Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
440 PM EDT Wed Jul 16 2025
LMZ221-248-250-170845-
/O.CON.KMQT.SC.Y.0123.250717T0000Z-250717T1800Z/
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-
440 PM EDT Wed Jul 16 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 2 PM EDT THURSDAY...
* 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 8 PM this evening to 2 PM EDT 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
440 PM EDT Wed Jul 16 2025
LSZ240>242-170000-
/O.CON.KMQT.SC.Y.0123.000000T0000Z-250717T0000Z/
Saxon Harbor WI to Black River MI-Black River to Ontonagon MI-
Ontonagon to Upper Entrance of Portage Canal MI-
440 PM EDT Wed Jul 16 2025 /340 PM CDT Wed Jul 16 2025/
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT /7 PM
CDT/ THIS EVENING...
* WHAT...Northeast winds 10 to 20 kt with gusts up to 25 kt and
waves 3 to 5 ft occurring.
* WHERE...Saxon Harbor WI to Black River MI, Black River to
Ontonagon MI and Ontonagon to Upper Entrance of Portage Canal
MI.
* WHEN...Until 8 PM EDT /7 PM CDT/ this evening.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
440 PM EDT Wed Jul 16 2025
LSZ248-170845-
/O.CON.KMQT.SC.Y.0123.000000T0000Z-250717T1200Z/
Huron Islands to Marquette MI-
440 PM EDT Wed Jul 16 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT
THURSDAY...
* WHAT...North winds 10 to 15 kt with gusts up to 20 kt and
waves 2 to 5 ft occurring.
* WHERE...Huron Islands to Marquette MI.
* WHEN...Until 8 AM EDT 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
440 PM EDT Wed Jul 16 2025
LSZ249-250-170845-
/O.CON.KMQT.SC.Y.0124.000000T0000Z-250717T1600Z/
Marquette to Munising MI-Munising to Grand Marais MI-
440 PM EDT Wed Jul 16 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON EDT
THURSDAY...
* WHAT...North winds 10 to 20 kt with gusts up to 25 kt and
waves 4 to 7 ft expected.
* WHERE...Marquette to Munising MI and Munising to Grand Marais
MI.
* WHEN...From 2 PM this afternoon to noon EDT Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
440 PM EDT Wed Jul 16 2025
LSZ251-170845-
/O.CON.KMQT.SC.Y.0124.250717T0800Z-250717T1600Z/
Grand Marais to Whitefish Point MI-
440 PM EDT Wed Jul 16 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM TO NOON EDT
THURSDAY...
* WHAT...North winds 15 to 20 kt with gusts up to 25 kt and
waves 3 to 6 ft expected.
* WHERE...Grand Marais to Whitefish Point MI.
* WHEN...From 4 AM to noon EDT 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
501 PM CDT Wed Jul 16 2025
LMZ521-522-170615-
/O.EXT.KGRB.SC.Y.0062.250716T2201Z-250717T1800Z/
Green Bay south of line from Cedar River to Rock Island Passage
and north of a line from Oconto WI to Little Sturgeon Bay WI-
Green Bay south of line from Oconto WI to Little Sturgeon Bay WI-
501 PM CDT Wed Jul 16 2025
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 1 PM CDT THURSDAY...
* WHAT...North winds 10 to 20 kt with gusts of 25 to 30 kt and
waves 2 to 5 ft.
* WHERE...Central and Southern Bay of Green Bay.
* WHEN...Until 1 PM CDT Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
501 PM CDT Wed Jul 16 2025
LMZ541>543-170615-
/O.EXT.KGRB.SC.Y.0062.250716T2201Z-250717T1800Z/
Rock Island Passage to Sturgeon Bay WI-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
501 PM CDT Wed Jul 16 2025
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 1 PM CDT THURSDAY...
* WHAT...North winds 15 to 20 kt with gusts up to 25 kt and
waves 1 to 4 ft.
* WHERE...Lake Michigan nearshore waters from Washington Island
to Sheboygan.
* WHEN...Until 1 PM CDT 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
437 PM EDT Wed Jul 16 2025
LMZ323-342-344>346-170445-
/O.NEW.KAPX.SC.Y.0073.250717T0000Z-250717T2100Z/
Grand Traverse Bay south of a line Grand Traverse Light to
Norwood MI-
Norwood MI to 5NM West of Mackinac Bridge including Little
Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI-
Point Betsie to Sleeping Bear Point MI-
Manistee to Point Betsie MI-
437 PM EDT Wed Jul 16 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 5 PM
EDT THURSDAY...
* WHAT...Highest gusts up to 25 kts from the north and highest
waves around 6 feet expected.
* WHERE...Grand Traverse Bay south of a line Grand Traverse
Light to Norwood MI, Norwood MI to 5NM West of Mackinac Bridge
including Little Traverse Bay, Sleeping Bear Point to Grand
Traverse Light MI, Point Betsie to Sleeping Bear Point MI and
Manistee to Point Betsie MI.
* WHEN...From 8 PM this evening to 5 PM EDT Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
437 PM EDT Wed Jul 16 2025
LMZ341-170445-
/O.NEW.KAPX.SC.Y.0073.250717T0400Z-250717T1600Z/
Seul Choix Point to 5NM West of Mackinac Bridge-
437 PM EDT Wed Jul 16 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO NOON
EDT THURSDAY...
* WHAT...Highest gusts up to 25 kts from the north and highest
waves around 3 feet expected.
* WHERE...Seul Choix Point to 5NM West of Mackinac Bridge.
* WHEN...From midnight tonight to noon EDT 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
148 PM CDT Wed Jul 16 2025
LSZ121-145>148-150-170300-
/O.EXT.KDLH.SC.Y.0082.000000T0000Z-250717T0300Z/
Chequamegon Bay-Bayfield to Oak Point WI-
Duluth MN to Port Wing WI-Port Wing to Sand Island WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
148 PM CDT Wed Jul 16 2025
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 PM CDT THIS
EVENING...
* WHAT...Northeast winds 10 to 20 kt with gusts up to 25 kt and
waves 2 to 5 ft.
* WHERE...Portions of Lake Superior.
* WHEN...Until 10 PM CDT this evening.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.
&&
$$
