635
FZUS63 KMKX 281458
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
858 AM CST Fri Nov 28 2025

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON Lake Michigan.

Waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.SYNOPSIS...

Winds will gradually diminish becoming light and variable today
as high pressure around 30.5 inches begins to move across the
area. Then the high will track over the lake tonight.

Low pressure around 29.8 inches will then track from eastern
Kansas Saturday morning to the southern tip of Lake Michigan
Saturday night, and then reach Lake Huron by mid Sunday while
deepening to around 29.7 inches. Widespread, moderate to heavy
snow will overspread the south half of Lake Michigan. Brisk
southeast winds Saturday will become easterly and then westerly as
the low crosses the Great Lakes region. A period of west gales
will be possible as the low departs the region on Sunday.

LMZ261-362-364-366-563-565-567-868-282230-
Lake Michigan from Seul Choix Point to Rock Island Passage 5 NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and north of a line from Charlevoix MI to South
Fox Island 5 NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5 NM offshore to
Mid Lake-
Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5 NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5 NM offshore to
Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5 NM offshore to Mid
Lake-
858 AM CST Fri Nov 28 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Northwest winds to 30 kt diminishing to 15 to
25 kt. Chance of snow and slight chance of light freezing rain.
Waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to 6 ft
occasionally to 8 ft.
.TONIGHT...Northwest winds 10 to 20 kt becoming west 5 to 10 kt.
Waves 3 to 5 ft subsiding to 1 to 3 ft.
.SATURDAY...West winds 5 to 10 kt becoming south 10 to 20 kt late
in the morning, then becoming southeast 15 to 25 kt in the
afternoon. Chance of snow in the morning, then snow in the
afternoon. Waves 1 to 2 ft building to 5 to 8 ft occasionally to
10 ft.
.SATURDAY NIGHT...Southeast winds to 30 kt becoming east 15 to
25 kt. Snow. Waves 7 to 10 ft occasionally to 13 ft.
.SUNDAY...North winds to 30 kt becoming northwest gales to 35 kt.
Snow in the morning, then chance of snow in the afternoon. Waves
6 to 9 ft occasionally to 12 ft building to 8 to 11 ft
occasionally to 14 ft.
.SUNDAY NIGHT...Northwest winds to 30 kt diminishing to 15 to
25 kt. Chance of snow. Waves 7 to 10 ft occasionally to 13 ft
subsiding to 4 to 6 ft occasionally to 8 ft.
.MONDAY...West winds 10 to 20 kt becoming southwest 15 to 25 kt.
Waves 2 to 4 ft building to 3 to 5 ft.
.TUESDAY...West winds 10 to 20 kt becoming southwest 15 to 25 kt.
Waves 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-282230-
Lake Michigan from Michigan City IN to St. Joseph MI 5 NM
offshore to Mid Lake-
Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5 NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5 NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM
offshore to Mid Lake-
Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid
Lake-
Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to
Mid Lake-
858 AM CST Fri Nov 28 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Northwest winds to 30 kt diminishing to 10 to
20 kt. Waves 8 to 11 ft occasionally to 14 ft subsiding to 6 to
9 ft occasionally to 12 ft.
.TONIGHT...Northwest winds 10 to 15 kt becoming southwest. Chance
of snow overnight. Waves 4 to 6 ft occasionally to 8 ft subsiding
to 1 to 2 ft.
.SATURDAY...South winds 10 to 20 kt becoming southeast to 30 kt.
Snow. Waves 1 to 3 ft building to 7 to 10 ft occasionally to
13 ft.
.SATURDAY NIGHT...Southeast winds to 30 kt becoming east 15 to
25 kt. Snow in the evening, then rain and snow overnight. Waves
8 to 11 ft occasionally to 14 ft subsiding to 6 to 9 ft
occasionally to 12 ft.
.SUNDAY...Northwest gales to 35 kt. Snow in the morning, then
chance of snow in the afternoon. Waves 8 to 12 ft occasionally to
16 ft building to 12 to 16 ft occasionally to 21 ft.
.SUNDAY NIGHT...Northwest winds to 30 kt diminishing to 10 to
20 kt. Chance of snow. Waves 10 to 14 ft occasionally to 18 ft
subsiding to 6 to 9 ft occasionally to 12 ft.
.MONDAY...West winds 10 to 15 kt becoming southwest 10 to 20 kt.
Chance of snow. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.TUESDAY...West winds 10 to 20 kt. Waves 3 to 5 ft.

$$

LMZ761-282230-
MAFOR 2817/
MICHIGAN NORTH 13730 11720 11710 12600 11410. A chance of snow
this afternoon and Saturday morning. Waves 4 to 7 feet subsiding
to 3 to 5 feet this afternoon. Waves 2 to 4 feet subsiding to 1
to 3 feet tonight. Waves 1 foot or less Saturday morning.

MICHIGAN SOUTH 11730 11720 11710 11700 11600 11500 11417 11427.
Waves 5 to 9 feet subsiding to 4 to 7 feet this afternoon. Waves
3 to 5 feet subsiding to 1 to 3 feet tonight. Waves 1 to 3 feet
building to 2 to 4 feet Saturday morning.

$$


Wagner

Experimental modernized open lake forecast is available online at
weather.gov/mkx/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes