NWS Chicago ILMA.W 0047June 28, 2026
Special Marine Warning: Winthrop Harbor to Wilmette Harbor IL, Wilmette Harbor to Northerly Island IL, Northerly Island to Calumet Harbor IL and 2 more
The National Weather Service office in Chicago issued a special marine warning for Winthrop Harbor to Wilmette Harbor IL, Wilmette Harbor to Northerly Island IL, Northerly Island to Calumet Harbor IL and 2 more, which was in force until 6:30 p.m. local time on June 28. It was the 47th special marine warning the NWS office in Chicago issued in 2026.
ExpiredWarning
In force for 2 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Chicago IL
- Area
- Winthrop Harbor to Wilmette Harbor IL, Wilmette Harbor to Northerly Island IL, Northerly Island to Calumet Harbor IL and 2 more
- Level
- Warning
- Issued
- 4:31 p.m. CDT, June 28, 2026
- Expires
- 6:30 p.m. CDT, June 28, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- KLOT MA.W 0047
- Official source
- National Weather Service: the notice at its source
NWS notices, June 2026The latest from the National Weather Service
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
SMWLOT The National Weather Service in Chicago has issued a * Special Marine Warning for... Nearshore Waters from Winthrop Harbor to Calumet Harbor... Open Waters from Winthrop Harbor to Michigan City out to Mid Lake... * Until 630 PM CDT. * At 429 PM CDT, National Weather Service meteorologists were tracking a region of strong southeasterly winds moving toward Lake Michigan. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar and land-based surface 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, Calumet Harbor, Winthrop Harbor, Montrose Harbor, Waukegan Harbor, Burnham Harbor, Jackson Park Harbor, Belmont Harbor, and 59th Street Marina.
What the agency told people to do
Move to safe harbor immediately as gusty winds and high waves are expected.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.