731
WHUS73 KAPX 180620
MWWAPX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
220 AM EDT Mon Aug 18 2025

LHZ348-349-181430-
/O.NEW.KAPX.SC.Y.0081.250818T0800Z-250818T1800Z/
Presque Isle Light to Sturgeon Pt MI Including Thunder Bay
National Marine Sanctuary-Sturgeon Pt to Alabaster MI-
220 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

* WHAT...Highest gusts up to 25 kts from the east and highest
  waves around 5 feet expected.

* WHERE...Presque Isle Light to Sturgeon Pt MI Including Thunder
  Bay National Marine Sanctuary and Sturgeon Pt to Alabaster MI.

* 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.

&&

$$

LHZ345>347-181430-
/O.NEW.KAPX.SC.Y.0081.250818T1400Z-250819T0800Z/
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-
220 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM THIS MORNING TO 4 AM
EDT TUESDAY...

* WHAT...Highest gusts up to 25 kts from the southeast and
  highest waves around 6 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 10 AM this morning to 4 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.

&&

$$

LMZ341-342-181430-
/O.NEW.KAPX.SC.Y.0081.250818T2000Z-250819T0600Z/
Seul Choix Point to 5NM West of Mackinac Bridge-
Norwood MI to 5NM West of Mackinac Bridge including Little
Traverse Bay-
220 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO
2 AM EDT TUESDAY...

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

* WHERE...Seul Choix Point to 5NM West of Mackinac Bridge and
  Norwood MI to 5NM West of Mackinac Bridge including Little
  Traverse Bay.

* WHEN...From 4 PM this afternoon 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.

&&

$$

LSZ321-181430-
/O.NEW.KAPX.SC.Y.0081.250818T2200Z-250819T0600Z/
Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI-
220 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 2 AM
EDT TUESDAY...

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

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

* WHEN...From 6 PM this evening 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.

&&

$$