Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
311 AM EDT Wed Sep 3 2025
LSZ240-031915-
/O.EXT.KMQT.SC.Y.0140.250903T0800Z-250904T1800Z/
Saxon Harbor WI to Black River MI-
311 AM EDT Wed Sep 3 2025 /211 AM CDT Wed Sep 3 2025/
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 2 PM EDT /1 PM CDT/
THURSDAY...
* WHAT...Northwest winds 15 to 20 kt with gusts up to 25 kt and
waves 3 to 6 ft expected.
* WHERE...Saxon Harbor WI to Black River MI.
* WHEN...Until 2 PM EDT /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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
311 AM EDT Wed Sep 3 2025
LSZ241>243-031915-
/O.EXT.KMQT.SC.Y.0140.250903T0711Z-250905T0000Z/
Black River to Ontonagon MI-
Ontonagon to Upper Entrance of Portage Canal MI-
Upper Entrance of Portage Canal to Eagle River MI-
311 AM EDT Wed Sep 3 2025 /211 AM CDT Wed Sep 3 2025/
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT /7 PM CDT/
THURSDAY...
* WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and
waves 5 to 8 ft occurring.
* WHERE...Black River to Ontonagon MI, Ontonagon to Upper
Entrance of Portage Canal MI and Upper Entrance of Portage
Canal to Eagle River MI.
* WHEN...Until 8 PM EDT /7 PM CDT/ Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
311 AM EDT Wed Sep 3 2025
LSZ245>248-031915-
/O.EXT.KMQT.SC.Y.0140.250903T0900Z-250905T0000Z/
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-
311 AM EDT Wed Sep 3 2025
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT THURSDAY...
* WHAT...West to northwest winds 15 to 25 kt with gusts up to 30
kt and waves 3 to 6 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...Until 8 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
311 AM EDT Wed Sep 3 2025
LSZ244-031915-
/O.NEW.KMQT.GL.W.0040.250903T0900Z-250904T0000Z/
/O.EXT.KMQT.SC.Y.0140.250904T0000Z-250905T0000Z/
Eagle River to Manitou Island MI-
311 AM EDT Wed Sep 3 2025
...GALE WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 8 PM THIS EVENING TO
8 PM EDT THURSDAY...
* WHAT...For the Gale Warning, northwest to north winds 15 to 25
kt with gusts up to 35 kt and waves 7 to 10 ft expected. For the
Small Craft Advisory, northwest winds 15 to 25 kt with gusts up
to 30 kt and waves 7 to 10 ft expected.
* WHERE...Eagle River to Manitou Island MI.
* WHEN...For the Gale Warning, until 8 PM EDT this evening. For
the Small Craft Advisory, from 8 PM this evening to 8 PM EDT
Thursday.
* IMPACTS...Strong winds will cause hazardous waves which could
capsize or damage vessels and reduce visibility.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
311 AM EDT Wed Sep 3 2025
LSZ251-031915-
/O.EXT.KMQT.SC.Y.0140.250903T1500Z-250905T0000Z/
Grand Marais to Whitefish Point MI-
311 AM EDT Wed Sep 3 2025
...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 11 AM THIS MORNING TO
8 PM EDT THURSDAY...
* WHAT...West to northwest winds 15 to 25 kt with gusts up to 30
kt and waves 5 to 8 ft expected.
* WHERE...Grand Marais to Whitefish Point MI.
* WHEN...From 11 AM this morning to 8 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
311 AM EDT Wed Sep 3 2025
LMZ221-248-250-031915-
/O.CON.KMQT.SC.Y.0140.000000T0000Z-250904T0000Z/
Green Bay North of line from Cedar River MI to Rock Island
Passage-Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
311 AM EDT Wed Sep 3 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
* WHAT...Southwest to northwest winds 10 to 20 kt with gusts up
to 25 kt and waves 1 to 4 ft occurring.
* WHERE...Green Bay North of line from Cedar River MI to Rock
Island Passage, Seul Choix Point to Point Detour MI and 5NM
East of a line from Fairport MI to Rock Island Passage.
* WHEN...Until 8 PM EDT this evening.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
TAP
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
311 AM EDT Wed Sep 3 2025
LSZ249-250-031915-
/O.EXT.KMQT.SC.Y.0140.250903T1300Z-250905T0000Z/
Marquette to Munising MI-Munising to Grand Marais MI-
311 AM EDT Wed Sep 3 2025
...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 9 AM THIS MORNING TO
8 PM EDT THURSDAY...
* WHAT...West to northwest winds 15 to 25 kt with gusts up to 30
kt and waves 7 to 10 ft expected.
* WHERE...Marquette to Munising MI and Munising to Grand Marais
MI.
* WHEN...From 9 AM this morning to 8 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
359 AM CDT Wed Sep 3 2025
LSZ144>146-032100-
/O.EXT.KDLH.SC.Y.0093.000000T0000Z-250904T2200Z/
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
Port Wing to Sand Island WI-
359 AM CDT Wed Sep 3 2025
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 5 PM CDT THURSDAY...
* WHAT...Northwest winds 10 to 20 kt with gusts up to 25 kt and
waves 1 to 4 ft.
* WHERE...Two Harbors to Duluth MN, Duluth MN to Port Wing WI
and Port Wing to Sand Island WI.
* WHEN...Until 5 PM CDT Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
359 AM CDT Wed Sep 3 2025
LSZ121-147-148-150-032100-
/O.EXT.KDLH.SC.Y.0093.000000T0000Z-250904T2200Z/
Chequamegon Bay-Bayfield to Oak Point WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
359 AM CDT Wed Sep 3 2025
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 5 PM CDT THURSDAY...
* WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and
waves 2 to 5 ft.
* WHERE...Chequamegon Bay-Bayfield to Oak Point WI, Sand Island
to Bayfield WI, Oak Point to Saxon Harbor WI and Outer Apostle
Islands Beyond 5 NM from Mainland.
* WHEN...Until 5 PM CDT Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.
&&
$$
Huyck
URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
359 AM CDT Wed Sep 3 2025
LSZ140>143-032100-
/O.EXT.KDLH.SC.Y.0093.000000T0000Z-250904T2200Z/
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
359 AM CDT Wed Sep 3 2025
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 5 PM CDT THURSDAY...
* WHAT...Northwest winds 10 to 20 kt with gusts up to 30 kt and
waves 1 to 2 ft.
* WHERE...Grand Portage to Grand Marais MN, Grand Marais to
Taconite Harbor MN, Taconite Harbor to Silver Bay Harbor MN
and Silver Bay Harbor to Two Harbors MN.
* WHEN...Until 5 PM CDT Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
338 AM CDT Wed Sep 3 2025
LMZ521-522-541-031645-
/O.NEW.KGRB.SC.Y.0070.250903T1700Z-250904T0000Z/
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-
Rock Island Passage to Sturgeon Bay WI-
338 AM CDT Wed Sep 3 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON TODAY TO 7 PM CDT
THIS EVENING...
* WHAT...Northwest winds 15-20 kt with gusts up to 25 kt and
waves 1 to 4 ft expected.
* WHERE...Central and Southern Bay of Green Bay, and Lake
Michigan nearshore waters from Washington Island to Sturgeon
Bay.
* WHEN...From noon today to 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
321 AM EDT Wed Sep 3 2025
LMZ323-341-342-344>346-031530-
/O.CON.KAPX.SC.Y.0087.000000T0000Z-250904T0300Z/
Grand Traverse Bay south of a line Grand Traverse Light to
Norwood MI-Seul Choix Point to 5NM West of Mackinac Bridge-
Norwood MI to 5NM West of Mackinac Bridge including Little
Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI-
Point Betsie to Sleeping Bear Point MI-
Manistee to Point Betsie MI-
321 AM EDT Wed Sep 3 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM EDT THIS
EVENING...
* WHAT...Highest gusts up to 25 kts from the west and highest
waves around 5 feet expected.
* WHERE...Portions of Lake Michigan.
* WHEN...From 2 AM to 11 PM EDT Wednesday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
321 AM EDT Wed Sep 3 2025
LSZ321-031530-
/O.EXB.KAPX.SC.Y.0087.250903T1700Z-250904T0900Z/
Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI-
321 AM EDT Wed Sep 3 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO
5 AM EDT THURSDAY...
* WHAT...Highest gusts up to 25 kts from the west and highest
waves around 7 feet expected.
* WHERE...Whitefish Bay (U. S. Portion)/Whitefish Point to Point
Iroquois MI.
* WHEN...From 1 PM this afternoon to 5 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
321 AM EDT Wed Sep 3 2025
LHZ345-031530-
/O.EXT.KAPX.SC.Y.0087.250903T1000Z-250904T0300Z/
Straits of Mackinac within 5 nm of Mackinac Bridge including
Mackinac Island-
321 AM EDT Wed Sep 3 2025
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 11 PM EDT THIS
EVENING...
* WHAT...Highest gusts up to 25 kts from the southwest and
highest waves around 4 feet expected.
* WHERE...Straits of Mackinac within 5 nm of Mackinac Bridge
including Mackinac Island, St Ignace to False Detour Channel,
5NM East of Mackinac Bridge to Presque Isle Light MI including
Bois Blanc Island, Presque Isle Light to Sturgeon Pt MI
Including Thunder Bay National Marine Sanctuary and Sturgeon
Pt to Alabaster MI.
* WHEN...Until 11 PM EDT this evening.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
321 AM EDT Wed Sep 3 2025
LHZ346>349-031530-
/O.CON.KAPX.SC.Y.0087.250903T1200Z-250904T0300Z/
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-
321 AM EDT Wed Sep 3 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 AM THIS MORNING
TO 11 PM EDT THIS EVENING...
* WHAT...Highest gusts up to 25 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,
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 8 AM to 11 PM EDT 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.
&&
$$
