770
WHUS73 KDTX 302342
MWWDTX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
742 PM EDT Wed Jul 30 2025

LCZ460-311430-
/O.EXB.KDTX.SC.Y.0060.250731T0000Z-250801T0800Z/
Lake St Clair-
742 PM EDT Wed Jul 30 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT FRIDAY...

* WHAT...Expect sustained winds up to 20 knots from the northeast
  with gusts up to 25 knots. The largest significant waves will
  be 2 feet with a potential maximum wave height of 3 feet.

* WHERE...Lake St Clair.

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

&&

$$

LEZ444-311430-
/O.EXT.KDTX.SC.Y.0060.250731T0000Z-250801T0800Z/
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
742 PM EDT Wed Jul 30 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM EDT FRIDAY...

* WHAT...Expect sustained winds up to 20 knots from the northeast
  with gusts up to 30 knots. The largest significant waves will
  be 4 feet with a potential maximum wave height of 5 feet.

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

* WHEN...The maximum winds are expected around 5 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.

&&

$$

LHZ441>443-311430-
/O.EXT.KDTX.SC.Y.0060.250731T0000Z-250801T0800Z/
Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI-
Port Sanilac to Port Huron MI-
742 PM EDT Wed Jul 30 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM EDT FRIDAY...

* WHAT...Expect sustained winds up to 20 knots from the northeast
  with gusts up to 30 knots. The largest significant waves will
  be 6 feet with a potential maximum wave height of 8 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 7 PM EDT Thursday
  with the largest waves expected around 8 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.

&&

$$

LHZ421-422-311430-
/O.EXT.KDTX.SC.Y.0060.250731T0000Z-250801T0200Z/
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-
742 PM EDT Wed Jul 30 2025

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

* WHAT...Expect sustained winds up to 20 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...Outer Saginaw Bay SW of Alabaster to Port Austin MI to
  Inner Saginaw Bay and Inner Saginaw Bay SW of Point Au Gres to
  Bay Port MI.

* WHEN...The maximum winds are expected around 3 PM EDT Thursday
  with the largest waves expected around 1 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.

&&

$$

KGK