NZUS99 KDTX 182106
GLFLHT
Experimental Tabular Open Lake Forecast for Lake Huron
National Weather Service Detroit/Pontiac MI
506 PM EDT Mon May 18 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...Strong to severe thunderstorms are likely this afternoon-evening and
again possible Tuesday as a cold front sweeps across the region.
High pressure, 30.50 inches, then builds in mid-week.
LHZ361-190200-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
506 PM EDT Mon May 18 2026
...SEVERE THUNDERSTORM WATCH 221 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
.Tonight...
Weather.............Mostly cloudy with chance of showers and slight
chance of thunderstorms.
Sfc winds...........Southeast 10 to 15 knots.
100-ft winds........Southeast 15 to 20 knots.
Sig waves...........3 to 5 feet subsiding to 2 to 4 feet after
midnight.
Ocnl waves..........Around 5 feet in the evening.
.TUESDAY...
Weather.............Partly sunny with chance of showers and slight
chance of thunderstorms.
Sfc winds...........South 20 to 25 knots.
100-ft winds........South to 30 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.
.TUESDAY NIGHT...
Weather.............Mostly cloudy with chance of showers, then
mostly cloudy after midnight.
Sfc winds...........West to 30 knots.
100-ft winds........West gales to 35 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 11 feet.
.WEDNESDAY...
Weather.............Mostly sunny.
Sfc winds...........Northwest to 30 knots decreasing to 15 to 20
knots in the afternoon.
100-ft winds........Northwest gales to 35 knots decreasing to 20 to
25 knots in the afternoon.
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...........3 to 5 feet subsiding to 2 to 4 feet after
midnight.
Ocnl waves..........Around 6 feet subsiding to around 5 feet after
midnight.
.FORECAST DAYS 3 THROUGH 5...
.THURSDAY...North winds 5 to 10 knots. Waves 3 to 5 feet.
.FRIDAY...Chance of showers after midnight. Northeast winds 15 to
20 knots. Waves 4 to 6 feet.
.SATURDAY...Chance of showers. East winds 15 to 20 knots. Waves
6 to 9 feet.
$$
LHZ362-363-190200-
Lake Huron from Presque Isle Light to Sturgeon Point MI beyond
5NM off shore-
Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off
shore-
506 PM EDT Mon May 18 2026
...SEVERE THUNDERSTORM WATCH 221 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
.Tonight...
Weather.............Mostly cloudy with chance of showers and
thunderstorms, then mostly cloudy with chance
of showers and slight chance of thunderstorms
after midnight.
Sfc winds...........South 15 to 20 knots.
100-ft winds........South 20 to 25 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.
.TUESDAY...
Weather.............Partly sunny with chance of showers and slight
chance of thunderstorms.
Sfc winds...........South 20 to 25 knots.
100-ft winds........South to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 10 feet.
.TUESDAY NIGHT...
Weather.............Mostly cloudy with chance of showers, then
mostly cloudy after midnight.
Sfc winds...........Southwest 20 to 25 knots becoming northwest
after midnight.
100-ft winds........Southwest to 30 knots becoming northwest after
midnight.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 13 feet.
.WEDNESDAY...
Weather.............Mostly sunny.
Sfc winds...........Northwest 20 to 25 knots.
100-ft winds........Northwest to 30 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 13 feet.
.WEDNESDAY NIGHT...
Weather.............Mostly clear.
Sfc winds...........North 20 to 25 knots decreasing to 10 to 15
knots after midnight.
100-ft winds........North to 30 knots decreasing to 15 to 20 knots
after midnight.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.
.FORECAST DAYS 3 THROUGH 5...
.THURSDAY...North winds 5 to 10 knots. Waves 3 to 5 feet.
.FRIDAY...Chance of showers after midnight. Northeast winds 15 to
20 knots. Waves 4 to 6 feet.
.SATURDAY...Chance of showers. East winds 15 to 20 knots. Waves
6 to 9 feet.
$$
LHZ462>464-190200-
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 Mon May 18 2026
...SEVERE THUNDERSTORM WATCH 221 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
.Tonight...
Weather.............Mostly cloudy with showers likely with a chance
of thunderstorms, then mostly cloudy with
chance of showers and slight chance of
thunderstorms after midnight.
Sfc winds...........South 15 to 20 knots.
100-ft winds........South 20 to 25 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.
.TUESDAY...
Weather.............Partly sunny with chance of showers and slight
chance of thunderstorms, then partly sunny with
chance of showers and thunderstorms in the
afternoon.
Sfc winds...........South 20 to 25 knots.
100-ft winds........South to 30 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.
.TUESDAY NIGHT...
Weather.............Mostly cloudy with chance of showers and
thunderstorms, then mostly cloudy with chance
of showers after midnight.
Sfc winds...........Southwest 15 to 20 knots becoming north after
midnight.
100-ft winds........Southwest 20 to 25 knots becoming north after
midnight.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.
.WEDNESDAY...
Weather.............Mostly sunny.
Sfc winds...........North 15 to 20 knots.
100-ft winds........North 20 to 25 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.
.WEDNESDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........North 15 to 20 knots.
100-ft winds........North 20 to 25 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.
.FORECAST DAYS 3 THROUGH 5...
.THURSDAY...North winds 5 to 10 knots. Waves 3 to 5 feet.
.FRIDAY...Chance of showers after midnight. Northeast winds 15 to
20 knots. Waves 4 to 6 feet.
.SATURDAY...Chance of showers. East winds 15 to 20 knots. Waves
6 to 9 feet.
$$
LHZ461-190200-
MAFOR 1821/
HURON NORTH...Severe Thunderstorm Watch in effect...12416 13410
12420 11520. A chance of thunderstorms tonight. Waves 3 to 5
feet tonight. Waves 3 to 5 feet building to 5 to 7 feet.
Occasional wave height around 10 feet Tuesday.
HURON SOUTH...Severe Thunderstorm Watch in effect...11516 11416
13410 12420 11520. A chance of thunderstorms this evening.
Waves 2 to 4 feet tonight. Waves 3 to 5 feet Tuesday.
$$
Occasional waves will only be displayed when values meet or exceed 5 feet.
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