818
WHUS73 KAPX 240753
MWWAPX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
353 AM EDT Sun Aug 24 2025

LMZ323-342-344-241600-
/O.NEW.KAPX.SC.Y.0083.250824T2100Z-250826T0400Z/
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-
353 AM EDT Sun Aug 24 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO
MIDNIGHT EDT MONDAY NIGHT...

* WHAT...Highest gusts up to 25 kts from the northwest and
  highest waves around 4 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 and Sleeping Bear Point to Grand
  Traverse Light MI.

* WHEN...From 5 PM this afternoon to midnight EDT Monday night.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ321-241600-
/O.NEW.KAPX.SC.Y.0083.250824T2300Z-250826T0400Z/
Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI-
353 AM EDT Sun Aug 24 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO
MIDNIGHT EDT MONDAY NIGHT...

* WHAT...Highest gusts up to 25 kts from the northwest and
  highest waves around 7 feet expected.

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

* WHEN...From 7 PM this evening to midnight EDT Monday night.

* 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>348-241600-
/O.NEW.KAPX.SC.Y.0083.250825T0600Z-250826T0600Z/
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-
353 AM EDT Sun Aug 24 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM MONDAY TO 2 AM EDT
TUESDAY...

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

* WHERE...St Ignace to False Detour Channel, 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...From 2 AM Monday to 2 AM EDT Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ322-241600-
/O.NEW.KAPX.SC.Y.0083.250825T1000Z-250826T0000Z/
St. Marys River Point Iroquois to E. Potagannissing Bay-
353 AM EDT Sun Aug 24 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM TO 8 PM EDT MONDAY...

* WHAT...Highest gusts up to 25 kts from the northwest and
  highest waves around 4 feet expected.

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

* WHEN...From 6 AM to 8 PM 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.

&&

$$

LHZ345-LMZ341-241600-
/O.NEW.KAPX.SC.Y.0083.250825T1000Z-250826T0000Z/
Straits of Mackinac within 5 nm of Mackinac Bridge including
Mackinac Island-Seul Choix Point to 5NM West of Mackinac Bridge-
353 AM EDT Sun Aug 24 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM TO 8 PM EDT MONDAY...

* WHAT...Highest gusts up to 25 kts from the northwest and
  highest waves around 3 feet expected.

* WHERE...In Lake Huron, Straits of Mackinac within 5 nm of
  Mackinac Bridge including Mackinac Island. In Lake Michigan,
  Seul Choix Point to 5NM West of Mackinac Bridge.

* WHEN...From 6 AM to 8 PM 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.

&&

$$