Severe Severe Storm ● Closed
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
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 August 7 at 4:58PM EDT until August 7 at 6:00PM EDT by NWS Marquette MI
Measurements
| Coordinates | 46.8008, -89.7608 |
|---|---|
| Region | 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 |
| Expires | 2026-08-07T18:00:00-04:00 |
| Nws Urgency | Immediate |
| Nws Certainty | Likely |
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 73 days ago (Aug 7, 2026 21:18 UTC) · we last heard from US National Weather Service 41 seconds ago
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