Active Weather Alerts
Special Marine Warning
Issued: 9:07 AM Aug. 11, 2026 – National Weather Service
...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 500 AM CDT... For the following areas... Nearshore Waters from Winthrop Harbor to Wilmette Harbor... Open Waters from Winthrop Harbor to Michigan City out to Mid Lake... At 407 AM CDT, a severe thunderstorm was located 12 nm northeast of Wilmette Harbor, moving southeast at 20 knots. HAZARD...Wind gusts 34 knots or greater and large hail. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. The severe thunderstorm will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && HAIL...>.75IN; WIND...>34KTS
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