WHUS73 KDTX 201943

MWWDTX



URGENT - MARINE WEATHER MESSAGE

National Weather Service Detroit/Pontiac MI

343 PM EDT Sun Sep 20 2026



LHZ421-422-441>443-211415-

/O.CON.KDTX.SC.Y.0056.000000T0000Z-260924T0200Z/

Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner

Saginaw Bay-Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-

Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI-

Port Sanilac to Port Huron MI-

343 PM EDT Sun Sep 20 2026



...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM EDT

WEDNESDAY...



* WHAT...Expect sustained winds up to 25 knots from the 

  northeast with gusts up to 33 knots. The largest significant 

  waves will be 7 feet with a potential maximum wave height of 

  10 feet.



* WHERE...Outer Saginaw Bay SW of Alabaster to Port Austin MI to 

  Inner Saginaw Bay, Inner Saginaw Bay SW of Point Au Gres to 

  Bay Port MI, Port Austin to Harbor Beach MI, Harbor Beach to 

  Port Sanilac MI and Port Sanilac to Port Huron MI.



* WHEN...The maximum winds are expected around 9 PM EDT Sunday 

  with the largest waves expected around 6 AM 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.



&&



$$



LCZ460-211415-

/O.CON.KDTX.SC.Y.0056.260921T0000Z-260924T0200Z/

Lake St Clair-

343 PM EDT Sun Sep 20 2026



...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING

TO 10 PM EDT WEDNESDAY...



* WHAT...Expect sustained winds up to 28 knots from the 

  northeast with gusts up to 33 knots. The largest significant 

  waves will be 4 feet with a potential maximum wave height of 5 

  feet.



* WHERE...Lake St Clair.



* WHEN...The maximum winds are expected around 11 PM EDT Tuesday 

  with the largest waves expected around 12 AM EDT Wednesday.



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



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Inexperienced mariners, especially those operating smaller

vessels, should avoid navigating in hazardous conditions.



&&



$$



LEZ444-211415-

/O.CON.KDTX.SC.Y.0056.260921T0000Z-260924T0200Z/

Michigan Waters of Lake Erie from Detroit River to North Cape MI-

343 PM EDT Sun Sep 20 2026



...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING

TO 10 PM EDT WEDNESDAY...



* WHAT...Expect sustained winds up to 25 knots from the 

  northeast with gusts up to 33 knots. The largest significant 

  waves will be 5 feet with a potential maximum wave height of 7 

  feet.



* WHERE...Michigan Waters of Lake Erie from Detroit River to 

  North Cape MI.



* WHEN...The maximum winds are expected around 10 PM EDT Tuesday 

  with the largest waves expected around 3 AM EDT Wednesday.



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



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Inexperienced mariners, especially those operating smaller

vessels, should avoid navigating in hazardous conditions.



&&



$$