128
FZUS63 KMKX 061456
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
856 AM CST Sat Dec 6 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...

Northwesterly winds will continue to slowly diminish as high
pressure of 30.0 inches builds in from the west today. Winds will
veer to northerly tonight into Sunday and become breezy as weak
low pressure passes by through northern Illinois and strong high
pressure of 30.5 inches begins to build in from the northern
Plains. More rounds of gusty winds with multiple direction shifts are
expected through at least the first half of next week as multiple
low pressure systems move through the region.

LMZ261-362-364-366-563-565-567-868-062215-
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-
856 AM CST Sat Dec 6 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Northwest winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.TONIGHT...Northwest winds 10 to 15 kt becoming north 10 to
20 kt. Chance of snow. Waves 1 to 3 ft.
.SUNDAY...North winds 15 to 25 kt increasing to 30 kt. Chance of
snow in the morning. Waves 3 to 5 ft building to 4 to 7 ft
occasionally to 9 ft.
.SUNDAY NIGHT...North winds 15 to 25 kt diminishing to 10 to
15 kt overnight. Waves 4 to 7 ft occasionally to 9 ft subsiding
to 2 to 4 ft.
.MONDAY...Southwest winds 10 to 20 kt increasing to 30 kt in the
afternoon. Chance of snow. Waves 1 to 3 ft building to 4 to 7 ft
occasionally to 9 ft.
.MONDAY NIGHT...Southwest gales to 40 kt increasing to gales to
45 kt. Chance of snow. Waves 8 to 11 ft occasionally to 14 ft
building to 10 to 14 ft occasionally to 18 ft.
.TUESDAY...West gales to 35 kt diminishing to 15 to 25 kt. Chance
of snow. Waves 8 to 12 ft occasionally to 16 ft subsiding to 6 to
9 ft occasionally to 12 ft.
.WEDNESDAY...North gales to 35 kt. Snow likely. Waves 8 to 11 ft
occasionally to 14 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-062215-
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-
856 AM CST Sat Dec 6 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Northwest winds 10 to 20 kt diminishing to 10 to
15 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft.
.TONIGHT...Northwest winds 5 to 10 kt becoming west late in the
evening, then backing to southeast 10 to 15 kt after midnight
becoming east 10 to 20 kt late. Chance of snow in the evening,
then snow overnight. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.SUNDAY...Northeast winds 10 to 20 kt becoming north 15 to 25 kt
late in the morning, then increasing to 30 kt early in the
afternoon diminishing to 15 to 25 kt late. Chance of snow in the
morning. Waves 3 to 5 ft building to 6 to 9 ft occasionally to
12 ft.
.SUNDAY NIGHT...North winds 15 to 25 kt becoming northeast 10 to
20 kt. Chance of snow in the evening. Waves 6 to 9 ft
occasionally to 12 ft.
.MONDAY...Southeast winds 10 to 20 kt becoming south 15 to 25 kt.
Waves 3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.
.MONDAY NIGHT...Southwest gales to 35 kt increasing to gales to
40 kt. Chance of snow. Waves 8 to 11 ft occasionally to 14 ft
building to 10 to 14 ft occasionally to 18 ft.
.TUESDAY...Southwest gales to 35 kt diminishing to 30 kt. Chance
of snow and rain. Waves 10 to 14 ft occasionally to 18 ft
subsiding to 8 to 12 ft occasionally to 16 ft.
.WEDNESDAY...Northwest gales to 40 kt increasing to gales to
45 kt. Snow and rain likely. Waves 12 to 16 ft occasionally to
21 ft.

$$

LMZ761-062215-
MAFOR 0617/
MICHIGAN NORTH 12720 11710 11810 11800 11817 11820 11830. Waves 2
to 4 feet subsiding to 1 to 3 feet this afternoon. Waves 2 feet
or less tonight. Waves 2 to 4 feet building to 3 to 5 feet Sunday
morning.

MICHIGAN SOUTH 12710 11700 11600 11200 11217 11127 11830. Waves 3
to 5 feet subsiding to 2 to 4 feet this afternoon. Waves 1 to 3
feet tonight. Waves 3 to 6 feet Sunday morning.

$$


MH

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

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