527
FZUS63 KMKX 022031
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
231 PM CST Tue Dec 2 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...

A strong cold front will move southeast across Lake Michigan
Wednesday. Gusty southwest winds are expected ahead of this front
tonight into early Wednesday morning, shifting to gusty northwest
winds behind it Wednesday afternoon and night. Winds will remain
just below gales for most the lake, though a brief period of low
end gales is possible Wednesday night over the far northern part
of the lake. Very cold air with this system will result in
periods of freezing spray Wednesday night into Friday.

Lighter winds are expected Thursday, with the influence of strong
high pressure around 30.4 inches over Illinois and Indiana.
Another period of elevated southwest winds will occur Thursday
night into Friday, with some gale force gusts possible over the
northern portions of the lake.

LMZ261-362-364-366-563-565-567-868-030430-
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-
231 PM CST Tue Dec 2 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...Southwest winds to 30 kt. Slight chance of snow this
evening, then snow likely overnight. Waves 4 to 7 ft occasionally
to 9 ft building to 6 to 9 ft occasionally to 12 ft.
.WEDNESDAY...West winds to 30 kt becoming northwest. Chance of
snow in the morning, then slight chance of snow in the afternoon.
Waves 6 to 9 ft occasionally to 12 ft subsiding to 5 to 8 ft
occasionally to 10 ft.
.WEDNESDAY NIGHT...Northwest winds to 30 kt. A few gales to 35
kt. Freezing spray. Chance of snow showers. Waves 7 to 10 ft
occasionally to 13 ft.
.THURSDAY...Northwest winds to 30 kt becoming west. Freezing
spray in the morning. Waves 6 to 9 ft occasionally to 12 ft
subsiding to 3 to 5 ft.
.THURSDAY NIGHT...Southwest gales to 40 kt. Freezing spray.
Chance of snow showers overnight. Waves 8 to 11 ft occasionally to
14 ft building to 10 to 14 ft occasionally to 18 ft.
.FRIDAY...West gales to 40 kt diminishing to 30 kt in the
afternoon. Chance of snow showers in the morning, then chance of
snow in the afternoon. Waves 10 to 14 ft occasionally to 18 ft
subsiding to 7 to 10 ft occasionally to 13 ft.
.FRIDAY NIGHT...West winds 15 to 25 kt. Chance of snow. Waves
5 to 8 ft occasionally to 10 ft subsiding to 4 to 6 ft
occasionally to 8 ft.
.SATURDAY...Northwest winds 15 to 25 kt. Waves 3 to 5 ft.
.SUNDAY...North winds 10 to 20 kt. Chance of snow. Waves 2 to
4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-030430-
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-
231 PM CST Tue Dec 2 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...Southwest winds 15 to 25 kt increasing to 30 kt.
Chance of flurries overnight. Waves 3 to 5 ft building to 6 to
9 ft occasionally to 12 ft.
.WEDNESDAY...Southwest winds to 30 kt becoming northwest. Chance
of snow. Waves 6 to 9 ft occasionally to 12 ft.
.WEDNESDAY NIGHT...Northwest winds to 30 kt. Chance of snow
showers in the evening. Freezing spray overnight. Waves 7 to
10 ft occasionally to 13 ft building to 10 to 14 ft occasionally
to 18 ft.
.THURSDAY...Northwest winds to 30 kt becoming west 10 to 20 kt in
the afternoon. Freezing spray in the morning. Waves 8 to 12 ft
occasionally to 16 ft subsiding to 4 to 7 ft occasionally to
9 ft.
.THURSDAY NIGHT...Southwest winds to 30 kt. Freezing spray
overnight. Waves 6 to 9 ft occasionally to 12 ft building to 10 to
14 ft occasionally to 18 ft.
.FRIDAY...Southwest winds to 30 kt. Chance of snow in the
afternoon. Waves 10 to 14 ft occasionally to 18 ft subsiding to
8 to 12 ft occasionally to 16 ft.
.FRIDAY NIGHT...Southwest winds 15 to 25 kt becoming west. Chance
of snow. Waves 6 to 9 ft occasionally to 12 ft.
.SATURDAY...West winds 10 to 20 kt becoming northwest. Waves 4 to
7 ft occasionally to 9 ft.
.SUNDAY...Northeast winds 10 to 20 kt. Chance of snow. Waves 4 to
6 ft occasionally to 8 ft.

$$

LMZ761-030430-
MAFOR 0223/
MICHIGAN NORTH 13540 11547 11647 11630 12740. Waves 3 to 5 feet
building to 5 to 8 feet tonight. Waves 5 to 9 feet subsiding to 4
to 7 feet Wednesday.

MICHIGAN SOUTH 11520 12530 12540 11640 11630 11730. A chance of
snow Wednesday. Waves 1 to 3 feet building to 6 to 9 feet
tonight. Waves 5 to 9 feet subsiding to 4 to 7 feet Wednesday.

$$
Wood

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

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