Special Marine Warning for Green Bay and Lake Michigan Areas
This alert is no longer in effect.
NOAA issued it on April 25, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
A Special Marine Warning has been issued by NWS Green Bay WI for parts of Green Bay and Lake Michigan, with wind gusts up to 40 knots expected until 8:30 PM CDT.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Green Bay and Lake Michigan, Wisconsin
- Issued
- April 25, 2026
- Issuing authority
- NWS Green Bay WI
Marine notices apply to named waters or shoreline zones. They may not describe conditions on land, even when the nearest place name is the same.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Green Bay and Lake Michigan, Wisconsin.
Alert Details
A Special Marine Warning has been issued by the National Weather Service (NWS) Green Bay WI. It is effective from 7:04 PM CDT until 8:30 PM CDT on April 17, 2026.
Affected Areas
The warning affects Green Bay south of the line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI; Green Bay south of the line from Oconto WI to Little Sturgeon Bay WI; 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; Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to Mid Lake; and Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid Lake. Specific locations impacted include Sherwood Point Light, Long Tail Point Light, Peshtigo Reef Light, Bay Shore Park, Whitefish Point, Kewaunee Pierhead Light, Eagle Bluff Light, Rawley Point Light, Green Bay Harbor Entrance Light, and Chambers Island.
What You Should Do
Move to safe harbor immediately as gusty winds and high waves are expected.
Expected Conditions
Wind gusts to 40 knots are anticipated.
Timeline
The alert is effective from 7:04 PM CDT on April 17, 2026, and will expire at 8:30 PM CDT on the same day.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,260 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to April 25, 2026.
Frequently Asked Questions
Common questions about this NWS weather alert.