Active Weather Alerts
Special Marine Warning
Issued: 4:54 PM Aug. 9, 2026 – National Weather Service
The National Weather Service in Chicago has issued a * Special Marine Warning for... Nearshore Waters from Winthrop Harbor to Wilmette Harbor... Open Waters from Winthrop Harbor to Wilmette Harbor out to Mid Lake... * Until 200 PM CDT. * At 1153 AM CDT, strong thunderstorms were located along a line extending from near Racine to 10 nm northeast of McHenry to 27 nm northwest of Elgin, moving east at 35 knots. Storms will be near the nearshore waters around 1230 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... Winthrop Harbor and Waukegan Harbor. PRECAUTIONARY/PREPAREDNESS ACTIONS... && HAIL...<.75IN; WIND...>34KTS
Severe Thunderstorm Watch
Issued: 4:43 PM Aug. 9, 2026 – National Weather Service
CW . ADJACENT COASTAL WATERS INCLUDED ARE SHEBOYGAN TO PORT WASHINGTON WI PORT WASHINGTON TO NORTH POINT LIGHT WI NORTH POINT LIGHT TO WIND POINT WI WIND POINT WI TO WINTHROP HARBOR IL LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5NM OFFSHORE TO MID LAKE LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5NM OFFSHORE TO MID LAKE LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5NM OFFSHORE TO MID LAKE LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5NM OFFSHORE TO MID LAKE WINTHROP HARBOR TO WILMETTE HARBOR IL LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5NM OFFSHORE TO MID LAKE
Marine Weather Statement
Issued: 4:25 PM Aug. 9, 2026 – National Weather Service
A Marine Weather Statement has been issued for the following areas... Nearshore Waters from Winthrop Harbor to Wilmette Harbor... Open Waters from Winthrop Harbor to Wilmette Harbor out to Mid Lake... At 1124 AM CDT, Doppler radar indicated strong thunderstorms, capable of producing winds to around 30 knots. These thunderstorms were located along a line extending from 15 nm west of Oak Creek to 17 nm north of McHenry to 36 nm northwest of Elgin, moving southeast at 30 knots. These storms will approach the nearshore around or shortly after 12 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until these storms pass. These strong thunderstorms will likely produce winds to around 30 knots, and could pose a serious hazard for boaters. A special marine warning may eventually be required when these strong thunderstorms reaches the nearshore waters. Boaters should consider heading for shore before these strong thunderstorms arrives. &&
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