Special Marine Warning for St. Clair River and Detroit River Areas
This alert is no longer in effect.
NOAA issued it on April 15, 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 Detroit/Pontiac MI for the St. Clair River, Detroit River, and Lake St. Clair, with wind gusts up to 40 knots and small hail expected until 3:00 AM EDT.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Great Lakes Region, specifically St. Clair River, Detroit River, and Lake St. Clair
- Issued
- April 15, 2026
- Issuing authority
- NWS
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 Great Lakes Region, specifically St. Clair River, Detroit River, and Lake St. Clair.
Special Marine Warning Alert
Alert Details
The National Weather Service in Detroit/Pontiac, MI, has issued a Special Marine Warning. This alert is effective from 12:57 AM EDT on April 15, 2026, until 3:00 AM EDT on the same date.
Affected Areas
This warning affects the St. Clair River, Detroit River, and the U.S. portion of Lake St. Clair Open Lake. Specific locations include New Baltimore, St. Clair Shores, The Ambassador Bridge, Wyandotte, Mt Clemens Harbor Of Refuge, Metro Beach Metropark Marina, Grosse Pointe, Belle Isle, St Clair Flats Old Channel Light, Algonac, and Gibraltar.
What You Should Do
Avoid the affected areas immediately due to the risk of wind gusts and small hail that could damage small craft, as indicated in the alert.
Expected Conditions
Hazards include wind gusts up to 40 knots and small hail. Strong thunderstorms are moving southeast at 35 knots.
Timeline
The warning is effective from 12:57 AM EDT on April 15, 2026, and expires at 3:00 AM EDT on April 15, 2026.
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 (1,020 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to April 15, 2026.
Frequently Asked Questions
Common questions about this NWS weather alert.