Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
346 PM EST Tue Dec 9 2025
LMZ221-248-250-100900-
/O.NEW.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-
346 PM EST Tue Dec 9 2025
...SMALL CRAFT ADVISORY 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
346 PM EST Tue Dec 9 2025
LSZ240-241-100900-
/O.NEW.KMQT.SC.Y.0197.251210T0900Z-251211T0100Z/
Saxon Harbor WI to Black River MI-Black River to Ontonagon MI-
346 PM EST Tue Dec 9 2025 /246 PM CST Tue Dec 9 2025/
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM EST /3 AM CST/ TO
8 PM EST /7 PM CST/ WEDNESDAY...
* WHAT...North winds 15 to 20 kt with gusts up to 30 kt and
waves 7 to 10 ft expected.
* WHERE...Saxon Harbor WI to Black River MI and Black River to
Ontonagon MI.
* WHEN...From 4 AM EST /3 AM CST/ to 8 PM EST /7 PM CST/
Wednesday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
130 PM CST Tue Dec 9 2025
LMZ521-522-100330-
/O.CON.KGRB.SC.Y.0095.251210T0600Z-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-
130 PM CST Tue Dec 9 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 6 PM CST WEDNESDAY...
* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and
waves 3 to 6 ft expected.
* WHERE...Central and Southern Bay of Green Bay.
* WHEN...From midnight tonight to 6 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
130 PM CST Tue Dec 9 2025
LMZ541-100330-
/O.CON.KGRB.SC.Y.0094.000000T0000Z-251209T2100Z/
/O.CON.KGRB.SC.Y.0095.251210T0600Z-251211T0000Z/
Rock Island Passage to Sturgeon Bay WI-
130 PM CST Tue Dec 9 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 6 PM CST WEDNESDAY...
* WHAT...For the first Small Craft Advisory, west winds around
10 kt with gusts up to 15 kt and waves 3 to 4 ft. For the
second Small Craft Advisory, north winds 15 to 25 kt with
gusts up to 30 kt and waves 4 to 7 ft expected.
* WHERE...Lake Michigan nearshore waters from Washington Island
to Sturgeon Bay.
* WHEN...For the first Small Craft Advisory, until 3 PM CST this
afternoon. For the second Small Craft Advisory, from midnight
tonight to 6 PM CST Wednesday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
143 PM EST Tue Dec 9 2025
LMZ323-341-342-344>346-100245-
/O.NEW.KAPX.SC.Y.0122.251210T0900Z-251211T0300Z/
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-
143 PM EST Tue Dec 9 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM TO 10 PM EST
WEDNESDAY...
* WHAT...Highest gusts up to 30 kts from the north and highest
waves around 8 feet expected.
* WHERE...Portions of Lake Michigan.
* WHEN...From 4 AM to 10 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
143 PM EST Tue Dec 9 2025
LHZ345>347-100245-
/O.NEW.KAPX.SC.Y.0122.251210T1400Z-251211T0300Z/
Straits of Mackinac within 5 nm of Mackinac Bridge including
Mackinac Island-St Ignace to False Detour Channel-
5NM East of Mackinac Bridge to Presque Isle Light MI including
Bois Blanc Island-
143 PM EST Tue Dec 9 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM TO 10 PM EST
WEDNESDAY...
* WHAT...Highest gusts up to 30 kts from the north and highest
waves around 7 feet expected.
* WHERE...Straits of Mackinac within 5 nm of Mackinac Bridge
including Mackinac Island, St Ignace to False Detour Channel
and 5NM East of Mackinac Bridge to Presque Isle Light MI
including Bois Blanc Island.
* WHEN...From 9 AM to 10 PM EST Wednesday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
1115 AM CST Tue Dec 9 2025
LSZ121-145>148-150-100515-
/O.CON.KDLH.SC.Y.0136.251210T0400Z-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-
1115 AM CST Tue Dec 9 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING
TO 10 AM CST WEDNESDAY...
* WHAT...Northeast winds 15 to 20 kt with gusts up to 30 kt and
waves 4 to 7 ft expected.
* WHERE...Portions of Lake Superior.
* WHEN...From 10 PM this evening to 10 AM CST Wednesday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
1115 AM CST Tue Dec 9 2025
LSZ142>144-100515-
/O.CON.KDLH.SC.Y.0136.251210T0400Z-251210T1600Z/
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-Two Harbors to Duluth MN-
1115 AM CST Tue Dec 9 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING
TO 10 AM CST WEDNESDAY...
* WHAT...North winds 10 to 20 kt with gusts up to 30 kt and
waves 2 to 5 ft expected.
* WHERE...Taconite Harbor to Silver Bay Harbor MN, Silver Bay
Harbor to Two Harbors MN and Two Harbors to Duluth MN.
* WHEN...From 10 PM this evening to 10 AM CST Wednesday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.
&&
$$
