682
FZUS63 KDTX 220138
GLFLH

Open Lake Forecast for Lake Huron
National Weather Service Detroit/Pontiac MI
938 PM 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, 30.10 inches, drifts over the central
Great Lakes through 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.

LHZ361-220945-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
938 PM EDT Thu Aug 21 2025

.REST OF 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. Showers likely after
midnight. Waves 2 feet or less.
.SATURDAY...Southwest winds 10 to 15 knots. A chance of showers.
Waves 1 to 3 feet.
.SATURDAY NIGHT...West winds 10 to 15 knots. Waves 1 to 3 feet.
.SUNDAY...West winds 10 to 15 knots increasing to 15 to 20 knots
with gusts to around 30 knots late in the morning...then
decreasing to 10 to 15 knots late in the evening. A chance of
showers. A chance of thunderstorms late in the morning. Waves
3 to 5 feet.
.MONDAY...West winds 15 to 20 knots becoming northwest 20 to
25 knots with gusts to 40 knot gales until early 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 early in the
morning. Waves 5 to 7 feet building to 6 to 9 feet until early
morning. Waves occasionally around 12 feet.
.TUESDAY...Northwest winds 15 to 20 knots with gusts to around
30 knots decreasing to 10 to 15 knots with gusts to around
30 knots in the late evening and early morning. Waves 4 to
6 feet. Waves occasionally around 8 feet.


$$

LHZ362-363-220945-
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-
938 PM EDT Thu Aug 21 2025

.REST OF 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 overnight. Waves 1 to 3 feet.
.SATURDAY...Southwest winds 10 to 15 knots. Showers likely in the
morning...then showers likely and a chance of thunderstorms in
the afternoon. Waves 2 to 4 feet.
.SATURDAY NIGHT...Southwest winds 10 to 15 knots veering to the
west in the late evening and overnight. Waves 2 to 4 feet.
.SUNDAY...West winds 10 to 15 knots increasing to 15 to 20 knots
late in the evening. A chance of showers. Waves 3 to 5 feet.
.MONDAY...West winds 15 to 20 knots becoming northwest 20 to
25 knots with gusts to 35 knot gales. A chance of showers. Waves
5 to 7 feet building to 8 to 12 feet until early morning. Waves
occasionally around 15 feet.
.TUESDAY...Northwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots with gusts to around
30 knots until early morning. Waves 6 to 9 feet. Waves
occasionally around 12 feet.


$$

LHZ462>464-220945-
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-
938 PM EDT Thu Aug 21 2025

.REST OF TONIGHT...Northeast winds 5 to 10 knots in the late
evening and early morning becoming light and variable. Waves 1 to
3 feet.
.FRIDAY...Light and variable winds. Waves 2 feet or less.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots becoming south
10 to 15 knots after midnight. Waves 2 feet or less.
.SATURDAY...Southwest winds 10 to 15 knots. A chance of showers
in the morning...then showers likely in the afternoon. Waves 1 to
3 feet.
.SATURDAY NIGHT...Southwest winds 10 to 15 knots veering to the
west after midnight. Waves 1 to 3 feet.
.SUNDAY...West winds 10 to 15 knots. A chance of showers late in
the afternoon. Waves 2 to 4 feet.
.MONDAY...West winds 15 to 20 knots. Gusts to 35 knot gales. A
chance of showers. Waves 4 to 6 feet building to 8 to 12 feet
until early morning. Waves occasionally around 15 feet.
.TUESDAY...Northwest winds 15 to 20 knots with gusts to around
30 knots decreasing to 10 to 15 knots in the late evening and
early morning. Waves 6 to 9 feet. Waves occasionally around
12 feet.


$$

LHZ461-220945-
MAFOR 2203/
HURON NORTH 12600 13500 13400. Waves 2 feet or less.

HURON SOUTH 11100 11200 11400 13500 12400. Waves 2 feet or
less.

$$

SC

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)