907
FZUS63 KDTX 210135
GLFLH

Open Lake Forecast for Lake Huron
National Weather Service Detroit/Pontiac MI
935 PM EDT Mon Jul 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...A cold front tracks across the Great Lakes late
tonight, with potential for strong to severe thunderstorms in its
wake. A second cold front then sweeps across the area Tuesday
evening, bringing a brief period of gusts to gale force. High
pressure fills in mid-week for a drier pattern to end the work
week.

LHZ361-210945-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
935 PM EDT Mon Jul 20 2026

...SEVERE THUNDERSTORM WATCH 505 IN EFFECT UNTIL 2 AM EDT
TUESDAY...

.REST OF TONIGHT...South winds 10 to 15 knots increasing to 15 to
20 knots after midnight. Showers and a chance of thunderstorms.
Some thunderstorms may be severe with damaging winds and large
hail this evening. Some thunderstorms may produce damaging winds
and large hail after midnight. Waves 4 to 6 feet. Waves
occasionally around 8 feet.
.TUESDAY...Southwest winds 15 to 20 knots becoming west 20 to
25 knots with gusts to around 30 knots in the afternoon. Waves
4 to 6 feet building to 6 to 9 feet late in the afternoon. Waves
occasionally around 12 feet.
.TUESDAY NIGHT...Northwest winds to 30 knots with gusts to
35 knot gales. Waves 8 to 12 feet. Waves occasionally around
15 feet.
.WEDNESDAY...Northwest winds to 30 knots decreasing to 20 to
25 knots in the late morning and afternoon. Gusts to 35 knot
gales. Waves 6 to 9 feet. Waves occasionally around 12 feet.
.WEDNESDAY NIGHT...Northwest winds 15 to 20 knots with gusts to
around 30 knots decreasing to 10 to 15 knots in the late evening
and overnight. Waves 4 to 6 feet. Waves occasionally around
8 feet.
.THURSDAY...West winds 10 to 15 knots becoming southwest 5 to
10 knots late in the afternoon. Waves 1 to 3 feet.
.FRIDAY...Southwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and early afternoon...then backing
to the south . Waves 1 to 3 feet.
.SATURDAY...Southwest winds 5 to 10 knots backing to the south .
A chance of showers by midnight. Waves 1 to 3 feet.


$$

LHZ362-363-210945-
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-
935 PM EDT Mon Jul 20 2026

.REST OF TONIGHT...South winds 15 to 20 knots with gusts to
around 30 knots. Patchy smoke this evening. A chance of showers
and thunderstorms. Waves 5 to 7 feet. Waves occasionally around
10 feet.
.TUESDAY...Southwest winds 15 to 20 knots decreasing to 10 to
15 knots in the late morning and early afternoon...then becoming
west 15 to 20 knots with gusts to around 30 knots late in the
afternoon. A chance of showers. Waves 6 to 9 feet. Waves
occasionally around 12 feet.
.TUESDAY NIGHT...Northwest winds to 30 knots decreasing to 20 to
25 knots after midnight. Gusts to 35 knot gales. Waves 10 to
14 feet. Waves occasionally around 18 feet.
.WEDNESDAY...Northwest winds 20 to 25 knots with gusts to around
30 knots. Waves 8 to 12 feet. Waves occasionally around 15 feet.
.WEDNESDAY NIGHT...Northwest winds 20 to 25 knots with gusts to
around 30 knots decreasing to 10 to 15 knots. Waves 5 to 7 feet.
Waves occasionally around 10 feet.
.THURSDAY...West winds 10 to 15 knots decreasing to 5 to 10 knots
late in the morning...then backing to the south late in the
afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.FRIDAY...Southwest winds 5 to 10 knots becoming south 10 to
15 knots early in the evening...then decreasing to 5 to 10 knots
by midnight. Waves 1 to 3 feet.
.SATURDAY...Southwest winds 5 to 10 knots becoming south 10 to
15 knots . Waves 1 to 3 feet building to 2 to 4 feet .


$$

LHZ462>464-210945-
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-
935 PM EDT Mon Jul 20 2026

.REST OF TONIGHT...South winds 15 to 20 knots. Gusts to 30 knots
early in the morning. Patchy smoke. A chance of showers and
thunderstorms after midnight. Waves 4 to 6 feet. Waves
occasionally around 8 feet.
.TUESDAY...Southwest winds 15 to 20 knots with gusts to around
30 knots decreasing to 10 to 15 knots in the afternoon. A chance
of showers and thunderstorms. Waves 3 to 5 feet.
.TUESDAY NIGHT...Northwest winds 15 to 20 knots increasing to
20 to 25 knots with gusts to around 30 knots in the late evening
and overnight. A chance of thunderstorms in the evening. Waves
8 to 12 feet. Waves occasionally around 15 feet.
.WEDNESDAY...Northwest winds 20 to 25 knots decreasing to 15 to
20 knots early in the afternoon. Gusts to 30 knots. Waves 8 to
12 feet. Waves occasionally around 15 feet.
.WEDNESDAY NIGHT...North winds 15 to 20 knots becoming northwest
10 to 15 knots in the late evening and overnight. Waves 5 to
7 feet. Waves occasionally around 10 feet.
.THURSDAY...West winds 5 to 10 knots backing to the south late in
the afternoon. Waves 2 to 4 feet subsiding to 2 feet or less.
.FRIDAY...Southwest winds 5 to 10 knots backing to the southeast
. Waves 2 feet or less.
.SATURDAY...South winds 5 to 10 knots backing to the southeast
early in the evening...then becoming south 10 to 15 knots by
midnight. Waves 2 feet or less.


$$

LHZ461-210945-
MAFOR 2103/
HURON NORTH 12426 11520 11510 11620 11630 12740 19750. A
chance of thunderstorms overnight. Waves 4 to 6 feet. Occasional
wave height around 8 feet overnight. Waves 3 to 5 feet building
to 5 to 7 feet. Occasional wave height around 10 feet Tuesday.
Waves 8 to 12 feet. Occasional wave height around 15 feet Tuesday
evening.

HURON SOUTH 11420 11426 12520 11610 11616 12730. A chance of
thunderstorms overnight and Tuesday. Waves 3 to 5 feet overnight.
Waves 3 to 5 feet subsiding to 1 to 3 feet Tuesday. Waves 6 to 9
feet. Occasional wave height around 12 feet Tuesday evening.

$$

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)