Special Marine Warning Issued for Detroit River, St. Clair River and Lake St. Clair
This alert is no longer in effect.
NOAA issued it on May 17, 2026, 3 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.
NWS Detroit/Pontiac has issued a Special Marine Warning for strong thunderstorms with 40-knot wind gusts and small hail until 4:00 PM EDT.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Southeast Michigan Waters
- Issued
- May 17, 2026
- Issuing authority
- NWS Detroit/Pontiac MI
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 3 months ago; use the issuing agency's live warning service for current conditions in Southeast Michigan Waters.
Alert Details
A Special Marine Warning has been issued by the National Weather Service Detroit/Pontiac MI. The alert is effective from 2:49 PM EDT on May 9, 2026 until 4:00 PM EDT on May 9, 2026.
Affected Areas
The warning covers St. Clair River, Detroit River, and Lake St. Clair Open Lake (U.S. Portion). Strong thunderstorms will impact Port Huron, New Baltimore, St. Clair, St. Clair Shores, Mt Clemens Harbor Of Refuge, Metro Beach Metropark Marina, Algonac, St Clair Flats Old Channel Light, The Ambassador Bridge, Grosse Pointe, Belle Isle, Wyandotte, Gibraltar, Elizabeth Park Marina, and Grosse Ile.
What You Should Do
Move to safe harbor until hazardous weather passes.
Expected Conditions
At 2:48 PM EDT, strong thunderstorms were located along a line extending from near Lakeport to 14 nm northwest of St. Clair Shores to 29 nm northwest of Monroe Harbor, moving east at 25 knots. Hazards include wind gusts to 40 knots and small hail.
Timeline
The alert is in effect from 2:49 PM EDT until 4:00 PM EDT on May 9, 2026.
Original source: NOAA Official Notice ↗
Related Weather Alerts
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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 (1,054 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to May 17, 2026.
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