774
FZUS63 KMKX 290815
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
215 AM CST Sat Nov 29 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 increase from the southeast this morning as low
pressure around 29.8 inches tracks across KS to the south tip of
Lake Michigan into tonight. There will be a brief six hour window
of south to southeasterly gales late this afternoon and early
evening for the southern third of the lake. Winds will weaken
below gales as the low pressure passes the southern tip of Lake
Michigan overnight Saturday. Stronger northwesterly winds will
then develop Sunday into Sunday evening and may reach gale force
as the strengthening low pressure area moves away. Thus a Gale
Watch is in effect for Sunday and Sunday evening for the entire
open lake. High pressure will then build in later Sunday into the
start of next week with light winds.

LMZ261-362-364-366-563-565-567-868-291615-
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-
215 AM CST Sat Nov 29 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

.TODAY...Southwest winds 10 to 15 kt becoming southeast 10 to
20 kt late this morning, then increasing to 15 to 25 kt early
this afternoon increasing to 30 kt late. Chance of snow this
morning, then snow this afternoon. Waves 1 ft or less building to
6 to 9 ft occasionally to 12 ft.
.TONIGHT...Southeast winds to 30 kt diminishing to 15 to 25 kt
late in the evening, then becoming east 10 to 20 kt after
midnight becoming northeast 15 to 25 kt late. 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
5 to 8 ft occasionally to 10 ft building to 8 to 12 ft
occasionally to 16 ft.
.SUNDAY NIGHT...Northwest winds to 30 kt diminishing to 10 to
20 kt overnight. Waves 8 to 11 ft occasionally to 14 ft subsiding
to 4 to 7 ft occasionally to 9 ft.
.MONDAY...West winds 15 to 25 kt becoming southwest to 30 kt.
Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.
.MONDAY NIGHT...West winds to 30 kt diminishing to 15 to 25 kt.
Chance of snow. Waves 4 to 6 ft occasionally to 8 ft.
.TUESDAY...West winds 10 to 20 kt. Waves 1 to 3 ft.
.WEDNESDAY...West winds 15 to 25 kt becoming northwest to 30 kt.
Snow likely. Waves 4 to 7 ft occasionally to 9 ft.

$$

LMZ669-671-673-870-872-874-291615-
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 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-
215 AM CST Sat Nov 29 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH TO WIND POINT WI TO HOLLAND
MI...

...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

.TODAY...South winds 10 to 20 kt becoming southeast 15 to 25 kt
early this afternoon, then increasing to 30 kt late. Snow. Waves
1 to 3 ft building to 7 to 10 ft occasionally to 13 ft.
.TONIGHT...Southeast winds to 30 kt diminishing to 15 to 25 kt
after midnight, then backing to north to 30 kt late. Snow and
slight chance of rain. Waves 8 to 11 ft occasionally to 14 ft
subsiding to 7 to 10 ft occasionally to 13 ft.
.SUNDAY...North gales to 35 kt becoming northwest. Rain with a
chance of snow in the morning, then chance of snow in the
afternoon. Waves 7 to 10 ft occasionally to 13 ft building to
12 to 16 ft occasionally to 21 ft.
.SUNDAY NIGHT...Northwest winds to 30 kt diminishing to 10 to
20 kt overnight. Chance of snow in the evening. Waves 10 to 14 ft
occasionally to 18 ft subsiding to 6 to 9 ft occasionally to
12 ft.
.MONDAY...West winds 10 to 20 kt becoming southwest. Chance of
snow in the afternoon. Waves 3 to 5 ft.
.MONDAY NIGHT...West winds 10 to 20 kt. Chance of snow. Waves
3 to 5 ft.
.TUESDAY...Northwest winds 10 to 20 kt becoming west. Chance of
snow. Waves 2 to 4 ft.
.WEDNESDAY...Southwest winds to 30 kt becoming west. Chance of
snow. Waves 7 to 10 ft occasionally to 13 ft.

$$

LMZ080-675-777-779-876-878-291615-
Lake Michigan from Michigan City IN to St. Joseph MI 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 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-
215 AM CST Sat Nov 29 2025

WIND POINT WI TO HOLLAND MI SOUTH...

...GALE WARNING IN EFFECT FROM THIS AFTERNOON THROUGH THIS
EVENING...
...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

.TODAY...South winds 10 to 20 kt becoming southeast to 30 kt.
Snow. Waves 2 to 4 ft building to 7 to 10 ft occasionally to
13 ft.
.TONIGHT...Southeast gales to 35 kt veering to west to 30 kt.
Snow and slight chance of rain 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 increasing to gales to 40 kt.
Snow and rain in the morning, then chance of snow in the
afternoon. Waves 7 to 10 ft occasionally to 13 ft building to
12 to 16 ft occasionally to 21 ft.
.SUNDAY NIGHT...Northwest winds to 30 kt diminishing to 10 to
20 kt overnight. Chance of snow in the evening. Waves 10 to 14 ft
occasionally to 18 ft subsiding to 6 to 9 ft occasionally to
12 ft.
.MONDAY...Southwest winds 10 to 15 kt increasing to 10 to 20 kt.
Chance of snow in the afternoon. Waves 3 to 5 ft subsiding to
2 to 4 ft.
.MONDAY NIGHT...Southwest winds 10 to 20 kt becoming west. Snow
likely. Waves 3 to 5 ft.
.TUESDAY...Northwest winds 10 to 20 kt becoming west 10 to 15 kt.
Chance of snow. Waves 2 to 4 ft.
.WEDNESDAY...Southwest winds to 30 kt becoming west. Chance of
snow. Waves 6 to 9 ft occasionally to 12 ft.

$$

LMZ761-291615-
MAFOR 2911/
MICHIGAN NORTH 11500 11420 12337 12347 11237 11127. Waves 1 foot
or less building to 5 to 8 feet today. Waves 6 to 9 feet
subsiding to 4 to 7 feet tonight.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...11410 11427 11337 11347
12357 11347 11747. Waves 1 to 3 feet building to 6 to 9 feet
today. Waves 6 to 10 feet subsiding to 5 to 8 feet tonight.

$$


Boxell

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

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