431
WHUS73 KMQT 170020
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
820 PM EDT Mon Jun 16 2025

LSZ162-263-264-171200-
/O.NEW.KMQT.MF.Y.0011.250617T0020Z-250617T1200Z/
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
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-
820 PM EDT Mon Jun 16 2025 /720 PM CDT Mon Jun 16 2025/

...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT /7 AM CDT/
TUESDAY...

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

* WHERE...Lake Superior west of a line from Saxon Harbor WI to
  Grand Portage MN beyond 5NM, 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 and
  Lake Superior from Upper Entrance to Portage Canal to Manitou
  Island MI 5NM off shore to the US/Canadian Border.

* WHEN...Until 8 AM EDT /7 AM CDT/ Tuesday.

* 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.

&&

$$

LSZ241-242-171230-
/O.CON.KMQT.SC.Y.0113.250617T0900Z-250617T1500Z/
Black River to Ontonagon MI-
Ontonagon to Upper Entrance of Portage Canal MI-
820 PM EDT Mon Jun 16 2025 /720 PM CDT Mon Jun 16 2025/

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 5 AM EDT /4 AM
CDT/ TO 11 AM EDT /10 AM CDT/ TUESDAY...

* WHAT...Southwest winds 15 to 20 kt with gusts up to 25 kt and
  waves 1 to 4 ft expected.

* WHERE...Black River to Ontonagon MI and Ontonagon to Upper
  Entrance of Portage Canal MI.

* WHEN...From 5 AM EDT /4 AM CDT/ to 11 AM EDT /10 AM CDT/
  Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LSZ243-244-171230-
/O.CON.KMQT.SC.Y.0113.250617T1200Z-250617T2200Z/
Upper Entrance of Portage Canal to Eagle River MI-
Eagle River to Manitou Island MI-
820 PM EDT Mon Jun 16 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 AM TO 6 PM EDT
TUESDAY...

* WHAT...West winds 15 to 20 kt with gusts up to 25 kt and waves
  3 to 5 ft expected.

* WHERE...Upper Entrance of Portage Canal to Eagle River MI and
  Eagle River to Manitou Island MI.

* WHEN...From 8 AM to 6 PM EDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LSZ245-171230-
/O.CON.KMQT.SC.Y.0113.250617T0400Z-250617T1600Z/
Manitou Island to Point Isabelle MI-
820 PM EDT Mon Jun 16 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO NOON EDT TUESDAY...

* WHAT...South winds 10 to 20 kt with gusts up to 25 kt and
  waves 2 to 4 ft expected.

* WHERE...Manitou Island to Point Isabelle MI.

* WHEN...From midnight tonight to noon EDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$