WHUS73 KAPX 181949
MWWAPX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
349 PM EDT Mon May 18 2026

LHZ345>349-190400-
/O.NEW.KAPX.SC.Y.0041.260519T1200Z-260520T0400Z/
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-Sturgeon Pt to Alabaster MI-
349 PM EDT Mon May 18 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM TUESDAY TO MIDNIGHT
EDT TUESDAY NIGHT...

* WHAT...Highest gusts up to 30 kts from the southwest 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, 
  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 Tuesday to midnight EDT Tuesday 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.

&&

$$

LSZ321-322-190400-
/O.NEW.KAPX.SC.Y.0041.260519T1200Z-260520T0400Z/
Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI-
St. Marys River Point Iroquois to E. Potagannissing Bay-
349 PM EDT Mon May 18 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM TUESDAY TO MIDNIGHT
EDT TUESDAY NIGHT...

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

* WHERE...Whitefish Bay (U. S. Portion)/Whitefish Point to Point 
  Iroquois MI and St. Marys River Point Iroquois to E. 
  Potagannissing Bay.

* WHEN...From 8 AM Tuesday to midnight EDT Tuesday 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.

&&

$$

LMZ323-341-342-344>346-190400-
/O.EXT.KAPX.SC.Y.0040.000000T0000Z-260520T0400Z/
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-
349 PM EDT Mon May 18 2026

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL MIDNIGHT EDT TUESDAY
NIGHT...

* WHAT...Highest gusts up to 30 kts from the southwest and 
  highest waves around 6 feet.

* WHERE...Portions of Lake Michigan. 

* WHEN...Until midnight EDT Tuesday 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.

&&

$$