Active Weather Alerts
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
River Flood Watch
Issued: 12:51 AM Apr. 3, 2026 – National Weather Service
...FLOOD WATCH REMAINS IN EFFECT FROM SATURDAY MORNING TO EARLY TUESDAY MORNING... * WHAT...Flooding is possible. * WHERE...Fox River Lower near New Munster. * WHEN...From Saturday morning to early Tuesday morning. * IMPACTS...At 11.5 feet, Water is in the yards of some homes in the Village of Salem Lakes and Town of Wheatland areas, including Riverside Dr and Shorewood Dr. There are 3-4 inches of water over 77th Street in the Town of Wheatland. * ADDITIONAL DETAILS... - At 7:00 PM CDT Thursday the stage was 8.7 feet. - Forecast...Flood stage may be reached Saturday morning. - Flood stage is 11.0 feet. - http://www.weather.gov/safety/flood && River forecasts are available for some but not all river gaging locations. The 7 day river forecast takes into account past precipitation, soil moisture conditions, and predicted precipitation for the basin. Precipitation is for the next 24 hours in the future from April through September and for 48 hours in the future from October through March. (Stages in ft.) Bank- Latest Forecast stages - Flood full observed ...for 7 pm... Location stage stage stage/time Fri Sat Sun Mon New Munster 11.0 10.0 8.73 7 pm 4/02 10.2 11.4 11.4 11.0 - Highest 24 hour change - observed in river stage - stage in (ft.) up to Highest stage - the last latest observed forecast in - 7 days stage next 7 days New Munster 8.73 7 pm 4/02 1.32 11.50 7 am 4/05 &&
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. &&
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