Active Weather Alerts
Severe Thunderstorm Warning
Issued: 1:26 AM Apr. 3, 2026 – National Weather Service
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR NORTHWESTERN WILL...EASTERN DUPAGE AND COOK COUNTIES... At 826 PM CDT, severe thunderstorms were located along a line extending from 6 miles northeast of Kenilworth to near Willow Springs, moving east at 65 mph. HAZARD...70 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect considerable tree damage. Wind damage is also likely to mobile homes, roofs, and outbuildings. Locations impacted include... Chicago, Joliet, Naperville, Cicero, Hammond, Evanston, Bolingbrook, Skokie, Des Plaines, Orland Park, Tinley Park, Oak Lawn, Berwyn, Oak Park, Downers Grove, Glenview, Elmhurst, Lombard, Ohare Airport, Romeoville, Plainfield, Park Ridge, Calumet City, Addison, and Northbrook. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tornado Watch remains in effect until 1100 PM CDT for northeastern Illinois. Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building. && TORNADO...POSSIBLE; THUNDERSTORM DAMAGE THREAT...CONSIDERABLE; HAIL THREAT...RADAR INDICATED; MAX HAIL SIZE...1.00 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...70 MPH
Severe Thunderstorm Warning
Issued: 1:23 AM Apr. 3, 2026 – National Weather Service
The National Weather Service in Chicago has issued a * Severe Thunderstorm Warning for... Will County in northeastern Illinois... Southeastern Cook County in northeastern Illinois... * Until 930 PM CDT. * At 822 PM CDT, severe thunderstorms were located along a line extending from near Minooka to 7 miles east of Streator, moving northeast at 55 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Joliet, Hammond, Tinley Park, Calumet City, Chicago Heights, Lansing, Harvey, New Lenox, Munster, Park Forest, Homewood, Matteson, Mokena, Frankfort, Channahon, Minooka, Steger, Braidwood, Wilmington, Peotone, South Holland, Country Club Hills, Dyer, Hazel Crest, and Richton Park. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building. A Tornado Watch remains in effect until 1100 PM CDT for northeastern Illinois. && TORNADO...POSSIBLE; HAIL THREAT...RADAR INDICATED; MAX HAIL SIZE...1.00 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...60 MPH
Special Marine Warning
Issued: 12:52 AM Apr. 3, 2026 – National Weather Service
The National Weather Service in Chicago has issued a * Special Marine Warning for... Nearshore Waters from Winthrop Harbor to Calumet Harbor... Nearshore Waters from Calumet Harbor to Michigan City... Open Waters from Winthrop Harbor to Michigan City out to Mid Lake... * Until 945 PM CDT. * At 751 PM CDT, strong thunderstorms were located along a line extending from 7 nm west of Pleasant Prairie to 7 nm north of Aurora to 25 nm southwest of Joliet, moving east at 35 knots. HAZARD...Wind gusts to nearly 50 knots. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Strong thunderstorms will be near... Waukegan Harbor and Winthrop Harbor around 805 PM CDT. Wilmette Harbor around 820 PM CDT. Montrose Harbor, Monroe Harbor, Belmont Harbor, Diversy Harbor, and DuSable Harbor around 830 PM CDT. 31st Street Harbor, Harrison-Dever Crib, and Burnham Harbor around 835 PM CDT. Jackson Park Harbor and 59th Street Marina around 840 PM CDT. Calumet Harbor around 845 PM CDT. Hammond Marina around 850 PM CDT. Indiana Harbor around 855 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tornado Watch remains in effect until 1100 PM CDT for northeastern Illinois. && HAIL...0.00IN; WIND...49KTS
Tornado Watch
Issued: 11:53 PM Apr. 2, 2026 – National Weather Service
THE NATIONAL WEATHER SERVICE HAS EXTENDED TORNADO WATCH 89 TO INCLUDE THE FOLLOWING AREAS UNTIL 11 PM CDT THIS EVENING IN ILLINOIS THIS WATCH INCLUDES 4 COUNTIES IN NORTHEAST ILLINOIS COOK DUPAGE LAKE IL WILL THIS INCLUDES THE CITIES OF BOLINGBROOK, BUFFALO GROVE, CAROL STREAM, CHICAGO, DOWNERS GROVE, EVANSTON, GURNEE, JOLIET, LEMONT, LOMBARD, MUNDELEIN, NAPERVILLE, OAK LAWN, ORLAND PARK, PARK FOREST, SCHAUMBURG, WAUKEGAN, WHEATON, AND WILMINGTON.
Gale Warning
Issued: 8:55 PM Apr. 2, 2026 – National Weather Service
...GALE WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 4 AM CDT FRIDAY... * WHAT...For the Gale Warning, south winds to 40 kt and significant waves to 7 ft occasionally to 9 ft. For the Small Craft Advisory, southwest winds to 30 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Wilmette Harbor IL. * WHEN...For the Gale Warning, until 9 PM CDT this evening. For the Small Craft Advisory, from 9 PM this evening to 4 AM CDT Friday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. &&
Small Craft Advisory
Issued: 8:55 PM Apr. 2, 2026 – National Weather Service
...GALE WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 4 AM CDT FRIDAY... * WHAT...For the Gale Warning, south winds to 40 kt and significant waves to 7 ft occasionally to 9 ft. For the Small Craft Advisory, southwest winds to 30 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Wilmette Harbor IL. * WHEN...For the Gale Warning, until 9 PM CDT this evening. For the Small Craft Advisory, from 9 PM this evening to 4 AM CDT Friday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. &&
River Flood Watch
Issued: 3:00 PM Apr. 2, 2026 – National Weather Service
...FLOOD WATCH IN EFFECT FROM FRIDAY MORNING TO SUNDAY MORNING... * WHAT...Flooding is possible. * WHERE...Des Plaines River from Palatine Road in Prospect Heights downstream to Irving Park Road in Chicago, including the Des Plaines gauge. * WHEN...From Friday morning to Sunday morning. * IMPACTS...At 15.0 feet, Structures threatened at Methodist Campground in Des Plaines. Forest preserve roadways are threatened. * ADDITIONAL DETAILS... - At 9:45 AM CDT Thursday the stage was 10.6 feet. - Forecast...Flood stage may be reached tomorrow morning. - Flood stage is 15.0 feet. - http://www.weather.gov/safety/flood &&
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