Severe · Special Marine WarningThis alert has expired. It is kept for reference.
Special Marine Warning issued September 3 at 12:16PM EDT until September 3
Affecting St. Clair River; Lake St. Clair Open Lake (U.S. Portion)
In effect until: Sep 3, 2026, 4:45 PM
St. Clair River; Lake St. Clair Open Lake (U.S. Portion)
Likely impact; effects through 4:45 PM.
Move to safe harbor immediately as gusty winds and high waves are expected.
Read the original bulletin (official text)
For the following areas... Lake St. Clair Open Lake (U.S. Portion)... St. Clair River... At 1216 PM EDT, severe thunderstorms were located along a line extending from 7 nm northwest of St. Clair to Algonac to 9 nm south of St Clair Flats Old Channel Light, moving east at 35 knots. HAZARD...Wind gusts in excess of 50 knots. SOURCE...Radar indicated. IMPACT...Boats could suffer significant structural damage in high winds. Small craft could capsize in suddenly higher waves. severe thunderstorms will be near... Algonac and St. Clair around 1220 PM EDT.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™