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Severe · Special Marine WarningThis alert has expired. It is kept for reference.

Special Marine Warning issued September 5 at 1:06AM EDT until September 5

Affecting St Joseph to South Haven MI; Lake Michigan from St Joseph to South Haven MI 5NM offshore to Mid Lake

In effect until: Sep 5, 2026, 5:45 AM

St Joseph to South Haven MI; Lake Michigan from St Joseph to South Haven MI 5NM offshore to Mid Lake

Likely impact; effects through 5:45 AM.

Frequent lightning is occurring with this storm. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects.

Read the original bulletin (official text)
For the following areas...
Nearshore and Open Waters from St Joseph to South Haven MI...

At 105 AM EDT, a strong thunderstorm was located 9 nm north of St.
Joseph Light, moving east at 30 knots.

HAZARD...Wind gusts to 40 knots and small hail.

SOURCE...Radar indicated.

IMPACT...Small craft could be damaged in briefly higher winds and
suddenly higher waves.

Locations impacted include...
South Haven Light, St. Joseph Light, and St. Joseph.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™