Severe Severe Storm ● Closed

Special Marine Warning — Port Austin to Harbor Beach MI; Harbor Beach to Port Sanilac MI; Port Sanilac to Port Huron MI; Lake Huron from Port Austin to Harbor Beach 5NM Off Shore to the US/Canadian border; Lake Huron from Harbor Beach to Port Sanilac

Event time: Sep 2, 2026 19:48 UTC Last updated: Sep 13, 2026 United States

Icon = what happened · ring colour = how serious: Extreme Severe Moderate Minor

Loading live data… · Marker positions are approximate; severity is labelled in each popup. Sources: USGS, GDACS, NASA EONET, NOAA/NWS, EMSC.

Special Marine Warning issued September 2 at 3:48PM EDT until September 2 at 5:30PM EDT by NWS Detroit/Pontiac MI

Measurements

Coordinates	43.5786, -82.4171
Region	Port Austin to Harbor Beach MI; Harbor Beach to Port Sanilac MI; Port Sanilac to Port Huron MI; Lake Huron from Port Austin to Harbor Beach 5NM Off Shore t
Nws Urgency	Immediate
Nws Certainty	Likely
Expires	2026-09-02T17:30:00-04:00

Official source

Weather alert data courtesy of NOAA / National Weather Service

This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.

Severity as published by US National Weather Service.

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Source updated 60 days ago (Sep 2, 2026 20:06 UTC) · we last heard from US National Weather Service 15 seconds ago

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Official authorities in United States

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Earlier severe storm events in United States

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Disclaimer: figures are automatic feeds from the named agencies and may be revised. Do not use this page for life-safety decisions — follow official local emergency services.