Special Marine Warning Issued for Lake Michigan Near Wisconsin

Source: NOAA · Lake Michigan near Wisconsin

If you are in immediate danger, call emergency services now.

For real-time, official alerts and instructions for your exact location, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia) as applicable. This article is a data summary, not a substitute for the issuing agency's live warning.

Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.

NWS Milwaukee/Sullivan has issued a Special Marine Warning for Lake Michigan zones until 3:15 AM CDT due to a severe thunderstorm with high winds and hail.

Read this weather record in 30 seconds

Record type
Special Marine Warning
Affected area
Lake Michigan near Wisconsin
Issued
September 4, 2026
Issuing authority
NWS Milwaukee/Sullivan 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: publication date is recent, but current status is not stored on this page. Check the issuing agency's live warning service before acting because warnings can be updated, narrowed, or cancelled.

Alert Details

Special Marine Warning issued by NWS Milwaukee/Sullivan WI. Effective from September 4, 2026 at 2:11 AM CDT until September 4, 2026 at 3:15 AM CDT.

Affected Areas

Lake Michigan from Port Washington to North Point Light WI 5NM offshore to Mid Lake; Lake Michigan from North Point Light to Wind Point WI 5NM offshore to Mid Lake.

What You Should Do

Move to safe harbor until hazardous weather passes.

Expected Conditions

At 2:11 AM CDT, a severe thunderstorm was located 10 nm northeast of North Pt. Lt., moving east at 15 knots. Hazards include wind gusts 34 knots or greater and large hail. Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. The severe thunderstorm will remain over mainly open waters.

Timeline

Alert effective September 4, 2026 at 2:11 AM CDT and expires September 4, 2026 at 3:15 AM CDT.

Original source: NOAA Official Notice ↗

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.

Frequently Asked Questions

Common questions about this NWS weather alert.

What is this NWS weather alert about?
NWS Milwaukee/Sullivan has issued a Special Marine Warning for Lake Michigan zones until 3:15 AM CDT due to a severe thunderstorm with high winds and hail.
Which agency issued this alert?
This alert was issued by NOAA. The original notice is available at the source link at the bottom of this article.
How severe is this alert?
This alert is classified as "high" severity. Take precautions and monitor for updates.
What area is affected?
This alert affects Lake Michigan near Wisconsin. Check with NOAA for the most current geographic scope.
Where can I find more Weather Alerts updates?
Browse the full Weather Alerts feed on Areazine at areazine.com/weather/ for the latest updates from NOAA and other agencies.