Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
933 PM EST Tue Dec 9 2025
LMZ221-248-250-101445-
/O.CON.KMQT.SC.Y.0197.251210T0900Z-251210T2100Z/
Green Bay North of line from Cedar River MI to Rock Island
Passage-Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
933 PM EST Tue Dec 9 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM TO 4 PM EST
WEDNESDAY...
* WHAT...North winds 15 to 20 kt with gusts up to 30 kt and
waves 1 to 4 ft expected.
* WHERE...Green Bay North of line from Cedar River MI to Rock
Island Passage, Seul Choix Point to Point Detour MI and 5NM
East of a line from Fairport MI to Rock Island Passage.
* WHEN...From 4 AM to 4 PM EST Wednesday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
933 PM EST Tue Dec 9 2025
LSZ240-241-101445-
/O.CON.KMQT.SC.Y.0197.251210T0900Z-251211T0100Z/
Saxon Harbor WI to Black River MI-Black River to Ontonagon MI-
933 PM EST Tue Dec 9 2025 /833 PM CST Tue Dec 9 2025/
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM EST /3 AM
CST/ TO 8 PM EST /7 PM CST/ WEDNESDAY...
* WHAT...North winds 15 to 25 kt with gusts up to 35 kt and
waves 7 to 10 ft expected.
* WHERE...Saxon Harbor WI to Black River MI and Black River to
Ontonagon MI.
* WHEN...From 4 AM EST /3 AM CST/ to 8 PM EST /7 PM CST/
Wednesday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
259 AM CST Wed Dec 10 2025
LMZ521-522-101800-
/O.CON.KGRB.SC.Y.0095.000000T0000Z-251211T0000Z/
Green Bay south of line from Cedar River to Rock Island Passage
and north of a line from Oconto WI to Little Sturgeon Bay WI-
Green Bay south of line from Oconto WI to Little Sturgeon Bay WI-
259 AM CST Wed Dec 10 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...
* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and
waves 2 to 5 ft.
* WHERE...Central and Southern Bay of Green Bay.
* WHEN...Until 6 PM CST 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
259 AM CST Wed Dec 10 2025
LMZ541-101800-
/O.CON.KGRB.SC.Y.0095.000000T0000Z-251211T0000Z/
Rock Island Passage to Sturgeon Bay WI-
259 AM CST Wed Dec 10 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...
* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and
waves 3 to 6 ft.
* WHERE...Lake Michigan nearshore waters from Washington Island
to Sturgeon Bay.
* WHEN...Until 6 PM CST this evening.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
JLA
URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
245 AM CST Wed Dec 10 2025
LSZ121-145>148-150-101600-
/O.CON.KDLH.SC.Y.0136.000000T0000Z-251210T1600Z/
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-
Outer Apostle Islands Beyond 5 NM from Mainland-
245 AM CST Wed Dec 10 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM CST THIS
MORNING...
* WHAT...North winds 10 to 20 kt with gusts up to 30 kt and
waves 4 to 7 ft.
* WHERE...Portions of Lake Superior.
* WHEN...Until 10 AM CST this morning.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
245 AM CST Wed Dec 10 2025
LSZ140-141-102045-
/O.CAN.KDLH.GL.W.0035.000000T0000Z-251210T1600Z/
/O.EXB.KDLH.SC.Y.0136.000000T0000Z-251211T0700Z/
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
245 AM CST Wed Dec 10 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM CST THURSDAY...
...GALE WARNING IS CANCELLED...
* WHAT...North winds 10 to 20 kt with gusts up to 30 kt and
waves up to 3 ft.
* WHERE...Grand Portage to Grand Marais MN and Grand Marais to
Taconite Harbor MN.
* WHEN...Until 1 AM CST Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
245 AM CST Wed Dec 10 2025
LSZ142>144-101600-
/O.CON.KDLH.SC.Y.0136.000000T0000Z-251210T1600Z/
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-Two Harbors to Duluth MN-
245 AM CST Wed Dec 10 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM CST THIS
MORNING...
* WHAT...Waves 2 to 4 ft.
* WHERE...Taconite Harbor to Silver Bay Harbor MN, Silver Bay
Harbor to Two Harbors MN and Two Harbors to Duluth MN.
* WHEN...Until 10 AM CST this morning.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
341 AM EST Wed Dec 10 2025
LHZ345>349-101845-
/O.CON.KAPX.SC.Y.0122.251210T1400Z-251211T1200Z/
Straits of Mackinac within 5 nm of Mackinac Bridge including
Mackinac Island-St Ignace to False Detour Channel-
5NM East of Mackinac Bridge to Presque Isle Light MI including
Bois Blanc Island-
Presque Isle Light to Sturgeon Pt MI Including Thunder Bay
National Marine Sanctuary-Sturgeon Pt to Alabaster MI-
341 AM EST Wed Dec 10 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING
TO 7 AM EST THURSDAY...
* WHAT...Highest gusts up to 35 kts from the north and highest
waves around 7 feet expected.
* WHERE...Straits of Mackinac within 5 nm of Mackinac Bridge
including Mackinac Island, St Ignace to False Detour Channel,
5NM East of Mackinac Bridge to Presque Isle Light MI including
Bois Blanc Island, Presque Isle Light to Sturgeon Pt MI
Including Thunder Bay National Marine Sanctuary and Sturgeon
Pt to Alabaster MI.
* WHEN...From 9 AM this morning to 7 AM EST Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
341 AM EST Wed Dec 10 2025
LMZ323-341-342-344>346-101845-
/O.CON.KAPX.SC.Y.0122.251210T0900Z-251211T1200Z/
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-
341 AM EST Wed Dec 10 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST
THURSDAY...
* WHAT...Highest gusts up to 35 kts from the north and highest
waves around 9 feet expected.
* WHERE...Portions of Lake Michigan.
* WHEN...Until 7 AM 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
341 AM EST Wed Dec 10 2025
LSZ321-101845-
/O.CON.KAPX.SC.Y.0122.251210T1800Z-251211T1200Z/
Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI-
341 AM EST Wed Dec 10 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 PM THIS
AFTERNOON TO 7 AM EST THURSDAY...
* WHAT...Highest gusts up to 30 kts from the north and highest
waves around 9 feet expected.
* WHERE...Whitefish Bay (U. S. Portion)/Whitefish Point to Point
Iroquois MI.
* WHEN...From 1 PM this afternoon to 7 AM EST Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
