Marine Weather Message
Issued by NWS Marquette, MI

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507
WHUS73 KMQT 280808
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
408 AM EDT Thu Aug 28 2025

LSZ250-251-281900-
/O.EXT.KMQT.SC.Y.0139.000000T0000Z-250828T1900Z/
Munising to Grand Marais MI-Grand Marais to Whitefish Point MI-
408 AM EDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 PM EDT THIS
AFTERNOON...

* WHAT...North to northeast winds 15 to 20 kt with gusts up to 25
  kt and waves 3 to 5 ft occurring.

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

* WHEN...Until 3 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.

&&

$$

LSZ240>242-281500-
/O.EXT.KMQT.SC.Y.0139.000000T0000Z-250828T1500Z/
Saxon Harbor WI to Black River MI-Black River to Ontonagon MI-
Ontonagon to Upper Entrance of Portage Canal MI-
408 AM EDT Thu Aug 28 2025 /308 AM CDT Thu Aug 28 2025/

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

* WHAT...Northeast winds 10 to 15 kt with gusts up to 20 kt and
  waves 2 to 4 ft occurring.

* WHERE...Saxon Harbor WI to Black River MI, 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.

&&

$$

LSZ243-244-281500-
/O.EXT.KMQT.SC.Y.0138.000000T0000Z-250828T1500Z/
Upper Entrance of Portage Canal to Eagle River MI-
Eagle River to Manitou Island MI-
408 AM EDT Thu Aug 28 2025

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

* WHAT...Northeast winds 10 to 20 kt with gusts up to 25 kt and
  waves 4 to 6 ft occurring.

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

* WHEN...Until 11 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.

&&

$$

LSZ245>247-281400-
/O.EXT.KMQT.SC.Y.0139.000000T0000Z-250828T1400Z/
Manitou Island to Point Isabelle MI-
Point Isabelle to Lower Entrance of Portage Canal MI-
Lower Entrance of Portage Canal To Huron Islands MI Including
Keweenaw and Huron Bays-
408 AM EDT Thu Aug 28 2025

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

* WHAT...Northeast winds 10 to 15 kt with gusts up to 25 kt and
  waves 1 to 4 ft occurring.

* WHERE...Manitou Island to Point Isabelle MI, Point Isabelle to
  Lower Entrance of Portage Canal MI and Lower Entrance of
  Portage Canal To Huron Islands MI Including Keweenaw and Huron
  Bays.

* 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.

&&

$$

LSZ248-249-282000-
/O.EXT.KMQT.SC.Y.0139.000000T0000Z-250828T2000Z/
Huron Islands to Marquette MI-Marquette to Munising MI-
408 AM EDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 PM EDT THIS
AFTERNOON...

* WHAT...North to northeast winds 10 to 15 kt with gusts up to 20
  kt and waves 3 to 6 ft occurring.

* WHERE...Huron Islands to Marquette MI and Marquette to
  Munising MI.

* WHEN...Until 4 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.

&&

$$

TAP