NWS coastal zone LMZ779

Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake weather alerts

Marine alerts linked to this verified National Weather Service zone.

NWS feedSource freshLast successful check: Aug 2, 2026, 2:18 AM UTC

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No active alerts found

The latest successful NWS collection contained no active public alerts matched to Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake. Conditions can change.

How matching works

Official zone ID: LMZ779
Zone type: coastal
State: Marine or multi-state area
Metadata verified: Yes, from NWS

Context only

Recently ended alerts

Ended Official severity: Severe

Special Marine Warning for Wilmette Harbor to Northerly Island IL; Northerly Island to Calumet Harbor IL; Calumet Harbor IL to Gary IN +3 more

Burns Harbor to Michigan City IN, Calumet Harbor IL to Gary IN, Gary to Burns Harbor IN and 3 more

Ended Jul 27, 2026, 10:37 PM UTC

Ended Official severity: Severe

Special Marine Warning for Wilmette Harbor to Northerly Island IL; Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM offshore to Mid Lake; Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake

Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake, Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM offshore to Mid Lake, Wilmette Harbor to Northerly Island IL

Ended Jul 27, 2026, 7:27 PM UTC

Ended Official severity: Severe

Special Marine Warning for Northerly Island to Calumet Harbor IL; Calumet Harbor IL to Gary IN; Gary to Burns Harbor IN +2 more

Burns Harbor to Michigan City IN, Calumet Harbor IL to Gary IN, Gary to Burns Harbor IN and 2 more

Ended Jul 27, 2026, 7:27 PM UTC

Ended Official severity: Severe

Special Marine Warning for Northerly Island to Calumet Harbor IL; Calumet Harbor IL to Gary IN; Gary to Burns Harbor IN +2 more

Burns Harbor to Michigan City IN, Calumet Harbor IL to Gary IN, Gary to Burns Harbor IN and 2 more

Ended Jul 27, 2026, 6:15 PM UTC

Ended Official severity: Severe

Special Marine Warning for Winthrop Harbor to Wilmette Harbor IL; Wilmette Harbor to Northerly Island IL; Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM offshore to Mid Lake +1 more

Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake, Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM offshore to Mid Lake, Wilmette Harbor to Northerly Island IL and 1 more

Ended Jul 27, 2026, 6:45 PM UTC

Zone matching is not a personal forecast

This page uses official NWS zone membership. For exact location matching, an alert must include official geometry or be linked to a verified zone geometry that contains the point.

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