NWS Green Bay WIMA.W 0027June 30, 2026
Special Marine Warning: Rock Island Passage to Sturgeon Bay WI, Sturgeon Bay to Two Rivers WI, Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM offshore to mid lake and 1 more
The National Weather Service office in Green Bay issued a special marine warning for Rock Island Passage to Sturgeon Bay WI, Sturgeon Bay to Two Rivers WI, Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM offshore to mid lake and 1 more, which was in force until 7:30 p.m. local time on June 30. It was the 27th special marine warning the NWS office in Green Bay issued in 2026.
ExpiredWarning
In force for 57 minutes; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Green Bay WI
- Area
- Rock Island Passage to Sturgeon Bay WI, Sturgeon Bay to Two Rivers WI, Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM offshore to mid lake and 1 more
- Level
- Warning
- Issued
- 6:33 p.m. CDT, June 30, 2026
- Expires
- 7:30 p.m. CDT, June 30, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- KGRB MA.W 0027
- 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
SMWGRB The National Weather Service in Green Bay has issued a * Special Marine Warning for... Nearshore waters from Washington Island to Two Rivers... Open waters of Lake Michigan from Rock Island Passage to Two Rivers... * Until 730 PM CDT. * At 633 PM CDT, a strong thunderstorm was located 9 NM northwest of Algoma, or 9 NM northeast of Bay Shore Park, moving east at 40 knots. HAZARD...Wind gusts to nearly 50 knots. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * The strong thunderstorm will be near... Algoma around 645 PM CDT. Sturgeon Bay and Sturgeon Bay Ship Canal Light around 650 PM CDT.
What the agency told people to do
Move to safe harbor until hazardous weather passes. Boaters should seek safe harbor immediately until this storm passes. Wind gusts 34 knots or greater, high waves, dangerous lightning, and heavy rain are possible with this storm.
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.