328
FZUS63 KMKX 162015
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
215 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...

Winds will ease tonight as high pressure slides eastward across
the Upper Midwest into tomorrow morning. An area of low pressure
around 29.8 inches pushes in from the Plains across IL for Tuesday
and will bring east-southeast winds, with the strongest winds
over the southern half of the Lake. Lighter winds are then
expected into midweek as another high treks across the Upper 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-
215 PM CST Sun Nov 16 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...Northwest winds to 30 kt diminishing to 15 to 25 kt.
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 10 to
15 kt late in the evening, then diminishing to 5 to 10 kt after
midnight becoming northeast late. 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.
.WEDNESDAY NIGHT...South winds 5 to 10 kt becoming southwest.
Waves 1 ft or less.
.THURSDAY...Southwest winds 10 to 15 kt becoming south 10 to
20 kt. Waves 1 to 2 ft building to 1 to 3 ft.
.FRIDAY...Northwest winds 15 to 25 kt becoming north. Chance of
rain. Waves 4 to 6 ft occasionally to 8 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-
215 PM CST Sun Nov 16 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.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 2 to 4 ft.
.MONDAY NIGHT...North winds 5 to 10 kt veering to east late in
the evening, then becoming southeast 10 to 15 kt after midnight
increasing to 10 to 20 kt late. 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.
.WEDNESDAY NIGHT...South winds 5 to 10 kt becoming southwest.
Waves 1 to 2 ft.
.THURSDAY...Southeast winds 10 to 15 kt becoming south. Rain
likely. Waves 1 to 2 ft building to 2 to 4 ft.
.FRIDAY...Northwest winds 15 to 25 kt becoming north to 30 kt.
Chance of rain. Waves 6 to 9 ft occasionally to 12 ft.

$$

LMZ761-170415-
MAFOR 1623/
MICHIGAN NORTH 12740 14730 12720. Waves 4 to 7 feet subsiding to
3 to 6 feet tonight. Waves 3 to 5 feet subsiding to 1 to 3 feet
Monday.

MICHIGAN SOUTH 13730 12720 13710. Waves 5 to 8 feet tonight.
Waves 3 to 6 feet subsiding to 1 to 3 feet Monday.

$$


Boxell

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

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