Marine Weather Message
Issued by NWS Marquette, MI

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705
WHUS73 KMQT 181918
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
318 PM EDT Mon Aug 18 2025

LSZ242-190000-
/O.CON.KMQT.SC.Y.0133.000000T0000Z-250819T0000Z/
Ontonagon to Upper Entrance of Portage Canal MI-
318 PM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

* WHAT...Southeast winds 5 to 10 kt with gusts up to 25 kt and
  waves 1 foot or less occurring.

* WHERE...Ontonagon to Upper Entrance of Portage Canal MI.

* WHEN...Until 8 PM EDT this evening.

* 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>246-190300-
/O.CON.KMQT.SC.Y.0133.000000T0000Z-250819T0300Z/
Upper Entrance of Portage Canal to Eagle River MI-
Eagle River to Manitou Island MI-
Manitou Island to Point Isabelle MI-
Point Isabelle to Lower Entrance of Portage Canal MI-
318 PM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM EDT THIS
EVENING...

* WHAT...Southeast winds 10 to 15 kt with gusts up to 30 kt and
  waves 1 to 3 ft occurring.

* WHERE...Upper Entrance of Portage Canal to Eagle River MI,
  Eagle River to Manitou Island MI, Manitou Island to Point
  Isabelle MI and Point Isabelle to Lower Entrance of Portage
  Canal MI.

* WHEN...Until 11 PM EDT this evening.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ247-248-190000-
/O.CON.KMQT.SC.Y.0133.000000T0000Z-250819T0000Z/
Lower Entrance of Portage Canal To Huron Islands MI Including
Keweenaw and Huron Bays-Huron Islands to Marquette MI-
318 PM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

* WHAT...Southeast winds 10 to 15 kt with gusts up to 25 kt and
  waves 1 to 2 ft occurring.

* WHERE...Lower Entrance of Portage Canal To Huron Islands MI
  Including Keweenaw and Huron Bays and Huron Islands to
  Marquette MI.

* WHEN...Until 8 PM EDT this evening.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Jablonski