Weather Alert Watch
Severe Special Marine Warning

Special Marine Warning for Winthrop Harbor to Wilmette Harbor IL; Wilmette Harbor to Northerly Island IL; Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM offshore to Mid Lake +1 more

For the following areas... Nearshore Waters from Winthrop Harbor to Northerly Island... Open Waters from Winthrop Harbor to Michigan City out to Mid Lake... At 1221 AM CDT, strong thunderstorms were located along a line extending from 13 nm north of St....

USWinthrop Harbor to Wilmette Harbor IL; Wilmette Harbor to Northerly Island IL; Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM offshore to Mid Lake; Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake

Official alert brief

For the following areas... Nearshore Waters from Winthrop Harbor to Northerly Island... Open Waters from Winthrop Harbor to Michigan City out to Mid Lake... At 1221 AM CDT, strong thunderstorms were located along a line extending from 13 nm north of St. Joseph Light to near Ohare Airport, moving northeast at 25 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... Harrison-Dever Crib, Montrose Harbor, Wilmette Harbor, Belmont Harbor, Diversy Harbor, and DuSable Harbor.

Instructions

Move to safe harbor until hazardous weather passes.