Active Weather Alerts
Severe Thunderstorm Warning
Issued: 3:32 AM Apr. 3, 2026 – National Weather Service
The National Weather Service in Chicago has issued a * Severe Thunderstorm Warning for... Northeastern Cook County in northeastern Illinois... * Until 1115 PM CDT. * At 1032 PM CDT, severe thunderstorms were located along a line extending from Rogers Park to near Orland Park, moving northeast at 50 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Severe thunderstorms will be near... Chicago, Cicero, Evanston, Oak Lawn, Irving Park, West Ridge, West Town, Austin, South Lawndale, and Chicago Lawn around 1035 PM CDT. Roseland, South Shore, Chatham, and Hyde Park around 1040 PM CDT. South Deering around 1045 PM CDT. 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
Severe Thunderstorm Warning
Issued: 3:27 AM Apr. 3, 2026 – National Weather Service
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT FOR NORTHWESTERN WILL...EASTERN GRUNDY...SOUTHEASTERN DUPAGE AND SOUTH CENTRAL COOK COUNTIES... At 1027 PM CDT, severe thunderstorms were located along a line extending from Countryside to near Elwood to near Coal City, moving northeast at 45 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. These severe storms will be near... Chicago, Joliet, Orland Park, Tinley Park, Oak Lawn, Midway Airport, Burbank, Lockport, New Lenox, and Homer Glen around 1030 PM CDT. Brighton Park around 1035 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A tornado watch remains in effect for the warned area. Tornadoes can develop quickly from severe thunderstorms. Although a tornado is not immediately likely, if one is spotted act quickly and move to a place of safety inside a sturdy structure, such as a basement or small interior room. 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
Special Marine Warning
Issued: 3:24 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 midnight CDT. * At 1024 PM CDT, severe thunderstorms were located along a line extending from 12 nm south of Waukegan Harbor to Wilmette Harbor to 7 nm southwest of Midway Airport, moving east at 30 knots. HAZARD...Wind gusts in excess of 50 knots. SOURCE...Radar. IMPACT...Boats could suffer significant structural damage in high winds. Small craft could capsize in suddenly higher waves. * Severe thunderstorms will be near... Montrose Harbor, Monroe Harbor, 31st Street Harbor, Harrison-Dever Crib, Burnham Harbor, Belmont Harbor, Diversy Harbor, and DuSable Harbor around 1030 PM CDT. Jackson Park Harbor and 59th Street Marina around 1035 PM CDT. Calumet Harbor around 1040 PM CDT. Hammond Marina around 1045 PM CDT. Indiana Harbor around 1055 PM CDT. HAIL...0.00IN WIND...50KTS
Special Marine Warning
Issued: 2:40 AM Apr. 3, 2026 – National Weather Service
The National Weather Service in Chicago has issued a * Special Marine Warning for... Nearshore Waters from Northerly Island to Calumet Harbor... Nearshore Waters from Calumet Harbor to Michigan City... Open Waters from Winthrop Harbor to Michigan City out to Mid Lake... * Until 1045 PM CDT. * At 940 PM CDT, strong thunderstorms were located along a line extending from 23 nm northwest of New Buffalo to near Hammond Marina, moving northeast at 55 knots. HAZARD...Wind gusts to nearly 50 knots. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... Calumet Harbor, Indiana Harbor, Burns Harbor, Marina Shores at Dune Harbor, 59th Street Marina, Hammond Marina, and Jackson Park Harbor. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && HAIL...0.00IN; WIND...49KTS
Small Craft Advisory
Issued: 2:08 AM Apr. 3, 2026 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT FRIDAY... * WHAT...Southwest winds to 30 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 4 AM CDT Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in 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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