Special Marine Warning for St. Clair River
Official alert fields
What you need to know
- Applies to
- St. Clair River
- Effective
- Ended
- Official severity
- Severe
- Official urgency
- Immediate
- Official certainty
- Likely
What is happening
SMWDTX The National Weather Service in Detroit/Pontiac has issued a * Special Marine Warning for... St. Clair River... * Until 800 PM EDT. * At 710 PM EDT, a severe thunderstorm capable of producing waterspouts, damaging wind, and large hail, was located 8 nm west of Port Huron, moving southeast at 35 knots....
What the bulletin says to do
Boaters should seek safe harbor immediately until this storm passes. Wind gusts to nearly 50 knots, large hail, high waves, dangerous lightning, and heavy rain are possible with this storm. Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. Seek safe harbor immediately.
Full official description
Bulletin details
SMWDTX The National Weather Service in Detroit/Pontiac has issued a * Special Marine Warning for... St. Clair River... * Until 800 PM EDT. * At 710 PM EDT, a severe thunderstorm capable of producing waterspouts, damaging wind, and large hail, was located 8 nm west of Port Huron, moving southeast at 35 knots. HAZARD...Waterspouts, wind gusts to nearly 50 knots, and large hail. SOURCE...Radar. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. * The severe thunderstorm will be near... St. Clair around 720 PM EDT.
Lifecycle record
Official revisions
- Alert
Special Marine Warning issued September 2 at 7:10PM EDT until September 2 at 8:00PM EDT by NWS Detroit/Pontiac MI
Official revision
Source and limitations
Publisher: Weather Alert Watch. Primary source: NWS Detroit/Pontiac MI. This page reorganizes official fields and does not add a forecast or expand the affected area.
- CAP status
- Actual
- Message type
- Alert
- Last collected