Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
1031 AM EST Thu Dec 4 2025
LSZ243-244-050345-
/O.CON.KMQT.SC.Y.0191.000000T0000Z-251205T0000Z/
/O.CON.KMQT.GL.W.0058.251205T0000Z-251205T1200Z/
Upper Entrance of Portage Canal to Eagle River MI-
Eagle River to Manitou Island MI-
1031 AM EST Thu Dec 4 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...
...GALE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 7 AM
EST FRIDAY...
* WHAT...For the Small Craft Advisory, southwest winds 15 to 20
kt with gusts up to 30 kt and waves 3 to 6 ft occurring. For
the Gale Warning, southwest winds 20 to 30 kt with gusts up to
40 kt and waves 6 to 11 ft expected.
* WHERE...Upper Entrance of Portage Canal to Eagle River MI and
Eagle River to Manitou Island MI.
* WHEN...For the Small Craft Advisory, until 7 PM EST this
evening. For the Gale Warning, from 7 PM this evening to 7 AM
EST Friday.
* IMPACTS...Strong winds will cause hazardous waves which could
capsize or damage vessels and reduce visibility.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
1031 AM EST Thu Dec 4 2025
LSZ249>251-050345-
/O.CON.KMQT.SC.Y.0192.000000T0000Z-251205T0000Z/
/O.CON.KMQT.GL.W.0058.251205T0000Z-251205T1200Z/
Marquette to Munising MI-Munising to Grand Marais MI-
Grand Marais to Whitefish Point MI-
1031 AM EST Thu Dec 4 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...
...GALE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 7 AM
EST FRIDAY...
* WHAT...For the Small Craft Advisory, west winds 15 to 25 kt
with gusts up to 30 kt and waves 7 to 12 ft occurring. For the
Gale Warning, southwest winds 20 to 30 kt with gusts up to 40
kt and waves 2 to 5 ft expected.
* WHERE...Marquette to Munising MI, Munising to Grand Marais MI
and Grand Marais to Whitefish Point MI.
* WHEN...For the Small Craft Advisory, until 7 PM EST this
evening. For the Gale Warning, from 7 PM this evening to 7 AM
EST Friday.
* IMPACTS...Strong winds will cause hazardous waves which could
capsize or damage vessels and reduce visibility.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
1031 AM EST Thu Dec 4 2025
LSZ241-050345-
/O.CON.KMQT.SC.Y.0191.000000T0000Z-251204T2100Z/
/O.CON.KMQT.GL.W.0058.251204T2100Z-251205T0900Z/
Black River to Ontonagon MI-
1031 AM EST Thu Dec 4 2025 /931 AM CST Thu Dec 4 2025/
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EST /3 PM
CST/ THIS AFTERNOON...
...GALE WARNING REMAINS IN EFFECT FROM 4 PM EST /3 PM CST/ THIS
AFTERNOON TO 4 AM EST /3 AM CST/ FRIDAY...
* WHAT...For the Small Craft Advisory, southwest winds 15 to 20
kt with gusts up to 25 kt and waves 2 to 4 ft occurring. For
the Gale Warning, southwest winds 15 to 25 kt with gusts up to
35 kt and waves 4 to 7 ft expected.
* WHERE...Black River to Ontonagon MI.
* WHEN...For the Small Craft Advisory, until 4 PM EST /3 PM CST/
this afternoon. For the Gale Warning, from 4 PM EST /3 PM CST/
this afternoon to 4 AM EST /3 AM CST/ Friday.
* IMPACTS...Strong winds will cause hazardous waves which could
capsize or damage vessels and reduce visibility.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
1031 AM EST Thu Dec 4 2025
LSZ242-050345-
/O.CON.KMQT.SC.Y.0191.000000T0000Z-251204T2100Z/
/O.CON.KMQT.GL.W.0058.251204T2100Z-251205T0900Z/
Ontonagon to Upper Entrance of Portage Canal MI-
1031 AM EST Thu Dec 4 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON...
...GALE WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO
4 AM EST FRIDAY...
* WHAT...For the Small Craft Advisory, southwest winds 10 to 20
kt with gusts up to 30 kt and waves 3 to 5 ft occurring. For
the Gale Warning, southwest winds 20 to 30 kt with gusts up to
35 kt and waves 7 to 10 ft expected.
* WHERE...Ontonagon to Upper Entrance of Portage Canal MI.
* WHEN...For the Small Craft Advisory, until 4 PM EST this
afternoon. For the Gale Warning, from 4 PM this afternoon to 4
AM EST Friday.
* IMPACTS...Strong winds will cause hazardous waves which could
capsize or damage vessels and reduce visibility.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
1031 AM EST Thu Dec 4 2025
LSZ245>248-050345-
/O.CON.KMQT.SC.Y.0192.000000T0000Z-251205T0000Z/
/O.CON.KMQT.GL.W.0058.251205T0000Z-251205T1200Z/
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-
1031 AM EST Thu Dec 4 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...
...GALE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 7 AM
EST FRIDAY...
* WHAT...For the Small Craft Advisory, southwest winds 10 to 20
kt with gusts up to 25 kt and waves 2 to 5 ft occurring. For
the Gale Warning, southwest winds 15 to 25 kt with gusts up to
35 kt and waves 2 to 5 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...For the Small Craft Advisory, until 7 PM EST this
evening. For the Gale Warning, from 7 PM this evening to 7 AM
EST Friday.
* IMPACTS...Strong winds will cause hazardous waves which could
capsize or damage vessels and reduce visibility.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
315 AM CST Thu Dec 4 2025
LSZ150-042115-
/O.CON.KDLH.SC.Y.0132.000000T0000Z-251204T1800Z/
/O.UPG.KDLH.GL.A.0018.251204T1800Z-251205T0600Z/
/O.NEW.KDLH.GL.W.0034.251204T1800Z-251205T0600Z/
Outer Apostle Islands Beyond 5 NM from Mainland-
315 AM CST Thu Dec 4 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST TODAY...
...GALE WARNING IN EFFECT FROM NOON TODAY TO MIDNIGHT CST
TONIGHT...
* WHAT...For the Small Craft Advisory, west winds 10 to 20 kt
with gusts up to 25 kt and waves 1 to 4 ft. For the Gale
Warning, southwest winds 20 to 30 kt with gusts up to 40 kt
and waves 3 to 6 ft expected.
* WHERE...Outer Apostle Islands Beyond 5 NM from Mainland.
* WHEN...For the Small Craft Advisory, until noon CST today. For
the Gale Warning, from noon today to midnight CST tonight.
* IMPACTS...Strong winds will cause hazardous waves which could
capsize or damage vessels and reduce visibility.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
315 AM CST Thu Dec 4 2025
LSZ140>142-042115-
/O.CON.KDLH.SC.Y.0132.000000T0000Z-251204T1800Z/
/O.UPG.KDLH.GL.A.0018.251204T1800Z-251205T0600Z/
/O.NEW.KDLH.GL.W.0034.251204T1800Z-251205T0600Z/
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
315 AM CST Thu Dec 4 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST TODAY...
...GALE WARNING IN EFFECT FROM NOON TODAY TO MIDNIGHT CST
TONIGHT...
* WHAT...For the Small Craft Advisory, west winds 5 to 15 kt
with gusts up to 25 kt and waves 1 to 2 ft. For the Gale
Warning, southwest winds 20 to 30 kt with gusts up to 40 kt
and waves 6 to 9 ft expected.
* WHERE...Grand Portage to Grand Marais MN, Grand Marais to
Taconite Harbor MN and Taconite Harbor to Silver Bay Harbor MN.
* WHEN...For the Small Craft Advisory, until noon CST today. For
the Gale Warning, from noon today to midnight CST tonight.
* IMPACTS...Strong winds will cause hazardous waves which could
capsize or damage vessels and reduce visibility.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
315 AM CST Thu Dec 4 2025
LSZ121-145>148-042115-
/O.CON.KDLH.SC.Y.0132.000000T0000Z-251205T1600Z/
Chequamegon Bay-Bayfield to Oak Point WI-
Duluth MN to Port Wing WI-Port Wing to Sand Island WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
315 AM CST Thu Dec 4 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM CST
FRIDAY...
* WHAT...Southwest winds 15 to 25 kt with gusts up to 35 kt and
waves 2 to 5 ft.
* WHERE...Chequamegon Bay-Bayfield to Oak Point WI, Duluth MN to
Port Wing WI, Port Wing to Sand Island WI, Sand Island to
Bayfield WI and Oak Point to Saxon Harbor WI.
* WHEN...Until 10 AM CST Friday.
* IMPACTS...Conditions will be hazardous to small craft.
* ADDITIONAL DETAILS...Wind gusts may drop below 20 knots for a
time early Thursday morning.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.
&&
$$
BJH
URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
251 AM EST Thu Dec 4 2025
LMZ323-341-342-344>346-042000-
/O.CON.KAPX.SC.Y.0118.000000T0000Z-251204T1800Z/
/O.CON.KAPX.GL.W.0032.251205T0300Z-251205T1500Z/
Grand Traverse Bay south of a line Grand Traverse Light to
Norwood MI-Seul Choix Point to 5NM West of Mackinac Bridge-
Norwood MI to 5NM West of Mackinac Bridge including Little
Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI-
Point Betsie to Sleeping Bear Point MI-
Manistee to Point Betsie MI-
251 AM EST Thu Dec 4 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...
...GALE WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING TO
10 AM EST FRIDAY...
* WHAT...For the Small Craft Advisory, Highest gusts up to 35
kts from the northwest and highest waves around 8 feet. For
the Gale Warning, Highest gusts up to 40 kts from the
southwest and highest waves around 13 feet expected.
* WHERE...Portions of Lake Michigan.
* WHEN...For the Small Craft Advisory, until 1 PM EST Thursday.
For the Gale Warning, from 10 PM Thursday to 10 AM EST Friday.
* IMPACTS...Strong winds will cause hazardous highest waves
which could capsize or damage vessels and reduce visibility.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
251 AM EST Thu Dec 4 2025
LHZ345>349-041800-
/O.CON.KAPX.SC.Y.0118.000000T0000Z-251204T1800Z/
Straits of Mackinac within 5 nm of Mackinac Bridge including
Mackinac Island-St Ignace to False Detour Channel-
5NM East of Mackinac Bridge to Presque Isle Light MI including
Bois Blanc Island-
Presque Isle Light to Sturgeon Pt MI Including Thunder Bay
National Marine Sanctuary-Sturgeon Pt to Alabaster MI-
251 AM EST Thu Dec 4 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...
* WHAT...Highest gusts up to 35 kts from the northwest and
highest waves around 9 feet.
* WHERE...Straits of Mackinac within 5 nm of Mackinac Bridge
including Mackinac Island, St Ignace to False Detour Channel,
5NM East of Mackinac Bridge to Presque Isle Light MI including
Bois Blanc Island, Presque Isle Light to Sturgeon Pt MI
Including Thunder Bay National Marine Sanctuary and Sturgeon
Pt to Alabaster MI.
* WHEN...Until 1 PM EST Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
251 AM EST Thu Dec 4 2025
LSZ321-322-041800-
/O.CON.KAPX.SC.Y.0118.000000T0000Z-251204T1800Z/
Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI-
St. Marys River Point Iroquois to E. Potagannissing Bay-
251 AM EST Thu Dec 4 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...
* WHAT...Highest gusts up to 35 kts from the northwest and
highest waves around 11 feet.
* WHERE...Whitefish Bay (U. S. Portion)/Whitefish Point to Point
Iroquois MI and St. Marys River Point Iroquois to E.
Potagannissing Bay.
* WHEN...Until 1 PM EST Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
