559
WHUS73 KDTX 171236
MWWDTX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
836 AM EDT Thu Jul 17 2025

LHZ422-172000-
/O.EXB.KDTX.SC.Y.0057.250717T1236Z-250717T2000Z/
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
836 AM EDT Thu Jul 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...

* WHAT...Expect sustained winds up to 20 knots from the
  northwest with gusts up to 26 knots. The largest significant
  waves will be 3 feet with a potential maximum wave height of 4
  feet.

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

* WHEN...The maximum winds are expected around 8 AM EDT Thursday
  with the largest waves expected around 9 AM EDT Thursday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LHZ421-441-180230-
/O.EXT.KDTX.SC.Y.0057.250717T1236Z-250718T0400Z/
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-Port Austin to Harbor Beach MI-
836 AM EDT Thu Jul 17 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL MIDNIGHT EDT
TONIGHT...

* WHAT...Expect sustained winds up to 20 knots from the
  northwest with gusts up to 25 knots. The largest significant
  waves will be 4 feet with a potential maximum wave height of 5
  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 are expected around 8 AM EDT Thursday
  with the largest waves expected around 5 PM EDT Thursday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LHZ442-443-180230-
/O.EXT.KDTX.SC.Y.0057.250717T1236Z-250718T0400Z/
Harbor Beach to Port Sanilac MI-Port Sanilac to Port Huron MI-
836 AM EDT Thu Jul 17 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL MIDNIGHT EDT
TONIGHT...

* WHAT...Expect sustained winds up to 18 knots from the
  northwest with gusts up to 25 knots. The largest significant
  waves will be 4 feet with a potential maximum wave height of 5
  feet.

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

* WHEN...The maximum winds are expected around 11 AM EDT
  Thursday with the largest waves expected around 6 PM EDT
  Thursday.

* 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-LEZ444-171600-
/O.CON.KDTX.SC.Y.0057.000000T0000Z-250717T1600Z/
Lake St Clair-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
836 AM EDT Thu Jul 17 2025

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

* WHAT...Expect sustained winds up to 21 knots from the west
  with gusts up to 28 knots. The largest significant waves will
  be 2 feet with a potential maximum wave height of 3 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 8 AM EDT Thursday
  with the largest waves expected around 8 AM EDT Thursday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$