Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
259 AM EDT Sat Sep 12 2026
LMZ323-342-344>346-121500-
/O.CON.KAPX.SC.Y.0078.260912T1200Z-260913T0000Z/
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-
259 AM EDT Sat Sep 12 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 AM THIS MORNING
TO 8 PM EDT THIS EVENING...
* WHAT...Highest gusts up to 30 kts from the southwest and
highest waves around 5 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 AM to 8 PM EDT Saturday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
259 AM EDT Sat Sep 12 2026
LHZ345>347-121500-
/O.CON.KAPX.SC.Y.0078.260912T1600Z-260913T0000Z/
Straits of Mackinac within 5 nm of Mackinac Bridge including
Mackinac Island-St Ignace to False Detour Channel-
5NM East of Mackinac Bridge to Presque Isle Light MI including
Bois Blanc Island-
259 AM EDT Sat Sep 12 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 8 PM
EDT THIS EVENING...
* WHAT...Highest gusts up to 30 kts from the southwest and
highest waves around 4 feet expected.
* WHERE...Straits of Mackinac within 5 nm of Mackinac Bridge
including Mackinac Island, St Ignace to False Detour Channel
and 5NM East of Mackinac Bridge to Presque Isle Light MI
including Bois Blanc Island.
* WHEN...From noon to 8 PM EDT Saturday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
259 AM EDT Sat Sep 12 2026
LMZ341-121500-
/O.CON.KAPX.SC.Y.0078.000000T0000Z-260913T0000Z/
Seul Choix Point to 5NM West of Mackinac Bridge-
259 AM EDT Sat Sep 12 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
* WHAT...Highest gusts up to 30 kts from the southwest and
highest waves around 6 feet.
* WHERE...Seul Choix Point to 5NM West of Mackinac Bridge.
* WHEN...Until 8 PM EDT Saturday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
259 AM EDT Sat Sep 12 2026
LSZ321-322-121500-
/O.EXA.KAPX.SC.Y.0078.260912T1200Z-260913T0000Z/
Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI-
St. Marys River Point Iroquois to E. Potagannissing Bay-
259 AM EDT Sat Sep 12 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM THIS MORNING TO 8 PM
EDT THIS EVENING...
* WHAT...Highest gusts up to 25 kts from the southwest and
highest waves around 4 feet expected.
* WHERE...Whitefish Bay (U. S. Portion)/Whitefish Point to Point
Iroquois MI and St. Marys River Point Iroquois to E.
Potagannissing Bay.
* WHEN...From 8 AM to 8 PM EDT Saturday.
* IMPACTS...Conditions will be hazardous to small craft.
* ADDITIONAL DETAILS...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
254 AM CDT Sat Sep 12 2026
LMZ541-121600-
/O.CON.KGRB.SC.Y.0078.000000T0000Z-260912T1800Z/
Rock Island Passage to Sturgeon Bay WI-
254 AM CDT Sat Sep 12 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 PM CDT THIS
AFTERNOON...
* WHAT...Southwest winds 10 to 15 kt with gusts up to 25 kt and
waves 3 to 5 ft.
* WHERE...Lake Michigan nearshore waters from Washington Island
to Sturgeon Bay.
* WHEN...Until 1 PM CDT this afternoon.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
254 AM CDT Sat Sep 12 2026
LMZ542-543-121500-
/O.CON.KGRB.SC.Y.0078.000000T0000Z-260912T1500Z/
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
254 AM CDT Sat Sep 12 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM CDT THIS
MORNING...
* WHAT...South winds 10 to 15 kt with gusts up to 20 kt and
waves 2 to 4 ft.
* WHERE...Lake Michigan nearshore waters from Sturgeon Bay to
Sheboygan.
* WHEN...Until 10 AM CDT this morning.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
317 AM EDT Sat Sep 12 2026
LSZ251-121930-
/O.EXT.KMQT.SC.Y.0132.000000T0000Z-260914T0600Z/
Grand Marais to Whitefish Point MI-
317 AM EDT Sat Sep 12 2026
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 2 AM EDT MONDAY...
* WHAT...West winds 15 to 25 kt with gusts up to 30 kt and waves
4 to 7 ft occurring.
* WHERE...Grand Marais to Whitefish Point MI.
* WHEN...Until 2 AM EDT Monday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
317 AM EDT Sat Sep 12 2026
LSZ245>248-121930-
/O.EXT.KMQT.SC.Y.0132.000000T0000Z-260914T0000Z/
Manitou Island to Point Isabelle MI-
Point Isabelle to Lower Entrance of Portage Canal MI-
Lower Entrance of Portage Canal To Huron Islands MI Including
Keweenaw and Huron Bays-Huron Islands to Marquette MI-
317 AM EDT Sat Sep 12 2026
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT SUNDAY...
* WHAT...West winds 10 to 20 kt with gusts up to 30 kt and waves
1 to 3 ft occurring.
* WHERE...Manitou Island to Point Isabelle MI, Point Isabelle to
Lower Entrance of Portage Canal MI, Lower Entrance of Portage
Canal To Huron Islands MI Including Keweenaw and Huron Bays
and Huron Islands to Marquette MI.
* WHEN...Until 8 PM EDT Sunday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
317 AM EDT Sat Sep 12 2026
LMZ248-250-121800-
/O.CON.KMQT.SC.Y.0132.000000T0000Z-260912T1800Z/
Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
317 AM EDT Sat Sep 12 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT THIS
AFTERNOON...
* WHAT...Southwest winds 15 to 20 kt with gusts up to 25 kt and
waves 3 to 5 ft occurring.
* WHERE...Seul Choix Point to Point Detour MI and 5NM East of a
line from Fairport MI to Rock Island Passage.
* WHEN...Until 2 PM EDT this afternoon.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
317 AM EDT Sat Sep 12 2026
LSZ249-250-121930-
/O.EXT.KMQT.SC.Y.0132.000000T0000Z-260914T0000Z/
Marquette to Munising MI-Munising to Grand Marais MI-
317 AM EDT Sat Sep 12 2026
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT SUNDAY...
* WHAT...West winds 10 to 20 kt with gusts up to 30 kt and waves
3 to 6 ft occurring.
* WHERE...Marquette to Munising MI and Munising to Grand Marais
MI.
* WHEN...Until 8 PM EDT Sunday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Grand Rapids MI
149 AM EDT Sat Sep 12 2026
LMZ847>849-121400-
/O.CON.KGRR.SC.Y.0065.260912T1200Z-260913T0000Z/
Grand Haven to Whitehall MI-Whitehall to Pentwater MI-
Pentwater to Manistee MI-
149 AM EDT Sat Sep 12 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 AM THIS MORNING
TO 8 PM EDT THIS EVENING...
* WHAT...Southwest winds 10 to 20 knots with gusts up to 25
knots and waves 2 to 5 feet expected.
* WHERE...Grand Haven to Manistee.
* WHEN...From 8 AM to 8 PM EDT Saturday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
