199
WHUS73 KAPX 181821
MWWAPX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
221 PM EDT Mon Aug 18 2025

LHZ348-349-181930-
/O.EXP.KAPX.SC.Y.0081.000000T0000Z-250818T1800Z/
Presque Isle Light to Sturgeon Pt MI Including Thunder Bay
National Marine Sanctuary-Sturgeon Pt to Alabaster MI-
221 PM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY HAS EXPIRED...

$$

LSZ321-190515-
/O.EXT.KAPX.SC.Y.0081.250818T2200Z-250819T0800Z/
Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI-
221 PM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 6 PM THIS EVENING TO
4 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 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.

&&

$$

LHZ345>347-190515-
/O.CON.KAPX.SC.Y.0081.000000T0000Z-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-
221 PM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM EDT
TUESDAY...

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

* 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...Until 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.

&&

$$

LMZ341-342-190515-
/O.CON.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-
221 PM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 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...Until 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.

&&

$$