Great Lakes Forecast
Issued by NWS

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388
FZUS63 KDTX 220807 CCA
GLFLH

Open Lake Forecast for Lake Huron...CORRECTED
National Weather Service Detroit/Pontiac MI
407 AM EDT Sat Aug 22 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 will move across the Great Lakes this
morning which will veer wind direction to the northwest. Showers
and thunderstorms are expected along and ahead of the front.
Post-frontal northwest flow leads to gusty winds through the day
on Sunday.

LHZ361-221600-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
407 AM EDT Sat Aug 22 2026

.TODAY...South winds 5 to 10 knots veering to the west late in
the morning...then becoming northwest 10 to 15 knots in the
afternoon. A chance of showers in the morning. A chance of
waterspouts. Waves 1 to 3 feet.
.TONIGHT...Northwest winds 15 to 20 knots. Gusts to 30 knots in
the evening. Waves 3 to 5 feet.
.SUNDAY...Northwest winds 15 to 20 knots increasing to 20 to
25 knots early in the afternoon. Gusts to 30 knots. Waves 5 to 7
feet. Waves occasionally around 10 feet.
.SUNDAY NIGHT...Northwest winds 20 to 25 knots with gusts to
30 knots. A chance of showers. Waves 5 to 7 feet. Waves
occasionally around 10 feet.
.MONDAY...Northwest winds 15 to 20 knots with gusts to around
30 knots decreasing to 5 to 10 knots. Waves 3 to 5 feet.
.TUESDAY...West winds 5 to 10 knots early in the morning becoming
light and variable...then becoming south 5 to 10 knots by
midnight. Waves 2 feet or less.
.WEDNESDAY...South winds 5 to 10 knots. A chance of showers early
in the morning...then showers likely. Waves 1 to 3 feet.


$$

LHZ362-363-221600-
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-
407 AM EDT Sat Aug 22 2026

.TODAY...Southwest winds 5 to 10 knots. A chance of showers in
the morning...then showers likely and a chance of thunderstorms
in the afternoon. A chance of waterspouts. Waves 2 to 4 feet
subsiding to 1 to 3 feet in the late morning and afternoon.
.TONIGHT...Northwest winds 10 to 15 knots increasing to 20 to
25 knots. Waves 4 to 6 feet building to 6 to 9 feet after
midnight. Waves occasionally around 12 feet.
.SUNDAY...Northwest winds 20 to 25 knots with gusts to 35 knot
gales. A chance of waterspouts in the morning. A chance of
showers in the afternoon. Waves 6 to 9 feet. Waves occasionally
around 12 feet.
.SUNDAY NIGHT...Northwest winds 20 to 25 knots with gusts to
30 knots. A chance of waterspouts in the evening. A chance of
showers. Waves 6 to 9 feet. Waves occasionally around 12 feet.
.MONDAY...Northwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots. Waves 4 to 6 feet. Waves
occasionally around 8 feet.
.TUESDAY...Northwest winds 5 to 10 knots early in the morning
becoming light and variable...then becoming south 5 to 10 knots
by midnight. Waves 1 to 3 feet.
.WEDNESDAY...South winds 5 to 10 knots increasing to 10 to
15 knots. Showers likely. A chance of thunderstorms by midnight.
Waves 1 to 3 feet.


$$

LHZ462>464-221600-
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-
407 AM EDT Sat Aug 22 2026

.TODAY...South winds 10 to 15 knots decreasing to 5 to 10 knots
in the late morning and afternoon. A chance of showers in the
morning...then a chance of showers and thunderstorms in the
afternoon. A chance of waterspouts. Waves 1 to 3 feet.
.TONIGHT...Northwest winds 10 to 15 knots increasing to 15 to
20 knots after midnight. Showers and a chance of thunderstorms in
the evening. A chance of waterspouts in the evening. Waves 1 to
3 feet building to 6 to 9 feet. Waves occasionally around
12 feet.
.SUNDAY...Northwest winds 20 to 25 knots with gusts to 35 knot
gales. A chance of showers in the morning...then showers likely
in the afternoon. Waves 6 to 9 feet. Waves occasionally around
12 feet.
.SUNDAY NIGHT...Northwest winds 15 to 20 knots increasing to
20 to 25 knots by midnight...then becoming west 15 to 20 knots
after midnight. Gusts to 30 knots. Showers likely in the
evening...then a chance of showers after midnight. Waves 6 to
9 feet. Waves occasionally around 12 feet.
.MONDAY...Northwest winds 15 to 20 knots with gusts to around
30 knots decreasing to 10 to 15 knots late in the afternoon.
Waves 4 to 6 feet subsiding to 2 to 4 feet late in the evening.
Waves occasionally around 8 feet.
.TUESDAY...Northwest winds 5 to 10 knots early in the morning
becoming light and variable...then becoming south 5 to 10 knots
by midnight. Waves 2 feet or less.
.WEDNESDAY...Southwest winds 5 to 10 knots becoming south 10 to
15 knots . A chance of showers early in the evening. Rain showers
likely by midnight. Waves 1 to 3 feet.


$$

LHZ461-221600-
MAFOR 2209/
HURON NORTH 11400 11500 11606 11700 11710 13720. Waterspouts
likely today. A chance of thunderstorms today. Waves 1 to 3 feet
today. Waves 2 to 4 feet building to 3 to 5 feet tonight.

HURON SOUTH 11410 11506 11500 11606 11706 13720. A chance of
waterspouts this morning. Waterspouts likely this afternoon. A
chance of waterspouts this evening. A chance of thunderstorms
this afternoon and evening. Waves 1 to 3 feet today. Waves 1 to 3
feet building to 3 to 5 feet...THEN building to 5 to 7 feet.
Occasional wave height around 10 feet tonight.

$$

BT

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)