Weather Alert WatchOfficial-source alert index
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Ended official alertUpdated

Special Marine Warning for Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border; Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM 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... Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore... Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border... At 541 PM EDT, a...

What the bulletin says to do

No separate action instruction was included in this NWS record. Read the complete official bulletin and follow local authorities.

Read official NWS bulletin

Full official description

Bulletin details

For the following areas... Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore... Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border... At 541 PM EDT, a strong thunderstorm was located near The Central Lake Superior Buoy, moving east at 25 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... The Central Lake Superior Buoy.

Lifecycle record

Official revisions

2 captured
  1. Update

    Special Marine Warning issued August 7 at 5:41PM EDT until August 7 at 6:00PM EDT by NWS Marquette MI

    Official revision
  2. Alert

    Special Marine Warning issued August 7 at 5:07PM EDT until August 7 at 6:00PM EDT by NWS Marquette MI

    Official revision

Source and limitations

Publisher: Weather Alert Watch. Primary source: NWS Marquette 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