054
FZUS63 KDTX 201940
GLFLH

Open Lake Forecast for Lake Huron
National Weather Service Detroit/Pontiac MI
340 PM EDT Thu Aug 20 2026

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, 30.00 inches, builds into the Great
Lakes today and Friday. The next low pressure system then arrives
Saturday, dragging a cold front across the area and increasing
shower and thunderstorm chances. Post-frontal northwest flow
leads to gusty winds Sunday.

LHZ361>363-210345-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
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-
340 PM EDT Thu Aug 20 2026

.TONIGHT...Light and variable winds becoming east 5 to 10 knots
by midnight...then veering to the southeast early in the morning.
Waves 2 feet or less.
.FRIDAY...South winds 5 to 10 knots becoming southeast 10 to
15 knots in the late morning and afternoon. A chance of showers
in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet in
the afternoon.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. A chance of
showers. A chance of waterspouts after midnight. Waves 3 to
5 feet.
.SATURDAY...South winds 5 to 10 knots. A chance of waterspouts in
the morning. Showers in the morning...then showers and a chance
of thunderstorms in the afternoon. Waves 2 to 4 feet subsiding to
1 to 3 feet in the late morning and afternoon.
.SATURDAY NIGHT...Northwest winds 10 to 15 knots increasing to
15 to 20 knots in the late evening and overnight. A chance of
showers. Waves 4 to 6 feet. Waves occasionally around 8 feet.
.SUNDAY...Northwest winds 20 to 25 knots decreasing to 15 to
20 knots late in the evening. Gusts to 30 knots. A chance of
showers in the morning. A chance of waterspouts in the morning.
Waves 8 to 12 feet. Waves occasionally around 15 feet.
.MONDAY...Northwest winds 15 to 20 knots becoming west 5 to
10 knots. Waves 4 to 6 feet. Waves occasionally around 8 feet.
.TUESDAY...West winds 5 to 10 knots backing to the southwest
until early evening...then becoming south 10 to 15 knots by
midnight. Waves 1 to 3 feet.


$$

LHZ462>464-210345-
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-
340 PM EDT Thu Aug 20 2026

.TONIGHT...Northeast winds 5 to 10 knots veering to the east
after midnight. Waves 2 feet or less.
.FRIDAY...Southeast winds 5 to 10 knots. Waves 2 feet or less.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots increasing to 10 to
15 knots in the late evening and overnight. Waves 1 to 3 feet.
.SATURDAY...South winds 5 to 10 knots. A chance of showers in the
morning...then showers and a chance of thunderstorms in the
afternoon. A chance of waterspouts. Waves 1 to 3 feet.
.SATURDAY NIGHT...West winds 5 to 10 knots becoming northwest
15 to 20 knots in the late evening and overnight. Showers likely
and a chance of thunderstorms in the evening...then showers
likely after midnight. Waves 1 to 3 feet building to 4 to 6 feet
in the late evening and overnight. Waves occasionally around
8 feet.
.SUNDAY...Northwest winds 15 to 20 knots increasing to 20 to
25 knots late in the morning...then decreasing to 15 to 20 knots
late in the evening. Gusts to 30 knots. A chance of waterspouts.
A chance of showers. A chance of thunderstorms late in the
afternoon. Waves 6 to 9 feet. Waves occasionally around 11 feet.
.MONDAY...Northwest winds 15 to 20 knots decreasing to 5 to
10 knots . Waves 4 to 6 feet subsiding to 1 to 3 feet by
midnight. Waves occasionally around 8 feet.
.TUESDAY...West winds 5 to 10 knots backing to the southwest
early in the evening...then becoming south 10 to 15 knots by
midnight. Waves 2 feet or less.


$$

LHZ461-210345-
MAFOR 2021/
HURON NORTH 11300 14400 13410. Waves 2 feet or less tonight.
Waves 1 to 3 feet Friday.

HURON SOUTH 11100 12200 12300 13400. 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)