Marine Weather Message
Issued by NWS Marquette, MI

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567
WHUS73 KMQT 170822
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
422 AM EDT Tue Jun 17 2025

LMZ248-250-171400-
/O.EXB.KMQT.SC.Y.0113.250617T0822Z-250617T1400Z/
Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
422 AM EDT Tue Jun 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING...

* WHAT...South to southwest winds around 15 kt with gusts up to
  25 kt and waves 2 to 3 ft occurring.

* WHERE...Seul Choix Point to Point Detour MI and 5NM East of a
  line from Fairport MI to Rock Island Passage.

* WHEN...Until 10 AM EDT this morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ250-251-171400-
/O.EXB.KMQT.SC.Y.0113.250617T0822Z-250617T1400Z/
Munising to Grand Marais MI-Grand Marais to Whitefish Point MI-
422 AM EDT Tue Jun 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING...

* WHAT...South to southwest winds around 15 kt with gusts up to
  25 kt and waves 1 to 2 ft occurring.

* WHERE...Munising to Grand Marais MI and Grand Marais to
  Whitefish Point MI.

* WHEN...Until 10 AM EDT this morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ241-242-171500-
/O.EXT.KMQT.SC.Y.0113.250617T0822Z-250617T1500Z/
Black River to Ontonagon MI-
Ontonagon to Upper Entrance of Portage Canal MI-
422 AM EDT Tue Jun 17 2025 /322 AM CDT Tue Jun 17 2025/

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 11 AM EDT /10 AM CDT/
THIS MORNING...

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

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

* WHEN...Until 11 AM EDT /10 AM CDT/ this morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ243-244-171800-
/O.EXT.KMQT.SC.Y.0113.250617T1100Z-250617T1800Z/
Upper Entrance of Portage Canal to Eagle River MI-
Eagle River to Manitou Island MI-
422 AM EDT Tue Jun 17 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 2 PM EDT THIS
AFTERNOON...

* WHAT...Southwest to west winds 15 to 20 kt with gusts up to 30
  kt and waves 2 to 5 ft expected.

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

* WHEN...Until 2 PM EDT this afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ162-263-264-171200-
/O.CON.KMQT.MF.Y.0011.000000T0000Z-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-
422 AM EDT Tue Jun 17 2025 /322 AM CDT Tue Jun 17 2025/

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT /7 AM CDT/
THIS MORNING...

* 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/ this morning.

* 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.

&&

$$

LSZ245-171600-
/O.CON.KMQT.SC.Y.0113.000000T0000Z-250617T1600Z/
Manitou Island to Point Isabelle MI-
422 AM EDT Tue Jun 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON EDT TODAY...

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

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

* WHEN...Until noon EDT today.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

TAP