270
FZUS63 KMKX 170248
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
848 PM CST Sun Nov 16 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 diminish through tonight as
high pressure around 30.1 inch builds through the Upper Midwest
and lingers through Monday. Low pressure around 29.8 inches
progresses from the central Plains through Illinois Monday night
through Tuesday and will bring east-southeast winds. The
strongest winds are expected over the southern half of the open
waters. Light and variable winds are then expected midweek as
high pressure builds back into the Great Lakes region.

LMZ261-362-364-366-563-565-567-868-170415-
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-
848 PM CST Sun Nov 16 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Northwest winds to 30 kt. Chance of snow
showers. Waves 4 to 7 ft occasionally to 9 ft.
.TONIGHT...Northwest winds to 30 kt diminishing to 15 to 25 kt.
Chance of snow. Waves 4 to 7 ft occasionally to 9 ft subsiding to
4 to 6 ft occasionally to 8 ft.
.MONDAY...Northwest winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 3 to 5 ft subsiding to 2 to 4 ft.
.MONDAY NIGHT...Northwest winds 10 to 20 kt becoming north 5 to
10 kt overnight. Waves 1 to 3 ft subsiding to 1 to 2 ft.
.TUESDAY...Northeast winds 10 to 15 kt. Chance of rain and snow
in the morning, then chance of rain in the afternoon. Waves 1 to
3 ft.
.TUESDAY NIGHT...Northeast winds 10 to 15 kt becoming east. Waves
1 to 3 ft.
.WEDNESDAY...South winds 5 to 10 kt increasing to 10 to 15 kt.
Waves 1 to 2 ft.
.THURSDAY...Southwest winds 10 to 15 kt becoming south 10 to
20 kt. Waves 1 to 2 ft building to 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-170415-
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-
848 PM CST Sun Nov 16 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Northwest winds to 30 kt. Waves 5 to 8 ft
occasionally to 10 ft.
.TONIGHT...Northwest winds to 30 kt diminishing to 10 to 20 kt.
Waves 6 to 9 ft occasionally to 12 ft.
.MONDAY...Northwest winds 10 to 20 kt diminishing to 10 to 15 kt.
Waves 4 to 6 ft occasionally to 8 ft subsiding to 1 to 3 ft.
.MONDAY NIGHT...Northeast winds 5 to 10 kt becoming southeast
10 to 20 kt overnight. Chance of rain in the evening, then rain
with a chance of snow overnight. Waves 1 to 3 ft.
.TUESDAY...East winds 10 to 20 kt. Rain with snow likely in the
morning, then rain likely in the afternoon. Waves 4 to 6 ft
occasionally to 8 ft.
.TUESDAY NIGHT...East winds 10 to 20 kt diminishing to 10 to
15 kt. Waves 3 to 5 ft.
.WEDNESDAY...Southeast winds 10 to 15 kt diminishing to 5 to
10 kt. Waves 2 to 4 ft.
.THURSDAY...Southeast winds 10 to 15 kt becoming south. Rain
likely. Waves 1 to 2 ft building to 2 to 4 ft.

$$

LMZ761-170415-
MAFOR 1617/
MICHIGAN NORTH 14740 14730. A chance of snow late this morning
and tonight. Waves 5 to 8 feet this afternoon. Waves 4 to 7 feet
subsiding to 3 to 6 feet tonight. Waves 3 to 5 feet subsiding to
2 to 4 feet Monday morning.

MICHIGAN SOUTH 11740 11730 12740 11730 13720. Waves 6 to 10 feet
this afternoon. Waves 5 to 8 feet tonight. Waves 3 to 6 feet
Monday 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