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Active official alertUpdated

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

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 Wind Point WI TO Winthrop Harbor IL... Lake Michigan from North Point Light WI to Winthrop Harbor IL 5 nm off shore to mid lake... At 830 PM CDT, strong thunderstorms were located along a line extending from 33 nm east of Wind Pt. to near Winthrop Harbor, moving...

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 Wind Point WI TO Winthrop Harbor IL... Lake Michigan from North Point Light WI to Winthrop Harbor IL 5 nm off shore to mid lake... At 830 PM CDT, strong thunderstorms were located along a line extending from 33 nm east of Wind Pt. to near Winthrop Harbor, moving southeast at 25 knots. HAZARD...Wind gusts to nearly 50 knots. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Strong thunderstorms will remain over mainly open waters.

Official geometry where available

Alert boundary

Lifecycle record

Official revisions

2 captured
  1. Update

    Special Marine Warning issued August 18 at 8:31PM CDT until August 18 at 9:15PM CDT by NWS Milwaukee/Sullivan WI

    Official revision
  2. Alert

    Special Marine Warning issued August 18 at 7:10PM CDT until August 18 at 9:15PM 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