Special Marine Warning issued August 16 at 12:44AM CDT until August 16 at 2:45AM CDT by NWS Chicago IL

SMWLOT 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 245 AM CDT. * At 1243 AM CDT, strong thunderstorms with a leading outflow boundary were located along a line extending from near Aurora to near Joliet to 32 nm south of Midway Airport, moving east at 35 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Automated land-based observations. 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 Belmont Harbor.

What to do: Move to safe harbor immediately as gusty winds and high waves are expected.

Issued by NWS Chicago IL; in effect until Sun, 16 Aug 2026 07:45:00 GMT.

Source: National Weather Service (NOAA). Factual summary of a public release; not financial advice.

AI-assisted report. Disclosed per Moondial News integrity policy.