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Special Marine Warning — Portage Lake to Huron Island MI to Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays; Huron Islands to Marquette MI; Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5N
severe
Severity as published by US National Weather Service.
- Source
- US National Weather Service — official source
- Time
- 7 August 2026, 22:30 UTC (Aug 7, 2026)
- Area
- Portage Lake to Huron Island MI to Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays; Huron Islands to Marquette MI; La,
United States
47.015, -87.630
What this is
This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.
What to do
Follow the instructions issued by US National Weather Service and your local emergency services. The guidance below is background.
Who to contact
National Weather Service · FEMA · USGS Earthquake Hazards
This site is not an emergency service and does not issue warnings.
Location
No map is loaded here. A map means downloading image tiles from another service, which is the slowest thing on the full page and the first thing to fail on a weak connection. The coordinates are above if you need them.