746
FZUS63 KDTX 210759
GLFLH

Open Lake Forecast for Lake Huron
National Weather Service Detroit/Pontiac MI
359 AM EDT Thu Aug 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, drifts over the central
Great Lakes Friday. A cold front then brings showers and a few
thunderstorms to the region this weekend. A cooler airmass
settles over the Great Lakes late weekend into next week bringing
lake effect showers and waterspout chances.

LHZ361-211600-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
359 AM EDT Thu Aug 21 2025

.TODAY...Light and variable winds. Waves 2 feet or less.
.TONIGHT...Light and variable winds. Waves 2 feet or less.
.FRIDAY...Southwest winds 5 to 10 knots until late afternoon
becoming light and variable. Waves 2 feet or less.
.FRIDAY NIGHT...Light and variable winds becoming south 5 to
10 knots in the late evening and overnight. A chance of showers
in the evening...then a chance of showers and thunderstorms after
midnight. Waves 2 feet or less.
.SATURDAY...Southwest winds 10 to 15 knots veering to the west
late in the afternoon. A chance of waterspouts. A chance of
thunderstorms. A chance of showers. Waves 1 to 3 feet building to
2 to 4 feet late in the afternoon.
.SUNDAY...West winds 10 to 15 knots increasing to 15 to 20 knots
with gusts to around 30 knots. A chance of showers. Waves 3 to
5 feet.
.MONDAY...Northwest winds 15 to 20 knots with gusts to 35 knot
gales increasing to 20 to 25 knots with gusts to 40 knot gales
early in the evening...then decreasing to 15 to 20 knots with
gusts to 35 knot gales in the late evening and early morning. A
chance of showers. Waves 5 to 7 feet. Waves occasionally around
10 feet.


$$

LHZ362-363-211600-
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-
359 AM EDT Thu Aug 21 2025

.TODAY...North winds 5 to 10 knots in the morning becoming light
and variable. Waves 2 feet or less.
.TONIGHT...Light and variable winds. Waves 2 feet or less.
.FRIDAY...Light and variable winds becoming south 5 to 10 knots
in the late morning and afternoon. Waves 2 feet or less.
.FRIDAY NIGHT...South winds 5 to 10 knots increasing to 10 to
15 knots in the late evening and early morning...then becoming
southwest 5 to 10 knots after midnight. Waves 1 to 3 feet.
.SATURDAY...Southwest winds 10 to 15 knots veering to the west
late in the evening. A chance of showers in the morning. Rain
showers likely late in the morning. A chance of thunderstorms
late in the afternoon. A chance of waterspouts late in the
morning. Waves 2 to 4 feet.
.SUNDAY...West winds 10 to 15 knots increasing to 15 to 20 knots
in the late evening and early morning. A chance of showers. Waves
3 to 5 feet.
.MONDAY...West winds 15 to 20 knots with gusts to around 30 knots
becoming northwest 20 to 25 knots with gusts to around 30 knots
until early morning. A chance of showers. Waves 5 to 7 feet
building to 8 to 12 feet until early morning. Waves occasionally
around 15 feet.


$$

LHZ462>464-211600-
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-
359 AM EDT Thu Aug 21 2025

.TODAY...Northeast winds 5 to 10 knots increasing to 10 to
15 knots late in the morning...then decreasing to 5 to 10 knots
early in the afternoon becoming northeast 5 to 10 knots late in
the afternoon. Waves 1 to 3 feet.
.TONIGHT...North winds 10 to 15 knots becoming northeast 5 to
10 knots in the late evening and early morning...then becoming
light and variable early in the morning. Waves 2 to 4 feet
subsiding to 1 to 3 feet after midnight.
.FRIDAY...Light and variable winds. Waves 2 feet or less.
.FRIDAY NIGHT...South winds 5 to 10 knots increasing to 10 to
15 knots after midnight. Waves 2 feet or less.
.SATURDAY...Southwest winds 10 to 15 knots veering to the west
late in the evening. A chance of waterspouts. A chance of
showers. A chance of thunderstorms late in the afternoon. Waves
1 to 3 feet.
.SUNDAY...West winds 10 to 15 knots. A chance of showers until
early morning. Waves 2 to 4 feet.
.MONDAY...West winds 15 to 20 knots. Gusts to 30 knots. A chance
of showers. Waves 5 to 7 feet building to 6 to 9 feet until early
morning. Waves occasionally around 12 feet.


$$

LHZ461-211600-
MAFOR 2109/
HURON NORTH 11100 12200 11300 11500 13600. Waves nearly calm.

HURON SOUTH 14100 11810 12100 11200. Waves 2 feet or less.

$$

MV

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)