Severe Severe Storm ● Closed

Special Marine Warning — Upper Entrance of Portage Canal to Eagle River MI; Eagle River to Manitou Island MI; Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border

Event time: Jul 30, 2026 20:08 UTC Last updated: Sep 6, 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 July 30 at 4:08PM EDT until July 30 at 4:15PM EDT by NWS Marquette MI

Measurements

Coordinates	47.4273, -88.1082
Region	Upper Entrance of Portage Canal to Eagle River MI; Eagle River to Manitou Island MI; Lake Superior from Upper Entrance to Portage Canal to Manitou Island M
Expires	2026-07-30T16:18:00-04:00
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 90 days ago (Jul 30, 2026 20:14 UTC) · we last heard from US National Weather Service 1 second ago

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Nearby & related events

Special Weather Statement issued October 28 at 8:37PM EDT by NWS Marquette MI, United States of America Moderate Extreme Weather United States active via WMO 30 min ago Special Marine Warning — Oak Point to Saxon Harbor WI; Outer Apostle Islands Beyond 5 NM from Mainland; Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM Severe Severe Storm United States active via NWS 34 min ago Severe Thunderstorm Warning — Ashland, WI Severe Severe Storm United States active via NWS 36 min ago Severe Thunderstorm Warning — Ashland, WI; Bayfield, WI Severe Severe Storm United States active via NWS 49 min ago Special Marine Warning — Saxon Harbor WI to Black River MI; Black River To Ontonagon MI; Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park Severe Severe Storm United States active via NWS 54 min ago

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.