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NWS Duluth MNMA.W 0018June 29, 2026

Special Marine Warning: Chequamegon Bay-Bayfield to Oak Point WI, Silver Bay Harbor to Two Harbors MN, Two Harbors to Duluth MN and 6 more

The National Weather Service office in Duluth issued a special marine warning for Chequamegon Bay-Bayfield to Oak Point WI, Silver Bay Harbor to Two Harbors MN, Two Harbors to Duluth MN and 6 more, which was in force until 3:30 p.m. local time on June 29. It was the 18th special marine warning the NWS office in Duluth issued in 2026.

ExpiredWarning

Issued2:37 p.m. CDT, June 29, 2026
In force2:37 p.m. CDT, June 29, 2026
Expired3:30 p.m. CDT, June 29, 2026

In force for 53 minutes; it has expired. The agency may have replaced it with a new notice.

The notice

Issued by
National Weather Service, Duluth MN
Area
Chequamegon Bay-Bayfield to Oak Point WI, Silver Bay Harbor to Two Harbors MN, Two Harbors to Duluth MN and 6 more
Level
Warning
Issued
2:37 p.m. CDT, June 29, 2026
Expires
3:30 p.m. CDT, June 29, 2026
CAP severity, certainty, urgency
Severe, Likely, Immediate
VTEC event
KDLH MA.W 0018
Official source
National Weather Service: the notice at its source

NWS notices, June 2026The latest from the National Weather Service

Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.

The notice as issued

SMWDLH The National Weather Service in Duluth MN has issued a * Special Marine Warning for... Chequamegon Bay-Bayfield to Oak Point WI... Duluth MN to Port Wing WI... Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM... Oak Point to Saxon Harbor WI... Outer Apostle Islands Beyond 5 NM from Mainland... Port Wing to Sand Island WI... Sand Island to Bayfield WI... Silver Bay Harbor to Two Harbors MN... Two Harbors to Duluth MN... * Until 330 PM CDT. * At 236 PM CDT, a strong thunderstorm was located near Knife River Marina, or 16 nm east of Duluth Lift Bridge Channel, moving east at 50 knots. HAZARD...Wind gusts 34 knots or greater and small hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... Ashland Breakwater Lighthouse, Ironwood Island, Superior Entry, Basswood Island, Sand Island, Barkers Island, Stockton Island, Madeline Island, Devils Island, Manitou Island, Cat Island, North Twin Island, McQuade Harbor, Herbster, Meyers Beach, York Island, Superior Harbor, Larsmont, Eagle Island, and La Pointe.

What the agency told people to do

Move to safe harbor until hazardous weather passes.

Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.

The record around this notice