822
FZUS63 KMKX 011445
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
845 AM CST Mon Dec 1 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...

Light and variable winds this morning will turn southerly by this
afternoon as high pressure of 30.5 inches moves into the
Northeast United States. Light west to southwest winds are
expected late tonight and Tuesday as another area of high pressure
moves through the Ohio Valley.

A strong cold front will move across the lake Wednesday and
Wednesday night. Gusty winds are expected, though for now, they
are expected to remain just below gale force. Very cold air with
this system will result in a risk for freezing spray Wednesday and
Thursday.

LMZ261-362-364-366-563-565-567-868-012215-
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-
845 AM CST Mon Dec 1 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...West winds 10 to 20 kt becoming southwest 15 to
25 kt. Chance of snow this afternoon. Waves 1 to 3 ft building to
3 to 5 ft.
.TONIGHT...Southwest winds 10 to 20 kt becoming northwest 10 to
15 kt. Snow likely in the evening, then chance of snow overnight.
Waves 3 to 5 ft subsiding to 2 to 4 ft.
.TUESDAY...West winds 10 to 15 kt increasing to 10 to 20 kt late
in the morning, then becoming west 10 to 20 kt early in the
afternoon becoming southwest 15 to 25 kt late. Waves 2 to 4 ft.
.TUESDAY NIGHT...Southwest winds to 30 kt increasing to gales to
35 kt. Chance of snow overnight. Waves 4 to 7 ft occasionally to
9 ft building to 7 to 10 ft occasionally to 13 ft.
.WEDNESDAY...West winds to 30 kt becoming northwest. Snow in the
morning, then snow likely in the afternoon. Waves 8 to 11 ft
occasionally to 14 ft subsiding to 6 to 9 ft occasionally to
12 ft.
.WEDNESDAY NIGHT...Northwest winds to 30 kt. Freezing spray.
Chance of snow. Waves 5 to 8 ft occasionally to 10 ft.
.THURSDAY...Northwest winds to 30 kt becoming west 10 to 20 kt.
Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft.
.FRIDAY...Southwest winds to 30 kt. Chance of snow. Waves 6 to
9 ft occasionally to 12 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-012215-
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-
845 AM CST Mon Dec 1 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Southwest winds 10 to 15 kt increasing to 10 to
20 kt. Chance of snow. Waves 2 to 4 ft.
.TONIGHT...Southwest winds 10 to 20 kt veering to northwest. Snow
in the evening, then chance of snow overnight. Waves 3 to 5 ft.
.TUESDAY...Northwest winds 10 to 20 kt becoming southwest. Chance
of snow. Waves 2 to 4 ft.
.TUESDAY NIGHT...Southwest winds 15 to 25 kt increasing to 30 kt.
Chance of snow. Waves 5 to 8 ft occasionally to 10 ft building to
8 to 12 ft occasionally to 16 ft.
.WEDNESDAY...Southwest winds to 30 kt becoming west. Chance of
snow in the morning, then snow likely in the afternoon. Waves
8 to 12 ft occasionally to 16 ft subsiding to 8 to 11 ft
occasionally to 14 ft.
.WEDNESDAY NIGHT...Northwest winds to 30 kt. Chance of snow.
Waves 7 to 10 ft occasionally to 13 ft.
.THURSDAY...Northwest winds 15 to 25 kt becoming west 10 to
20 kt. Waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to
7 ft occasionally to 9 ft.
.FRIDAY...Southwest winds to 30 kt. Chance of snow. Waves 7 to
10 ft occasionally to 13 ft.

$$

LMZ761-012215-
MAFOR 0117/
MICHIGAN NORTH 12530 11537 11627 11620 13610. Waves 1 to 3 feet
building to 3 to 5 feet this afternoon. Waves 2 to 4 feet
subsiding to 1 to 3 feet tonight. Waves 1 to 3 feet Tuesday
morning.

MICHIGAN SOUTH 12520 13527 11620 12710. Waves 1 to 3 feet
building to 2 to 4 feet, then subsiding to 1 to 3 feet this
afternoon. Waves 2 to 4 feet tonight and Tuesday morning.

$$


DDV

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

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