Great Lakes Forecast
Issued by NWS

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
658
FZUS63 KDTX 171359
GLFLH

Open Lake Forecast for Lake Huron
National Weather Service Detroit/Pontiac MI
959 AM EDT Mon Aug 17 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...High pressure, 30.20 inches, through the early week
period. A cold front then tracks across the Great Lakes mid-week.

LHZ361-172200-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
959 AM EDT Mon Aug 17 2026

.REST OF TODAY...West winds 5 to 10 knots. Waves 2 feet or less.
.TONIGHT...West winds 5 to 10 knots early in the evening becoming
light and variable...then becoming southwest 5 to 10 knots early
in the morning. Waves 2 feet or less.
.TUESDAY...Southwest winds 10 to 15 knots veering to the west
early in the afternoon. A chance of showers and thunderstorms in
the afternoon. Waves 1 to 3 feet.
.TUESDAY NIGHT...Northwest winds 10 to 15 knots decreasing to
5 to 10 knots after midnight. A chance of showers. Waves 1 to
3 feet.
.WEDNESDAY...Northwest winds 5 to 10 knots increasing to 10 to
15 knots late in the morning...then decreasing to 5 to 10 knots
late in the evening. Waves 1 to 3 feet.
.THURSDAY...Northwest winds 5 to 10 knots backing to the west
early in the evening...then veering to the west 5 to 10 knots by
midnight. Waves 2 feet or less.
.FRIDAY...South winds 5 to 10 knots. A chance of showers by
midnight. Waves 2 feet or less.


$$

LHZ362-363-172200-
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-
959 AM EDT Mon Aug 17 2026

.REST OF TODAY...North winds 5 to 10 knots. Waves 2 to 4 feet
subsiding to 1 to 3 feet in the afternoon.
.TONIGHT...Light and variable winds becoming southwest 5 to
10 knots early in the morning. Waves 2 feet or less.
.TUESDAY...Southwest winds 5 to 10 knots increasing to 10 to
15 knots in the late morning and afternoon. A chance of showers
in the afternoon. Waves 1 to 3 feet.
.TUESDAY NIGHT...South winds 5 to 10 knots veering to the west by
midnight...then becoming northwest 10 to 15 knots after midnight.
A chance of showers and thunderstorms in the evening...then a
chance of showers after midnight. Waves 1 to 3 feet.
.WEDNESDAY...Northwest winds 5 to 10 knots. Waves 1 to 3 feet.
.THURSDAY...Northwest winds 5 to 10 knots veering to the east by
midnight. Waves 2 feet or less.
.FRIDAY...South winds 5 to 10 knots increasing to 10 to 15 knots
. Waves 1 to 3 feet.


$$

LHZ462>464-172200-
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-
959 AM EDT Mon Aug 17 2026

.REST OF TODAY...North winds 10 to 15 knots decreasing to 5 to
10 knots late in the afternoon. Waves 2 to 4 feet.
.TONIGHT...North winds 5 to 10 knots early in the evening
becoming light and variable. Waves 2 feet or less.
.TUESDAY...Southwest winds 5 to 10 knots. Waves 2 feet or less.
.TUESDAY NIGHT...South winds 5 to 10 knots becoming west 10 to
15 knots in the late evening and overnight. Showers and a chance
of thunderstorms in the evening...then showers likely after
midnight. Waves 1 to 3 feet.
.WEDNESDAY...Northwest winds 10 to 15 knots becoming north 5 to
10 knots late in the morning...then veering to the northeast late
in the evening. Waves 2 feet or less.
.THURSDAY...North winds 5 to 10 knots veering to the northeast by
midnight. Waves 2 feet or less.
.FRIDAY...Southeast winds 5 to 10 knots becoming south 10 to
15 knots by midnight. Waves 2 feet or less.


$$

LHZ461-172200-
MAFOR 1715/
HURON NORTH 14700 11600 13500. Waves 2 feet or less.

HURON SOUTH 14800 11700 13500. Waves 1 to 3 feet this
afternoon. Waves 2 feet or less tonight and Tuesday morning.

$$

MV

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)