Watches, Warnings & Advisories

3 products found for Marine Zone: LSZ141

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Duluth MN
1053 AM CDT Thu Jul 30 2026

LSZ121-140>148-150-311600-
Bayfield to Oak Point WI-Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
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-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
1053 AM CDT Thu Jul 30 2026

This Hazardous Weather Outlook is for portions of Lake Superior
and the Nearshore waters of western Lake Superior.

.DAY ONE...Today and Tonight

Dense fog is expected for parts of the North Shore today. A Dense
Fog Advisory is in effect. Areas of fog could linger into the
evening and tonight.

There is a chance of scattered thunderstorms this morning and
again this evening, especially on the North Shore. A few storms
could be severe and produce hail around an inch in diameter and
winds up to around 50 kt. Dense fog may develop over the waters
due to rain from storms falling over Lake Superior. Areas of smoke
are possible today.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

There is a slight chance of thunderstorms Friday morning with the
highest chance over the south shore waters.

Dense fog is possible Friday morning.

There will be off and on periods of smoke.

Thunderstorm chances return Monday night through Wednesday
morning.

$$

JDS

More information may be obtained at the following web address:
http://www.weather.gov/duluth

Special Marine Warning

Special Marine Warning
LSZ140-141-162-301715-
/O.NEW.KDLH.MA.W.0042.260730T1616Z-260730T1715Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Duluth MN
1116 AM CDT Thu Jul 30 2026

The National Weather Service in Duluth MN has issued a

* Special Marine Warning for...
  Grand Marais to Taconite Harbor MN...
  Grand Portage to Grand Marais MN...
  Lake Superior west of a line from Saxon Harbor WI to Grand Portage
  MN beyond 5NM...

* Until 1215 PM CDT.

* At 1115 AM CDT, strong thunderstorms were located along a line
  extending from 15 nm northwest of Grand Marais Harbor to near Grand
  Portage Marina to near Pigeon Point, moving southeast at 35 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...
  Horseshoe Bay And Safe Harbor, Grand Portage Marina, and Grand
  Marais Harbor.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to safe harbor until hazardous weather passes.

Boaters should seek safe harbor immediately until these storms pass.
Wind gusts 34 knots or greater, small hail, high waves, dangerous
lightning, and heavy rain are possible with these storms.


&&

LAT...LON 4800 8947 4799 8941 4793 8946 4789 8954
      4787 8964 4726 9006 4774 9048 4791 8982
      4801 8966
TIME...MOT...LOC 1615Z 319DEG 36KT 4797 9055 4787 8974 4798 8956

HAIL...<.75IN
WIND...>34KTS

$$

HA

Dense Fog Advisory

URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
1049 AM CDT Thu Jul 30 2026

LSZ140>142-302100-
/O.NEW.KDLH.MF.Y.0031.260730T1600Z-260730T2100Z/
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
1049 AM CDT Thu Jul 30 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON...

* WHAT...Dense fog will reduce visibility to 1/2 to 1 NM.

* WHERE...Grand Portage to Grand Marais MN, Grand Marais to
  Taconite Harbor MN and Taconite Harbor to Silver Bay Harbor MN.

* WHEN...Until 4 PM CDT this afternoon.

* IMPACTS...Low visibility will make navigation difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must navigate, proceed with caution. Use proper fog
signals. Make sure all running lights are on. Remember to use
your radar and compass.

&&

$$