in Half-Day Forest Preserve. * ADDITIONAL DETAILS... - At 10:45 PM CDT Friday the stage was 13.8 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:45 PM CDT Friday was 13.8 feet. The river has begun to rise due to recent rainfall. - Forecast...The river is now expected to crest near 15.0 feet late Saturday due to recent rainfall. - Flood stage is 12.5 feet. - Flood History...This crest compares to a previous crest of 15.1 feet on 09/14/2019. - http://www.weather.gov/safety/flood

🚨 Flood Warning issued April 17 at 11:13PM CDT until April 24 at 11:01AM CDT by NWS Chicago IL 🚨
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For the following areas... Nearshore Waters from Burns Harbor to Michigan City... Open Waters from Winthrop Harbor to Michigan City out to Mid Lake... At 1059 PM CDT, strong thunderstorms were located along a line extending from 26 nm northwest of St. Joseph Light to 20 nm northwest of New Buffalo to 16 nm northwest of Michigan City to near Burns Harbor, moving east at 30 knots. HAZARD...Wind gusts to nearly 50 knots. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... Burns Harbor.

🚨 Special Marine Warning issued April 17 at 11:00PM CDT until April 17 at 11:30PM CDT by NWS Chicago IL 🚨
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LOT continues Severe Thunderstorm Warning [tornado: POSSIBLE, damage threat: CONSIDERABLE, wind: 70 MPH (OBSERVED), hail: <.75 IN (RADAR INDICATED)] for Benton, Jasper, Lake, Ne... at Sat, 18 Apr 2026 03:47:28 +0000 via IEMbot
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LOT continues Flood Warning for Des Plaines River near Des Plaines [IL] until further notice
at Sat, 18 Apr 2026 03:55:54 +0000 via IEMbot
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LOT continues Flood Warning for Rock River at Latham Park [IL] until further notice
at Sat, 18 Apr 2026 03:57:15 +0000 via IEMbot
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3 NE Navy Pier [Lmz741 Co, IL] C-Man Station reports Tstm Wnd Gst of M64 MPH at 17 Apr, 10:12 PM CDT -- The Harrison-Dever Crib recorded a 56 kt wind gust.
at Sat, 18 Apr 2026 04:02:17 +0000 via IEMbot
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...The Flood Warning continues for the following rivers in Illinois... Rock River at Byron affecting Ogle County. Rock River at Rockton affecting Winnebago County. Rock River at Latham Park affecting Winnebago County. * WHAT...Minor flooding is occurring and moderate flooding is forecast. * WHERE...Rock River from Confluence with Kishwaukee River to Castle Rock State Park near Oregon, including the Byron gauge. * WHEN...Until further notice. * IMPACTS...At 15.5 feet, Water threatens lower sections of the water treatment plant property in Byron. Water threatens IL-2 west of Byron. * ADDITIONAL DETAILS... - At 10:15 PM CDT Friday the stage was 13.2 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:15 PM CDT Friday was 13.2 feet. - Forecast...The river is now expected to crest near 14.5 feet on Monday based upon the latest rainfall estimates. - Flood stage is 13.0 feet. - Flood History...This crest compares to a previous crest of 15.2 feet on 02/22/2018. - http://www.weather.gov/safety/flood

...The Flood Warning continues for the following rivers in Illinois... Rock River at Byron affecting Ogle County. Rock River at Rockton affecting Winnebago County. Rock River at Latham Park affecting Winnebago County. * 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. At 13.5 feet, Old River Road threatened west of Roscoe Bridge. * ADDITIONAL DETAILS... - At 9:30 PM CDT Friday the stage was 10.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 PM CDT Friday was 10.5 feet. - Forecast...The river is now expected to crest near 13.5 feet on Monday based upon the latest rainfall estimates. - Flood stage is 10.0 feet. - Flood History...This crest compares to a previous crest of 13.5 feet on 02/26/2018. - http://www.weather.gov/safety/flood

...The Flood Warning continues for the following rivers in Illinois... Rock River at Byron affecting Ogle County. Rock River at Rockton affecting Winnebago County. Rock River at Latham Park affecting Winnebago County. * 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 11.5 feet, Queen Oaks Drive is threatened in Machesney Park. Lower-level of elevated structures threatened along Harbor Lights Court west of Machesney Park. Ritter Drive is threatened north of Baldwin Drive in Machesney Park. At 12.0 feet, Low-lying sections of Shorewood Park are inundated in Loves Park. At 12.5 feet, Residences threatened along Harbor Oaks Drive north of Machesney Park. Numerous residences are threatened near the river and Shore Drive. Low-lying sections of Rockford Country Club are inundated. * ADDITIONAL DETAILS... - At 9:30 PM CDT Friday the stage was 9.6 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 PM CDT Friday was 9.6 feet. - Forecast...The river is expected to crest near 13 feet on Monday based upon the latest rainfall estimates. - Flood stage is 9.0 feet. - Flood History...This crest compares to a previous crest of 12.8 feet on 02/26/2018. - http://www.weather.gov/safety/flood

🚨 Flood Warning issued April 17 at 10:57PM CDT by NWS Chicago IL 🚨
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...The National Weather Service in Chicago IL has issued a Flood Warning for the following rivers in Illinois... Des Plaines River at Riverside affecting Cook County. For the Des Plaines River...including Riverside...Minor flooding is forecasted. * WHAT...Minor flooding is forecasted. * WHERE...Des Plaines River from Roosevelt Road in Forest Park downstream to Hodgkins, including the Riverside gauge. * WHEN...From Saturday afternoon to early Monday morning. * IMPACTS...At 8.0 feet, Park areas are inundated near the confluence of Des Plaines River and Salt Creek. * ADDITIONAL DETAILS... - At 9:45 PM CDT Friday the stage was 6.7 feet. - Forecast...The river is expected to rise above flood stage early tomorrow afternoon to a crest of 7.9 feet Sunday morning. It will then fall below flood stage late Sunday evening. - Flood stage is 7.5 feet. - http://www.weather.gov/safety/flood

🚨 Flood Warning issued April 17 at 10:59PM CDT until April 20 at 4:00AM CDT by NWS Chicago IL 🚨
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...The National Weather Service in Chicago IL has issued a Flood Watch for the following rivers in Illinois... Rock River at Rockford (Auburn Street) affecting Winnebago County. * WHAT...Flooding is possible. * WHERE...Rock River from Shorewood Park in Loves Park downstream to confluence with Kishwaukee River, including the Rockford (Auburn Street) gauge. * WHEN...From Sunday afternoon until further notice. * IMPACTS...At 5.0 feet, Low-lying areas of Blackhawk Island are inundated south of Rockford. Low-lying areas of Field Gem Park are inundated south of Rockford. At 5.5 feet, Low-lying sections of the Rock River Recreation Trail are threatened in Rockford. Riverview Mobile Home Park is threatened in Rockford. At 6.5 feet, River Bluff Court and River Court are threatened in Loves Park. Marinelli Field is threatened in Blackhawk Park. * ADDITIONAL DETAILS... - At 9:45 PM CDT Friday the stage was 4.2 feet. - Forecast...Flood stage may be reached based on the latest rainfall estimates. The river is expected to crest on Monday. - Flood stage is 6.0 feet. - http://www.weather.gov/safety/flood

🚨 Flood Watch issued April 17 at 10:57PM CDT by NWS Chicago IL 🚨
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At 1056 PM CDT/1156 PM EDT/, severe thunderstorms were located along a line extending from 6 miles northwest of Porter to near Hebron to near Hanging Grove, moving northeast at 65 mph. This line of storms has a history of producing winds of 60 to 70 mph. HAZARD...70 mph wind gusts. SOURCE...Law enforcement. IMPACT...Expect considerable tree damage. Damage is likely to mobile homes, roofs, and outbuildings. Locations impacted include... Gary, Portage, Merrillville, Valparaiso, Hobart, Chesterton, Rensselaer, DeMotte, Hebron, Fowler, Otterbein, Remington, Wheatfield, Lake Station, Lakes of the Four Seasons, South Haven, Porter, Winfield, Roselawn, New Chicago, Kouts, Oxford, Burns Harbor, Ogden Dunes, and Boswell.

🚨 Severe Thunderstorm Warning issued April 17 at 10:57PM CDT until April 17 at 11:15PM CDT by NWS Chicago IL 🚨
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...The Flood Warning continues for the following rivers in Illinois... Des Plaines River near Des Plaines affecting Cook County. For the Des Plaines River...including Des Plaines, Riverside...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecasted to continue. * WHERE...Des Plaines River from Palatine Road in Prospect Heights downstream to Irving Park Road in Chicago, including the Des Plaines gauge. * WHEN...Until further notice. * IMPACTS...At 17.0 feet, Central Road and Golf Road are threatened in Des Plaines. * ADDITIONAL DETAILS... - At 10:45 PM CDT Friday the stage was 16.3 feet. - Forecast...The river is expected to rise to a crest of 17.1 feet tomorrow evening. It will then be slow to fall into next week. - Flood stage is 15.0 feet. - http://www.weather.gov/safety/flood

🚨 Flood Warning issued April 17 at 10:55PM CDT by NWS Chicago IL 🚨
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LOT continues Marine Warning [waterspout: POSSIBLE, wind: 49 KTS, hail: 0.00 IN] for Burns Harbor to Michigan City IN, Calumet Harbor IL to Gary IN, Gary to Burns Harbor IN, Lake M... at Sat, 18 Apr 2026 03:28:15 +0000 via IEMbot
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LOT updates Tornado Watch (expires Cook, DuPage, Ford, Iroquois, Kankakee, Will [IL] and Northerly Island to Calumet Harbor IL, Wilmette Harbor to Northerly Island IL, Winthrop Har... at Sat, 18 Apr 2026 03:37:15 +0000 via IEMbot
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