NZUS99 KDTX 201507
GLFLHT
Experimental Tabular Open Lake Forecast for Lake Huron
National Weather Service Detroit/Pontiac MI
1107 AM EDT Mon Jul 20 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...High pressure influence wanes across the central Great Lakes today
with dry initial conditions, then a cold front passes through
tonight into Tuesday. This leads to periods of showers and
thunderstorms. Wet weather could persist on Tuesday before high
pressure from Alberta/Manitoba builds in by Tuesday evening with a
drying effect.
LHZ361-202000-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
1107 AM EDT Mon Jul 20 2026
.This Afternoon...
Weather.............Partly sunny with patchy smoke.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet building to 4 to 6 feet in the
afternoon.
Ocnl waves..........Around 8 feet in the afternoon.
.TONIGHT...
Weather.............Mostly cloudy with chance of showers,
thunderstorms and patchy smoke, then mostly
cloudy with chance of showers and thunderstorms
after midnight.
Sfc winds...........South 15 to 20 knots.
100-ft winds........South 20 to 25 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.
.TUESDAY...
Weather.............Partly sunny with chance of showers, then
partly sunny in the afternoon.
Sfc winds...........Southwest 15 to 20 knots increasing to west to
30 knots in the afternoon.
100-ft winds........Southwest 20 to 25 knots increasing to west
gales to 35 knots in the afternoon.
Sig waves...........4 to 6 feet building to 6 to 9 feet in the
afternoon.
Ocnl waves..........Around 7 feet building to around 12 feet in the
afternoon.
.TUESDAY NIGHT...
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.
.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY...West winds 15 to 20 knots. Waves 8 to 12 feet.
.THURSDAY...West winds 10 to 15 knots. Waves 3 to 5 feet.
.FRIDAY...South winds 5 to 10 knots. Waves 2 to 4 feet.
$$
LHZ362-363-202000-
Lake Huron from Presque Isle Light to Sturgeon Point MI beyond
5NM off shore-
Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off
shore-
1107 AM EDT Mon Jul 20 2026
.This Afternoon...
Weather.............Mostly sunny with patchy smoke.
Sfc winds...........South 15 to 20 knots.
100-ft winds........South 20 to 25 knots.
Sig waves...........2 to 4 feet building to 6 to 9 feet in the
afternoon.
Ocnl waves..........Around 10 feet in the afternoon.
.TONIGHT...
Weather.............Mostly cloudy with chance of thunderstorms with
little or no rain and smoke, then mostly cloudy
with chance of showers, thunderstorms and
patchy smoke after midnight.
Sfc winds...........South 20 to 25 knots.
100-ft winds........South to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.
.TUESDAY...
Weather.............Partly sunny with chance of showers.
Sfc winds...........Southwest 15 to 20 knots.
100-ft winds........Southwest 20 to 25 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.
.TUESDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........West gales to 35 knots becoming northwest to 30
knots after midnight.
100-ft winds........West gales to 45 knots becoming northwest at 35
knots after midnight.
Sig waves...........10 to 14 feet.
Ocnl waves..........Around 17 feet.
.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY...West winds 15 to 20 knots. Waves 8 to 12 feet.
.THURSDAY...West winds 10 to 15 knots. Waves 3 to 5 feet.
.FRIDAY...South winds 5 to 10 knots. Waves 2 to 4 feet.
$$
LHZ462>464-202000-
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-
1107 AM EDT Mon Jul 20 2026
.This Afternoon...
Weather.............Mostly sunny with patchy smoke.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
.TONIGHT...
Weather.............Mostly cloudy with patchy smoke, then mostly
cloudy with chance of thunderstorms with little
or no rain and smoke after midnight.
Sfc winds...........South 20 to 25 knots.
100-ft winds........South to 30 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.
.TUESDAY...
Weather.............Partly sunny with chance of showers and
thunderstorms, then mostly sunny with showers
likely with a chance of thunderstorms in the
afternoon.
Sfc winds...........Southwest 20 to 25 knots.
100-ft winds........Southwest to 30 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.
.TUESDAY NIGHT...
Weather.............Mostly cloudy with chance of showers, then
mostly cloudy after midnight.
Sfc winds...........Northwest to 30 knots.
100-ft winds........Northwest gales to 35 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 15 feet.
.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY...West winds 15 to 20 knots. Waves 8 to 12 feet.
.THURSDAY...West winds 10 to 15 knots. Waves 3 to 5 feet.
.FRIDAY...South winds 5 to 10 knots. Waves 2 to 4 feet.
$$
LHZ461-202000-
MAFOR 2015/
HURON NORTH 11410 13430 12426 11520 11510. A chance of
thunderstorms tonight and Tuesday morning. Waves 2 to 4 feet
building to 4 to 6 feet. Occasional wave height around 8 feet
this afternoon. Waves 5 to 7 feet. Occasional wave height around
10 feet tonight. Waves 5 to 7 feet subsiding to 3 to 5 feet.
Occasional wave height around 10 feet Tuesday morning.
HURON SOUTH 11400 12410 12420 11426 12520. A chance of
thunderstorms overnight. Waves 1 to 3 feet this afternoon. Waves
3 to 5 feet tonight and Tuesday morning.
$$
Occasional waves will only be displayed when values meet or exceed 5 feet.
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