Special Marine Warning
Issued by NWS Duluth, MN

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/O.NEW.KDLH.MA.W.0024.250722T2111Z-250722T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Duluth MN
411 PM CDT Tue Jul 22 2025

The National Weather Service in Duluth MN has issued a

* Special Marine Warning for...
  Duluth MN to Port Wing WI...
  Lake Superior west of a line from Saxon Harbor WI to Grand Portage
  MN beyond 5NM...
  Port Wing to Sand Island WI...
  Silver Bay Harbor to Two Harbors MN...
  Two Harbors to Duluth MN...

* Until 515 PM CDT.

* At 411 PM CDT, a strong thunderstorm was located 7 nm west of
  Duluth Harbor, or 8 nm west of Duluth Lift Bridge Channel, moving
  east at 35 knots.

  HAZARD...Wind gusts to 40 knots and small hail.

  SOURCE...Radar.

  IMPACT...Small craft could be damaged in briefly higher winds and
           suddenly higher waves.

* Locations impacted include...
  Knife River Marina, Superior Entry, Castle Danger, Barkers Island,
  Duluth Lift Bridge Channel, Duluth Harbor, Twin Points Safe Harbor,
  Two Harbors Protected Access Agate Bay, Brule Point, McQuade
  Harbor, Larsmont, Superior Harbor, Split Rock Lighthouse, Port Wing
  Harbor, Stoney Point, French River, and Herbster.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Boaters should seek safe harbor immediately until this storm passes.
Wind gusts to 40 knots, small hail, high waves, dangerous lightning,
and heavy rain are possible with this storm.

&&

LAT...LON 4669 9229 4668 9224 4672 9224 4680 9212
      4715 9149 4726 9135 4682 9125 4674 9150
      4666 9193 4666 9203 4671 9210 4666 9211
      4662 9221 4663 9228
TIME...MOT...LOC 2111Z 263DEG 37KT 4680 9228

HAIL...<.75IN
WIND...40KTS

$$

Moore