NWS coastal zone LMZ870

Lake Michigan from Whitehall to Pentwater MI 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

Current answer

Active alert check

No active alerts found

The latest successful NWS collection contained no active public alerts matched to Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid Lake. Conditions can change.

How matching works

Official zone ID: LMZ870
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 Whitehall to Pentwater MI; Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid Lake

Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid Lake, Whitehall to Pentwater MI

Ended Jul 27, 2026, 7:00 PM UTC

Ended Official severity: Severe

Special Marine Warning for Grand Haven to Whitehall MI; Whitehall to Pentwater MI; Pentwater to Manistee MI +2 more

Grand Haven to Whitehall MI, Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid Lake, Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid Lake and 2 more

Ended Jul 27, 2026, 6:00 PM UTC

Ended Official severity: Severe

Special Marine Warning for Grand Haven to Whitehall MI; Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid Lake; Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to Mid Lake

Grand Haven to Whitehall MI, Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to Mid Lake, Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid Lake

Ended Jul 27, 2026, 3:45 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.

How location matching works