NZUS99 KDTX 212106
GLFLHT
Experimental Tabular Open Lake Forecast for Lake Huron
National Weather Service Detroit/Pontiac MI
506 PM EDT Tue Jul 21 2026
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...A cold front tracks across the Great Lakes tonight shifting winds to
the northwest and diminishing thunderstorm chances. A brief pop in
wind gusts to gales will be possible along the front. Breezy
northwest flow through mid-week before high pressure fills in for
the rest of the week.
LHZ361-220200-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
506 PM EDT Tue Jul 21 2026
.Tonight...
Weather.............Mostly cloudy.
Sfc winds...........Northwest gales to 35 knots decreasing to 30
knots after midnight.
100-ft winds........Northwest gales to 45 knots decreasing to 35
knots after midnight.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 14 feet.
.WEDNESDAY...
Weather.............Sunny.
Sfc winds...........Northwest to 30 knots.
100-ft winds........Northwest gales to 35 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 11 feet.
.WEDNESDAY NIGHT...
Weather.............Mostly clear.
Sfc winds...........Northwest 15 to 20 knots.
100-ft winds........Northwest 20 to 25 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.
.THURSDAY...
Weather.............Sunny.
Sfc winds...........West 10 to 15 knots.
100-ft winds........West 15 to 20 knots.
Sig waves...........2 to 4 feet.
.THURSDAY NIGHT...
Weather.............Mostly clear.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots.
Sig waves...........2 to 4 feet.
.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...South winds 10 to 15 knots. Waves 2 to 4 feet.
.SATURDAY...Chance of showers. Southeast winds 10 to 15 knots.
Waves 4 to 6 feet.
.SUNDAY...Chance of showers. South winds 10 to 15 knots. Waves
2 to 4 feet.
$$
LHZ362-363-220200-
Lake Huron from Presque Isle Light to Sturgeon Point MI beyond
5NM off shore-
Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off
shore-
506 PM EDT Tue Jul 21 2026
.Tonight...
Weather.............Mostly cloudy with isolated showers, then
mostly cloudy after midnight.
Sfc winds...........Northwest gales to 35 knots decreasing to 30
knots after midnight.
100-ft winds........Northwest gales to 45 knots decreasing to 35
knots after midnight.
Sig waves...........10 to 14 feet.
Ocnl waves..........Around 18 feet.
.WEDNESDAY...
Weather.............Mostly sunny.
Sfc winds...........Northwest to 30 knots.
100-ft winds........Northwest gales to 35 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 14 feet.
.WEDNESDAY NIGHT...
Weather.............Mostly clear.
Sfc winds...........Northwest 15 to 20 knots.
100-ft winds........Northwest 20 to 25 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.
.THURSDAY...
Weather.............Sunny.
Sfc winds...........West 10 to 15 knots becoming southwest 5 to 10
knots in the afternoon.
100-ft winds........West 15 to 20 knots becoming southwest 10 to 15
knots in the afternoon.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet in the morning.
.THURSDAY NIGHT...
Weather.............Mostly clear.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...South winds 10 to 15 knots. Waves 2 to 4 feet.
.SATURDAY...Chance of showers. Southeast winds 10 to 15 knots.
Waves 4 to 6 feet.
.SUNDAY...Chance of showers. South winds 10 to 15 knots. Waves
2 to 4 feet.
$$
LHZ462>464-220200-
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-
506 PM EDT Tue Jul 21 2026
.Tonight...
Weather.............Mostly cloudy with scattered showers and
thunderstorms, then mostly cloudy after
midnight.
Sfc winds...........Northwest to 30 knots.
100-ft winds........Northwest gales to 35 knots.
Sig waves...........10 to 14 feet.
Ocnl waves..........Around 16 feet.
.WEDNESDAY...
Weather.............Mostly sunny with a slight chance of showers,
then sunny in the afternoon.
Sfc winds...........Northwest 20 to 25 knots.
100-ft winds........Northwest to 30 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 13 feet.
.WEDNESDAY NIGHT...
Weather.............Mostly clear.
Sfc winds...........Northwest 10 to 15 knots.
100-ft winds........Northwest 15 to 20 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.
.THURSDAY...
Weather.............Sunny.
Sfc winds...........Northwest 10 to 15 knots.
100-ft winds........Northwest 15 to 20 knots.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet in the morning.
.THURSDAY NIGHT...
Weather.............Mostly clear.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........1 to 3 feet.
.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...South winds 10 to 15 knots. Waves 2 to 4 feet.
.SATURDAY...Chance of showers. Southeast winds 10 to 15 knots.
Waves 4 to 6 feet.
.SUNDAY...Chance of showers. South winds 10 to 15 knots. Waves
2 to 4 feet.
$$
LHZ461-220200-
MAFOR 2121/
HURON NORTH 12740 19750 11730 11740 14730. Waves 6 to 9 feet
building to 8 to 12 feet...THEN subsiding to 6 to 9 feet.
Occasional wave height around 15 feet tonight. Waves 5 to 7 feet.
Occasional wave height around 9 feet Wednesday.
HURON SOUTH 11730 19736 14730 11730 12720. Waves 1 to 3 feet
building to 8 to 12 feet. Occasional wave height around 15 feet
tonight. Waves 6 to 9 feet subsiding to 5 to 7 feet. Occasional
wave height around 12 feet Wednesday.
$$
Occasional waves will only be displayed when values meet or exceed 5 feet.
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