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Special Marine Warning for Rock Island Passage to Sturgeon Bay WI; Sturgeon Bay to Two Rivers WI; Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM offshore to mid lake +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... Nearshore waters from Washington Island to Two Rivers... Open waters of Lake Michigan from Rock Island Passage to Two Rivers... At 1021 AM CDT, severe thunderstorms capable of producing waterspouts were located along a line from 12 NM southeast of Sturgeon Bay Ship Canal Light to 12 NM...

What the bulletin says to do

Move to safe harbor until hazardous weather passes. Move to safe harbor immediately as gusty winds and high waves are expected.

Read official NWS bulletin

Full official description

Bulletin details

For the following areas... Nearshore waters from Washington Island to Two Rivers... Open waters of Lake Michigan from Rock Island Passage to Two Rivers... At 1021 AM CDT, severe thunderstorms capable of producing waterspouts were located along a line from 12 NM southeast of Sturgeon Bay Ship Canal Light to 12 NM southeast of Kewaunee Pierhead Light, moving east at 45 knots. HAZARD...Waterspouts, large hail, and wind gusts in excess of 50 knots. SOURCE...Radar indicated. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Boats could suffer significant structural damage in high winds and hail. Small craft could capsize in suddenly higher waves. This strong thunderstorm will remain over mainly open waters.

Lifecycle record

Official revisions

2 captured
  1. Update

    Special Marine Warning issued July 27 at 10:21AM CDT until July 27 at 10:45AM CDT by NWS Green Bay WI

    Official revision
  2. Alert

    Special Marine Warning issued July 27 at 9:51AM CDT until July 27 at 10:45AM CDT by NWS Green Bay WI

    Official revision

Source and limitations

Publisher: Weather Alert Watch. Primary source: NWS Green Bay WI. This page reorganizes official fields and does not add a forecast or expand the affected area.

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Actual
Message type
Update
Last collected
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