829
WHUS73 KDTX 201956
MWWDTX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
356 PM EDT Mon Jul 20 2026

LHZ421-210815-
/O.EXT.KDTX.SC.Y.0046.000000T0000Z-260723T0200Z/
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
356 PM EDT Mon Jul 20 2026

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 PM EDT WEDNESDAY...

* WHAT...Expect sustained winds up to 26 knots from the west
  with gusts up to 33 knots. The largest significant waves will
  be 6 feet with a potential maximum wave height of 8 feet.

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

* WHEN...The maximum winds are expected around 8 PM EDT Tuesday
  with the largest waves expected around 8 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.

&&

$$

LHZ422-210815-
/O.CON.KDTX.SC.Y.0046.000000T0000Z-260722T2000Z/
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
356 PM EDT Mon Jul 20 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EDT
WEDNESDAY...

* WHAT...Expect sustained winds up to 27 knots from the west
  with gusts up to 32 knots. The largest significant waves will
  be 4 feet with a potential maximum wave height of 5 feet.

* WHERE...Inner Saginaw Bay SW of Point Au Gres to Bay Port MI.

* WHEN...The maximum winds are expected around 7 PM EDT Tuesday
  with the largest waves expected around 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.

&&

$$

LHZ441>443-210815-
/O.CON.KDTX.SC.Y.0046.260721T0800Z-260723T0200Z/
Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI-
Port Sanilac to Port Huron MI-
356 PM EDT Mon Jul 20 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM TUESDAY TO
10 PM EDT WEDNESDAY...

* WHAT...Expect sustained winds up to 23 knots from the
  northwest with gusts up to 31 knots. The largest significant
  waves will be 8 feet with a potential maximum wave height of
  11 feet.

* WHERE...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 Tuesday
  with the largest waves expected around 8 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.

&&

$$

LCZ460-LEZ444-210815-
/O.CON.KDTX.SC.Y.0046.260721T0800Z-260722T0200Z/
Lake St Clair-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
356 PM EDT Mon Jul 20 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM TO 10 PM EDT
TUESDAY...

* WHAT...Expect sustained winds up to 20 knots from the west
  with gusts up to 27 knots. The largest significant waves will
  be 3 feet with a potential maximum wave height of 4 feet.

* WHERE...In Lake St Clair, Lake St Clair. In Lake Erie,
  Michigan Waters of Lake Erie from Detroit River to North Cape
  MI.

* WHEN...The maximum winds are expected around 4 AM EDT Tuesday
  with the largest waves expected around 8 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.

&&

$$