Active Weather Alerts
Special Marine Warning
Issued: 5:53 PM Aug. 9, 2026 – National Weather Service
The National Weather Service in Chicago has issued a * Special Marine Warning for... Nearshore Waters from Wilmette Harbor to Calumet Harbor... Nearshore Waters from Calumet Harbor to Michigan City... Open Waters from Wilmette Harbor to Michigan City out to Mid Lake... * Until 345 PM CDT. * At 1252 PM CDT, strong thunderstorms were located along a line extending from 13 nm north of Ohare Airport to near Elgin to 10 nm northwest of Aurora, moving southeast at 25 knots. Storms will be nearing the Illinois nearshore waters around 2 PM. HAZARD...Wind gusts 34 knots or greater and small hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... Harrison-Dever Crib, Wilmette Harbor, 31st Street Harbor, Monroe Harbor, Burns Harbor, Calumet Harbor, Indiana Harbor, Montrose Harbor, Burnham Harbor, Hammond Marina, Jackson Park Harbor, and Marina Shores at Dune Harbor. PRECAUTIONARY/PREPAREDNESS ACTIONS... && HAIL...<.75IN; WIND...>34KTS
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