WHUS73 KMQT 191949

MWWMQT



URGENT - MARINE WEATHER MESSAGE

National Weather Service Marquette MI

349 PM EDT Tue Aug 19 2025



LSZ263-264-266-200600-

/O.EXT.KMQT.MF.Y.0019.000000T0000Z-250820T0600Z/

Lake Superior from Saxon Harbor WI to Upper Entrance to Portage

Canal MI 5NM off shore to the US/Canadian border including Isle

Royale National Park-

Lake Superior from Upper Entrance to Portage Canal to Manitou

Island MI 5NM off shore to the US/Canadian Border-

Lake Superior East of a line from Manitou Island to Marquette MI

and West of a line from Grand Marais MI to the US/Canadian Border

Beyond 5NM from shore-

349 PM EDT Tue Aug 19 2025



...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 2 AM EDT WEDNESDAY...



* WHAT...Dense fog will reduce visibility to less than one 

  nautical mile.



* WHERE...Lake Superior from Saxon Harbor WI to Upper Entrance 

  to Portage Canal MI 5NM off shore to the US/Canadian border 

  including Isle Royale National Park, Lake Superior from Upper 

  Entrance to Portage Canal to Manitou Island MI 5NM off shore 

  to the US/Canadian Border and Lake Superior East of a line 

  from Manitou Island to Marquette MI and West of a line from 

  Grand Marais MI to the US/Canadian Border Beyond 5NM from 

  shore.



* WHEN...Until 2 AM EDT Wednesday.



* 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.



&&



$$



LSZ241>244-265-200000-

/O.CON.KMQT.MF.Y.0019.000000T0000Z-250820T0000Z/

Black River to Ontonagon MI-

Ontonagon to Upper Entrance of Portage Canal MI-

Upper Entrance of Portage Canal to Eagle River MI-

Eagle River to Manitou Island MI-

Lake Superior West of Line from Manitou Island to Marquette MI

Beyond 5NM from shore-

349 PM EDT Tue Aug 19 2025 /249 PM CDT Tue Aug 19 2025/



...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT /7 PM CDT/

THIS EVENING...



* WHAT...Dense fog will reduce visibility to less than one 

  nautical mile.



* WHERE...Black River to Ontonagon MI, Ontonagon to Upper 

  Entrance of Portage Canal MI, Upper Entrance of Portage Canal 

  to Eagle River MI, Eagle River to Manitou Island MI and Lake 

  Superior West of Line from Manitou Island to Marquette MI 

  Beyond 5NM from shore.



* WHEN...Until 8 PM EDT /7 PM CDT/ this evening.



* 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.



&&



$$



Jablonski