Special Marine Warning Issued for Lake Superior
This alert is no longer in effect.
NOAA issued it on June 9, 2026, 2 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
NWS Marquette has issued a Special Marine Warning for Lake Superior waters including Isle Royale National Park until 12:15 AM EDT.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Lake Superior
- Issued
- June 9, 2026
- Issuing authority
- NWS Marquette MI
Marine notices apply to named waters or shoreline zones. They may not describe conditions on land, even when the nearest place name is the same.
Record status: historical. It was issued 2 months ago; use the issuing agency's live warning service for current conditions in Lake Superior.
Alert Details
Special Marine Warning issued by NWS Marquette MI. Effective from 2026-05-25T23:34:00-04:00 until 2026-05-26T00:15:00-04:00. Alert type code: MA.W.
Affected Areas
Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI, 5NM offshore to the US/Canadian border, including Isle Royale National Park.
What You Should Do
Boaters should seek safe harbor immediately until this storm passes.
Expected Conditions
At 11:33 PM EDT, a severe thunderstorm was located 12 nm southwest of The Western Lake Superior Buoy, moving southeast at 20 knots. Hazard includes wind gusts 34 knots or greater and large hail.
Timeline
Alert in effect from May 25 at 11:34 PM EDT until May 26 at 12:15 AM EDT.
Original source: NOAA Official Notice ↗
Related Weather Alerts
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Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (732 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to June 9, 2026.
Frequently Asked Questions
Common questions about this NWS weather alert.