Marine Weather Message
Issued by NWS Marquette, MI

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345
WHUS73 KMQT 222036
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
436 PM EDT Fri Aug 22 2025

LSZ241-230845-
/O.EXB.KMQT.SC.Y.0134.250823T1000Z-250824T1200Z/
Black River to Ontonagon MI-
436 PM EDT Fri Aug 22 2025 /336 PM CDT Fri Aug 22 2025/

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT /5 AM CDT/
SATURDAY TO 8 AM EDT /7 AM CDT/ SUNDAY...

* WHAT...West to northwest winds 15 to 20 kt with gusts up to 25
  kt and waves 3 to 6 ft expected.

* WHERE...Black River to Ontonagon MI.

* WHEN...From 6 AM EDT /5 AM CDT/ Saturday to 8 AM EDT /7 AM
  CDT/ Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ244-230845-
/O.EXB.KMQT.SC.Y.0134.250823T1200Z-250824T1200Z/
Eagle River to Manitou Island MI-
436 PM EDT Fri Aug 22 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM SATURDAY TO 8 AM EDT
SUNDAY...

* WHAT...West to northwest winds 15 to 20 kt with gusts up to 30
  kt and waves 3 to 5 ft expected.

* WHERE...Eagle River to Manitou Island MI.

* WHEN...From 8 AM Saturday to 8 AM EDT Sunday.

* 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>248-230845-
/O.EXB.KMQT.SC.Y.0134.250823T1300Z-250824T0500Z/
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-Huron Islands to Marquette MI-
436 PM EDT Fri Aug 22 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM SATURDAY TO 1 AM EDT
SUNDAY...

* WHAT...West to northwest winds 10 to 20 kt with gusts up to 30
  kt and waves 1 to 3 ft expected.

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

* WHEN...From 9 AM Saturday to 1 AM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ249-230845-
/O.EXB.KMQT.SC.Y.0134.250823T1500Z-250824T0300Z/
Marquette to Munising MI-
436 PM EDT Fri Aug 22 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM TO 11 PM EDT
SATURDAY...

* WHAT...West to northwest winds 10 to 15 kt with gusts up to 25
  kt and waves 2 to 5 ft expected.

* WHERE...Marquette to Munising MI.

* WHEN...From 11 AM to 11 PM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ250-251-230845-
/O.EXB.KMQT.SC.Y.0134.250823T1500Z-250824T1200Z/
Munising to Grand Marais MI-Grand Marais to Whitefish Point MI-
436 PM EDT Fri Aug 22 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM SATURDAY TO 8 AM EDT
SUNDAY...

* WHAT...West to northwest winds 15 to 20 kt with gusts up to 25
  kt and waves 2 to 5 ft expected.

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

* WHEN...From 11 AM Saturday to 8 AM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ242-243-230845-
/O.CON.KMQT.SC.Y.0134.250823T0900Z-250825T1800Z/
Ontonagon to Upper Entrance of Portage Canal MI-
Upper Entrance of Portage Canal to Eagle River MI-
436 PM EDT Fri Aug 22 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 5 AM SATURDAY TO
2 PM EDT MONDAY...

* WHAT...West to northwest winds 15 to 20 kt with gusts up to 30
  kt and waves 3 to 6 ft expected.

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

* WHEN...From 5 AM Saturday to 2 PM EDT Monday.

* 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