Active Weather Alerts
Flash Flood Warning
Issued: 3:38 AM Jul. 4, 2026 – National Weather Service
The National Weather Service in Chicago has issued a * Flash Flood Warning for... Southeastern Cook County in northeastern Illinois... * Until 145 AM CDT. * At 1038 PM CDT, Doppler radar and automated rain gauges indicated thunderstorms continuing to produce heavy rainfall with rainfall rates of 1 to 2 inches per hour. Up to 2.5 inches of rainfall has fallen so far in the Country Club Hills, Harvey, and Homewood areas, with multiple reports of roadway flooding received across portions of southern Cook County. Additional rainfall up to 1 inch is possible over the next 30 minutes. Worsening of flash flood impacts is imminent. HAZARD...Significant flash flooding. SOURCE...Radar and automated gauges. IMPACT...Rapid-onset, significant flooding of creeks, streams, drainage ditches, low-lying areas, and poor drainage areas. Widespread street and underpass flooding. Possible flooding of structures. Possible flooding of highways. * Some locations that will experience flash flooding include... Chicago, Hammond, Tinley Park, Calumet City, Chicago Heights, Lansing, Oak Forest, Harvey, Blue Island, Dolton, Park Forest, Homewood, Alsip, Matteson, Frankfort, Steger, South Holland, Country Club Hills, South Deering and Midlothian. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && FLASH FLOOD...RADAR AND GAUGE INDICATED; FLASH FLOOD DAMAGE THREAT...CONSIDERABLE; EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
Marine Weather Statement
Issued: 3:31 AM Jul. 4, 2026 – National Weather Service
...A STRONG THUNDERSTORM OVER THE WATERS... The areas affected include... Nearshore Waters from Winthrop Harbor to Wilmette Harbor... Open Waters from Winthrop Harbor to Wilmette Harbor out to Mid Lake... At 1030 PM CDT, Doppler radar indicated a strong thunderstorms, capable of producing winds to around 30 knots and frequent lightning. This thunderstorm was located near Wilmette Harbor, moving east at 20 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. Intense lightning is occurring with this storm. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects. &&
Flash Flood Warning
Issued: 3:09 AM Jul. 4, 2026 – National Weather Service
The National Weather Service in Chicago has issued a * Flash Flood Warning for... Southeastern Cook County in northeastern Illinois... Northwestern Lake IN County in northwestern Indiana... * Until 115 AM CDT. * At 1009 PM CDT, Doppler radar indicated thunderstorms with rainfall rates of 1 to 2 inches per hour moving into an area that have previously received multiple waves of rainfall. Up to 1.5 inches of rain have fallen, with an additional 1 to 2 inches possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding. SOURCE...Radar. IMPACT...Rapid-onset flooding of creeks, streams, drainage ditches, streets, underpasses, low-lying areas, and other poor drainage areas. * Some locations that will experience flash flooding include... Chicago, Hammond, Gary, Tinley Park, Oak Lawn, Calumet City, Chicago Heights, Roseland, South Shore, Englewood, Chicago Lawn, East Chicago, Schererville, Lansing, Oak Forest, Harvey, Highland, Blue Island, Munster and Dolton. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Warning means rapid-onset flooding is imminent or may already be occurring. Persons along creeks, drainage ditches, and other waterways should take immediate precautions to protect life and property. && FLASH FLOOD...RADAR INDICATED; EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
Severe Thunderstorm Warning
Issued: 3:05 AM Jul. 4, 2026 – National Weather Service
The National Weather Service in Chicago has issued a * Severe Thunderstorm Warning for... East central Will County in northeastern Illinois... Southeastern Cook County in northeastern Illinois... Lake County in northwestern Indiana... * Until 1115 PM CDT. * At 1005 PM CDT, a severe thunderstorm was located over Richton Park, or near Matteson, moving southeast at 30 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Hammond, Gary, Calumet City, Merrillville, Chicago Heights, Schererville, Hobart, Lansing, Oak Forest, Crown Point, Harvey, Highland, Munster, Park Forest, Homewood, Matteson, Cedar Lake, Steger, South Holland, Griffith, Country Club Hills, Dyer, St. John, Hazel Crest, and Richton Park. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && HAIL THREAT...RADAR INDICATED; MAX HAIL SIZE...<.75 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...60 MPH
Flood Advisory
Issued: 2:43 AM Jul. 4, 2026 – National Weather Service
...FLOOD ADVISORY IN EFFECT UNTIL 145 AM CDT SATURDAY... * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of northeast Illinois, including the following counties, Cook and Will. * WHEN...Until 145 AM CDT. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Roads and streets may be flooded. * ADDITIONAL DETAILS... - At 943 PM CDT, Doppler radar indicated heavy rain due to thunderstorms with rainfall rates of 1 to 2 inches per hour. Some locations have already received multiple waves of rainfall, with additional thunderstorms moving into the area. Urban flooding of yards and roadways may begin shortly. - Some locations that may experience flooding include... Chicago, Joliet, Elgin, Cicero, Hammond, Arlington Heights, Evanston, Schaumburg, Palatine, Skokie, Des Plaines, Orland Park, Tinley Park, Oak Lawn, Berwyn, Mount Prospect, Hoffman Estates, Oak Park, Glenview and Buffalo Grove. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Advisory means minor flooding along waterways and other poor drainage areas is imminent or may already be occurring. Persons in the advisory area should use caution and avoid flood waters. &&
Severe Thunderstorm Watch
Issued: 2:34 AM Jul. 4, 2026 – National Weather Service
SEVERE THUNDERSTORM WATCH 451 REMAINS VALID UNTIL 2 AM CDT SATURDAY FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS WINTHROP HARBOR TO WILMETTE HARBOR IL WILMETTE HARBOR TO NORTHERLY ISLAND IL NORTHERLY ISLAND TO CALUMET HARBOR IL CALUMET HARBOR IL TO GARY IN GARY TO BURNS HARBOR IN BURNS HARBOR TO MICHIGAN CITY IN LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5NM OFFSHORE TO MID LAKE LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5NM OFFSHORE TO MID LAKE
Severe Thunderstorm Watch
Issued: 2:34 AM Jul. 4, 2026 – National Weather Service
SEVERE THUNDERSTORM WATCH 451 REMAINS VALID UNTIL 2 AM CDT /3 AM EDT/ SATURDAY FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 11 COUNTIES IN CENTRAL ILLINOIS LIVINGSTON IN EAST CENTRAL ILLINOIS FORD IROQUOIS IN NORTH CENTRAL ILLINOIS LA SALLE IN NORTHEAST ILLINOIS COOK DUPAGE GRUNDY KANE KANKAKEE KENDALL WILL IN INDIANA THIS WATCH INCLUDES 5 COUNTIES IN NORTHWEST INDIANA BENTON JASPER LAKE IN NEWTON PORTER THIS INCLUDES THE CITIES OF AURORA, BOLINGBROOK, BOURBONNAIS, CAROL STREAM, CHESTERTON, CHICAGO, COAL CITY, DEMOTTE, DOWNERS GROVE, DWIGHT, ELGIN, EVANSTON, FAIRBURY, FOWLER, GARY, GIBSON CITY, GILMAN, HAMMOND, JOLIET, KANKAKEE, KENTLAND, LA SALLE, LEMONT, LOMBARD, MARSEILLES, MENDOTA, MERRILLVILLE, MINOOKA, MOROCCO, MORRIS, NAPERVILLE, OAK LAWN, ORLAND PARK, OSWEGO, OTTAWA, OXFORD, PARK FOREST, PAXTON, PLANO, PONTIAC, PORTAGE, RENSSELAER, ROSELAWN, SCHAUMBURG, STREATOR, VALPARAISO, WATSEKA, WHEATON, WILMINGTON, AND YORKVILLE.
Flood Watch
Issued: 1:32 AM Jul. 4, 2026 – National Weather Service
...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT SATURDAY... * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of Illinois, including the following areas, Central Cook, De Kalb, DuPage, Eastern Will, Grundy, Kane, Kendall, La Salle, Lake IL, Northern Cook, Northern Will, Southern Cook and Southern Will and northwest Indiana, including the following area, Lake IN. * WHEN...Until 4 AM CDT Saturday. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Roads and streets may be flooded. * ADDITIONAL DETAILS... - Multiple rounds of heavy rainfall from thunderstorms possible across the area this evening into the overnight. Rain rates in excess of 1 to 2 inches per hour over areas that have previously received heavy rainfall may lead to flooding. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch for flash flooding means rapid-onset flooding is possible, but not yet certain, based upon the latest forecasts. Flash flooding is a dangerous situation. Persons with interests along area rivers, creeks, and other waterways should monitor the latest forecasts and be prepared to take action should flooding develop. &&
Local Radar