828
WHUS73 KAPX 042110
MWWAPX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
410 PM EST Thu Dec 4 2025

LHZ345-050515-
/O.CAN.KAPX.SC.Y.0118.000000T0000Z-251204T2200Z/
/O.EXB.KAPX.GL.W.0032.251205T0300Z-251205T1600Z/
Straits of Mackinac within 5 nm of Mackinac Bridge including
Mackinac Island-
410 PM EST Thu Dec 4 2025

...GALE WARNING IN EFFECT FROM 10 PM THIS EVENING TO 11 AM EST
FRIDAY...

* WHAT...Highest gusts up to 35 kts from the southwest and
  highest waves around 6 feet expected.

* WHERE...Straits of Mackinac within 5 nm of Mackinac Bridge
  including Mackinac Island.

* WHEN...From 10 PM this evening to 11 AM EST Friday.

* IMPACTS...Strong winds will cause hazardous highest 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.

&&

$$

LSZ321-050515-
/O.CAN.KAPX.SC.Y.0118.000000T0000Z-251204T2200Z/
/O.EXB.KAPX.GL.W.0032.251205T0400Z-251205T1600Z/
Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI-
410 PM EST Thu Dec 4 2025

...GALE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 11 AM EST
FRIDAY...

* WHAT...Highest gusts up to 40 kts from the southwest and
  highest waves around 6 feet expected.

* WHERE...Whitefish Bay (U. S. Portion)/Whitefish Point to Point
  Iroquois MI.

* WHEN...From 11 PM this evening to 11 AM EST Friday.

* IMPACTS...Strong winds will cause hazardous highest 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.

&&

$$

LMZ323-341-342-344>346-050515-
/O.EXT.KAPX.GL.W.0032.251205T0300Z-251205T1600Z/
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-
410 PM EST Thu Dec 4 2025

...GALE WARNING NOW IN EFFECT FROM 10 PM THIS EVENING TO 11 AM
EST FRIDAY...

* WHAT...Highest gusts up to 40 kts from the southwest and
  highest waves around 13 feet expected.

* WHERE...Portions of Lake Michigan.

* WHEN...From 10 PM this evening to 11 AM EST Friday.

* IMPACTS...Strong winds will cause hazardous highest 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.

&&

$$

LSZ322-050515-
/O.NEW.KAPX.SC.Y.0119.251205T0400Z-251206T1600Z/
St. Marys River Point Iroquois to E. Potagannissing Bay-
410 PM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO
11 AM EST SATURDAY...

* WHAT...Highest gusts up to 30 kts from the southwest.

* WHERE...St. Marys River Point Iroquois to E. Potagannissing
  Bay.

* WHEN...From 11 PM this evening to 11 AM EST 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.

&&

$$

LHZ346-050515-
/O.EXB.KAPX.SC.Y.0118.000000T0000Z-251205T2200Z/
St Ignace to False Detour Channel-
410 PM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 PM EST FRIDAY...

* WHAT...Highest gusts up to 30 kts from the southwest and
  highest waves around 7 feet.

* WHERE...St Ignace to False Detour Channel.

* WHEN...Until 5 PM EST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LHZ347-348-050515-
/O.EXT.KAPX.SC.Y.0118.000000T0000Z-251205T2200Z/
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-
410 PM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 5 PM EST FRIDAY...

* WHAT...Highest gusts up to 30 kts from the southwest and
  highest waves around 7 feet.

* WHERE...5NM East of Mackinac Bridge to Presque Isle Light MI
  including Bois Blanc Island and Presque Isle Light to Sturgeon
  Pt MI Including Thunder Bay National Marine Sanctuary.

* WHEN...Until 5 PM EST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LHZ349-050515-
/O.EXT.KAPX.SC.Y.0118.000000T0000Z-251206T1000Z/
Sturgeon Pt to Alabaster MI-
410 PM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 5 AM EST SATURDAY...

* WHAT...Highest gusts up to 30 kts from the southwest and
  highest waves around 8 feet.

* WHERE...Sturgeon Pt to Alabaster MI.

* WHEN...Until 5 AM EST 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.

&&

$$

JPB