Weather Alert WatchOfficial-source alert index
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Ended official alertUpdated

Special Marine Warning for Harbor Beach to Port Sanilac MI; Port Sanilac to Port Huron MI; Lake Huron from Harbor Beach to Port Sanilac 5NM Off Shore to US/Canadian border +1 more

This alert has ended.Kept for recent context. Do not use it as a current warning.

Official alert fields

What you need to know

Effective
Ended
Official severity
Severe
Official urgency
Immediate
Official certainty
Likely

What is happening

For the following areas... Harbor Beach to Port Sanilac MI... Lake Huron from Harbor Beach to Port Sanilac 5NM Off Shore to US/Canadian border... Lake Huron from Port Sanilac to Port Huron 5NM Off Shore to US/Canadian border... Port Sanilac to Port Huron MI... At 432 PM EDT, a severe thunderstorm was located 14 nm...

What the bulletin says to do

Move to safe harbor until hazardous weather passes. 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 official NWS bulletin

Full official description

Bulletin details

For the following areas... Harbor Beach to Port Sanilac MI... Lake Huron from Harbor Beach to Port Sanilac 5NM Off Shore to US/Canadian border... Lake Huron from Port Sanilac to Port Huron 5NM Off Shore to US/Canadian border... Port Sanilac to Port Huron MI... At 432 PM EDT, a severe thunderstorm was located 14 nm east of Port Sanilac, moving east at 50 knots. HAZARD...Wind gusts in excess of 50 knots and large hail. SOURCE...Radar indicated. IMPACT...Boats could suffer significant structural damage in high winds and hail. Small craft could capsize in suddenly higher waves. Locations impacted include... White Rock, Port Sanilac, Richmondville, and Lexington.

Lifecycle record

Official revisions

4 captured
  1. Update

    Special Marine Warning issued September 2 at 4:33PM EDT until September 2 at 5:30PM EDT by NWS Detroit/Pontiac MI

    Official revision
  2. Update

    Special Marine Warning issued September 2 at 4:05PM EDT until September 2 at 5:30PM EDT by NWS Detroit/Pontiac MI

    Official revision
  3. Update

    Special Marine Warning issued September 2 at 3:48PM EDT until September 2 at 5:30PM EDT by NWS Detroit/Pontiac MI

    Official revision
  4. Alert

    Special Marine Warning issued September 2 at 3:28PM EDT until September 2 at 5:30PM 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
Update
Last collected
Methodology and corrections