720
FZUS63 KDTX 211942
GLFLH

Open Lake Forecast for Lake Huron
National Weather Service Detroit/Pontiac MI
342 PM EDT Mon Jul 21 2025

For waters beyond five nautical miles off shore on Lake Huron

Waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. Occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.SYNOPSIS...High pressure, 30.20 inches, holds across the area
through Tuesday. A weak frontal system then tracks into the
northern Great Lakes mid- week and brings the potential for more
unsettled conditions.

LHZ361-220345-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
342 PM EDT Mon Jul 21 2025

.TONIGHT...Light and variable winds becoming south 5 to 10 knots
after midnight. Waves 2 feet or less.
.TUESDAY...Southeast winds 5 to 10 knots increasing to 10 to
15 knots late in the afternoon. Waves 1 to 3 feet.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots. A chance of
showers after midnight. Waves 1 to 3 feet.
.WEDNESDAY...South winds 10 to 15 knots decreasing to 5 to
10 knots early in the afternoon. A chance of showers and
thunderstorms. Waves 1 to 3 feet building to 2 to 4 feet in the
late morning and afternoon.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. A chance of
showers. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late
evening and overnight.
.THURSDAY...Southwest winds 5 to 10 knots veering to the west
late in the afternoon. A chance of showers in the morning...then
a chance of showers and thunderstorms. Waves 2 feet or less.
.FRIDAY...Northwest winds 5 to 10 knots early in the morning
becoming light and variable. A chance of showers early in the
morning. Waves 2 feet or less.
.SATURDAY...Light and variable winds. Waves 2 feet or less.


$$

LHZ362-363-220345-
Lake Huron from Presque Isle Light to Sturgeon Point MI beyond
5NM off shore-
Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off
shore-
342 PM EDT Mon Jul 21 2025

.TONIGHT...Light and variable winds. Waves 2 feet or less.
.TUESDAY...Southeast winds 5 to 10 knots. Waves 2 feet or less.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots becoming south
10 to 15 knots in the late evening and overnight. Waves 1 to
3 feet.
.WEDNESDAY...South winds 10 to 15 knots increasing to 15 to
20 knots in the late morning and afternoon. A chance of showers.
Waves 3 to 5 feet.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. A chance of
showers. Waves 3 to 5 feet.
.THURSDAY...Southwest winds 10 to 15 knots becoming west 5 to
10 knots late in the afternoon. A chance of showers. A chance of
thunderstorms late in the afternoon. Rain showers likely late in
the evening. Waves 2 to 4 feet subsiding to 1 to 3 feet late in
the afternoon.
.FRIDAY...West winds 5 to 10 knots early in the morning becoming
light and variable. Showers likely early in the morning. Waves
2 feet or less.
.SATURDAY...Light and variable winds becoming east 5 to 10 knots
in the late morning and early afternoon...then becoming light and
variable until early morning. Waves 2 feet or less.


$$

LHZ462>464-220345-
Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore-
Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore-
Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore-
342 PM EDT Mon Jul 21 2025

.TONIGHT...Northeast winds 5 to 10 knots veering to the east
early in the morning. Waves 1 to 3 feet.
.TUESDAY...East winds 5 to 10 knots. Waves 2 feet or less.
.TUESDAY NIGHT...East winds 5 to 10 knots veering to the
southeast in the late evening and early morning...then becoming
south 10 to 15 knots after midnight. Waves 2 feet or less.
.WEDNESDAY...South winds 10 to 15 knots. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. Waves 2 to 4 feet.
.THURSDAY...Southwest winds 10 to 15 knots becoming west 5 to
10 knots late in the evening. A chance of showers late in the
afternoon. A chance of thunderstorms late in the afternoon. Rain
showers likely late in the evening. Waves 1 to 3 feet.
.FRIDAY...West winds 5 to 10 knots veering to the north until
early morning. A chance of showers. Waves 2 feet or less.
.SATURDAY...North winds 5 to 10 knots veering to the east. Waves
2 feet or less.


$$

LHZ461-220345-
MAFOR 2121/
HURON NORTH 12500 13400 13300. Waves 2 feet or less.

HURON SOUTH 13100 12200 13300. Waves 2 feet or less.

$$

KDK

Experimental modernized open lake forecast is available online at
weather.gov/dtx/glftable (all lower case)

Graphical marine forecasts are available online at
weather.gov/greatlakes (all lower case)