NWS coastal zone LHZ464

Lake Huron from Port Sanilac to Port Huron 5NM Off Shore to US/Canadian border 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 Huron from Port Sanilac to Port Huron 5NM Off Shore to US/Canadian border. Conditions can change.

How matching works

Official zone ID: LHZ464
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 Harbor Beach to Port Sanilac MI; Port Sanilac to Port Huron MI; Lake Huron from Harbor Beach to Port Sanilac 5NM Off Shore to US/Canadian border +1 more

Harbor Beach to Port Sanilac MI, Lake Huron from Harbor Beach to Port Sanilac 5NM Off Shore to US/Canadian border, Lake Huron from Port Sanilac to Port Huron 5NM Off Shore to US/Canadian border and 1 more

Ended Jul 21, 2026, 5:30 PM UTC

Ended Official severity: Minor

Marine Weather Statement for St. Clair River; Harbor Beach to Port Sanilac MI; Port Sanilac to Port Huron MI +2 more

Ended Jul 21, 2026, 11:30 PM UTC

Ended Official severity: Minor

Marine Weather Statement for St. Clair River; Detroit River; Lake St. Clair Open Lake (U.S. Portion) +2 more

Detroit River, Lake Huron from Port Sanilac to Port Huron 5NM Off Shore to US/Canadian border, Lake St. Clair Open Lake (U.S. Portion) and 2 more

Ended Jul 21, 2026, 8:15 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