343
WHUS73 KDTX 180805
MWWDTX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
405 AM EDT Mon Aug 18 2025

LHZ421-441-181600-
/O.CON.KDTX.SC.Y.0061.000000T0000Z-250818T1600Z/
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-Port Austin to Harbor Beach MI-
405 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON TODAY...

* WHAT...Expect sustained winds up to 20 knots from the east with
  gusts up to 25 knots. The largest significant waves will be 5
  feet with a potential maximum wave height of 7 feet.

* WHERE...Outer Saginaw Bay SW of Alabaster to Port Austin MI to
  Inner Saginaw Bay and Port Austin to Harbor Beach MI.

* WHEN...The maximum winds and waves are expected this morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LHZ442-443-181200-
/O.CON.KDTX.SC.Y.0061.000000T0000Z-250818T1200Z/
Harbor Beach to Port Sanilac MI-Port Sanilac to Port Huron MI-
405 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM THIS
MORNING...

* WHAT...Expect sustained winds up to 18 knots from the northeast
  with gusts up to 25 knots. The largest significant waves will
  be 5 feet with a potential maximum wave height of 7 feet.

* WHERE...Harbor Beach to Port Sanilac MI and Port Sanilac to
  Port Huron MI.

* WHEN...The maximum winds and waves are expected this morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$