Special Marine Warning Issued for Lake Superior Zones
This alert is no longer in effect.
NOAA issued it on July 2, 2026, 7 weeks 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 Duluth MN has issued a Special Marine Warning for multiple Lake Superior zones until 6:30 AM CDT due to strong thunderstorms with wind gusts 34 knots or greater and small hail.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Lake Superior near Duluth MN and Apostle Islands
- Issued
- July 2, 2026
- Issuing authority
- NWS Duluth MN
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 7 weeks ago; use the issuing agency's live warning service for current conditions in Lake Superior near Duluth MN and Apostle Islands.
Alert Details
A Special Marine Warning has been issued by the National Weather Service in Duluth MN. The alert is effective from June 10 at 4:33 AM CDT until June 10 at 6:30 AM CDT.
Affected Areas
The warning covers Taconite Harbor to Silver Bay Harbor MN; Silver Bay Harbor to Two Harbors MN; Two Harbors to Duluth MN; Duluth MN to Port Wing WI; Port Wing to Sand Island WI; Sand Island to Bayfield WI; Outer Apostle Islands Beyond 5 NM from Mainland; and Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5 NM.
What You Should Do
Move to safe harbor until hazardous weather passes. Small craft could be damaged in briefly higher winds and suddenly higher waves.
Expected Conditions
At 4:32 AM CDT, strong thunderstorms were located along a line extending from 7 nm southeast of Saint Croix Band Sand Lake Area, moving northeast at 45 knots. Hazards include wind gusts 34 knots or greater and small hail.
Timeline
The alert is in effect from June 10 at 4:33 AM CDT and expires June 10 at 6:30 AM CDT.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
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 (1,047 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to July 2, 2026.
Frequently Asked Questions
Common questions about this NWS weather alert.