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Ended official alertUpdated

Special Marine Warning for Burns Harbor to Michigan City IN; Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake

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 Burns Harbor to Michigan City... Open Waters from Wilmette Harbor to Michigan City out to Mid Lake... At 112 AM CDT, severe thunderstorms were located along a line extending from 9 nm north of Marina Shores at Dune Harbor to near Burns Harbor, moving east at 20...

What the bulletin says to do

Move to safe harbor until hazardous weather passes. Frequent lightning is occurring with these storms. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects.

Read official NWS bulletin

Full official description

Bulletin details

For the following areas... Nearshore Waters from Burns Harbor to Michigan City... Open Waters from Wilmette Harbor to Michigan City out to Mid Lake... At 112 AM CDT, severe thunderstorms were located along a line extending from 9 nm north of Marina Shores at Dune Harbor to near Burns Harbor, moving east at 20 knots. HAZARD...Wind gusts to 40 knots and large hail. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. Severe thunderstorms will remain over mainly open waters.

Lifecycle record

Official revisions

3 captured
  1. Update

    Special Marine Warning issued August 11 at 1:13AM CDT until August 11 at 2:00AM CDT by NWS Chicago IL

    Official revision
  2. Update

    Special Marine Warning issued August 11 at 12:50AM CDT until August 11 at 2:00AM CDT by NWS Chicago IL

    Official revision
  3. Alert

    Special Marine Warning issued August 11 at 12:30AM CDT until August 11 at 2:00AM CDT by NWS Chicago IL

    Official revision

Source and limitations

Publisher: Weather Alert Watch. Primary source: NWS Chicago IL. 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