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Ended official alertUpdated

Special Marine Warning for St Ignace to False Detour Channel; 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island; Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt to the US/Canadian border beyond 5 NM from shore

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... 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island... Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt to the US/Canadian border beyond 5 NM from shore... St Ignace to False Detour Channel... At 1119 PM EDT, strong thunderstorms were located...

What the bulletin says to do

Move to safe harbor until hazardous weather passes.

Read official NWS bulletin

Full official description

Bulletin details

For the following areas... 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island... Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt to the US/Canadian border beyond 5 NM from shore... St Ignace to False Detour Channel... At 1119 PM EDT, strong thunderstorms were located along a line extending from near False Detour Channel to 12 nm northeast of Observatory Point, moving east at 35 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... Rogers City, Observatory Point, False Detour Channel, Hammond Bay, Adams Point, Beaver Tail Point, Marquette Island, Nine Mile Point, Saint Marys River, Forty Mile Point, and De Tour Village.

Lifecycle record

Official revisions

3 captured
  1. Update

    Special Marine Warning issued July 20 at 11:19PM EDT until July 20 at 11:45PM EDT by NWS Gaylord MI

    Official revision
  2. Update

    Special Marine Warning issued July 20 at 10:17PM EDT until July 20 at 11:45PM EDT by NWS Gaylord MI

    Official revision
  3. Alert

    Special Marine Warning issued July 20 at 9:48PM EDT until July 20 at 11:45PM EDT by NWS Gaylord MI

    Official revision

Source and limitations

Publisher: Weather Alert Watch. Primary source: NWS Gaylord 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