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Active official alertUpdated

Special Marine Warning for North Point Light to Wind Point WI; Wind Point WI to Winthrop Harbor IL; Lake Michigan from Port Washington to North Point Light WI 5NM offshore to Mid Lake +2 more

Official alert fields

What you need to know

Effective
Ends or expires
Official severity
Severe
Official urgency
Immediate
Official certainty
Likely

What is happening

For the following areas... Nearshore waters from North Point Light WI to Winthrop Harbor IL... Lake Michigan from Port Washington WI to Winthrop Harbor IL... At 736 PM CDT, severe thunderstorms capable of producing waterspouts were located along a line extending from 24 nm east of Port Washington to 22 nm east of...

What the bulletin says to do

Move to safe harbor until hazardous weather passes.

Full official description

Bulletin details

For the following areas... Nearshore waters from North Point Light WI to Winthrop Harbor IL... Lake Michigan from Port Washington WI to Winthrop Harbor IL... At 736 PM CDT, severe thunderstorms capable of producing waterspouts were located along a line extending from 24 nm east of Port Washington to 22 nm east of Cudahy to 13 nm northeast of Racine to Wind Pt., moving east at 35 knots. HAZARD...Waterspouts and wind gusts to nearly 50 knots. SOURCE...Radar indicated. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves. Severe thunderstorms will remain over mainly open waters.

Official geometry where available

Alert boundary

Lifecycle record

Official revisions

3 captured
  1. Update

    Special Marine Warning issued August 18 at 7:37PM CDT until August 18 at 8:30PM CDT by NWS Milwaukee/Sullivan WI

    Official revision
  2. Update

    Special Marine Warning issued August 18 at 6:55PM CDT until August 18 at 8:30PM CDT by NWS Milwaukee/Sullivan WI

    Official revision
  3. Alert

    Special Marine Warning issued August 18 at 6:28PM CDT until August 18 at 8:30PM CDT by NWS Milwaukee/Sullivan WI

    Official revision

Source and limitations

Publisher: Weather Alert Watch. Primary source: NWS Milwaukee/Sullivan WI. 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