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Special Marine Warning — Saxon Harbor WI to Black River MI; Black River To Ontonagon MI; Ontonagon to Upper Entrance of Portage Canal MI; Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border
severe
Severity as published by US National Weather Service.
- Source
- US National Weather Service — official source
- Time
- 7 August 2026, 20:58 UTC (Aug 7, 2026)
- Area
- Saxon Harbor WI to Black River MI; Black River To Ontonagon MI; Ontonagon to Upper Entrance of Portage Canal MI; Lake Superior from Saxon Harbor WI to Uppe,
United States
46.801, -89.761
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.