016
FZUS63 KMKX 130846
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
246 AM CST Thu Nov 13 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...

Gusty northwest winds will gradually ease this morning as high
pressure of 30.2 inches moves in from the west. The high will be
centered to the south of Lake Michigan, resulting in the winds
becoming westerly tomorrow. Lighter winds will continue Thursday
night, becoming southerly Friday and increasing Friday night ahead
of an approaching low. Breezy west to northwest winds will then
develop for later Saturday into Sunday behind the low and
associated cold front.

LMZ261-362-364-366-563-565-567-868-131630-
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-
246 AM CST Thu Nov 13 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...Northwest winds 15 to 25 kt becoming west. Waves 4 to
6 ft occasionally to 8 ft subsiding to 3 to 5 ft.
.TONIGHT...West winds 10 to 20 kt becoming northwest 10 to 15 kt
late in the evening, then diminishing to 5 to 10 kt after
midnight veering to northeast late. Waves 2 to 4 ft subsiding to
1 to 2 ft.
.FRIDAY...Southeast winds 5 to 10 kt becoming south 10 to 20 kt.
Waves 1 to 3 ft.
.FRIDAY NIGHT...South winds 15 to 25 kt. Waves 3 to 5 ft building
to 4 to 7 ft occasionally to 9 ft.
.SATURDAY...Southwest winds 15 to 25 kt becoming northwest to
30 kt. Chance of showers. Waves 5 to 8 ft occasionally to 10 ft.
.SATURDAY NIGHT...Northwest gales to 35 kt. Chance of snow
showers. Waves 6 to 9 ft occasionally to 12 ft building to 7 to 10
ft occasionally to 13 ft.
.SUNDAY...Northwest gales to 35 kt. Chance of snow showers. Waves
7 to 10 ft occasionally to 13 ft.
.MONDAY...Northwest winds 10 to 20 kt. Waves 3 to 5 ft subsiding
to 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-131630-
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-
246 AM CST Thu Nov 13 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...Northwest winds 10 to 20 kt becoming west. Waves 5 to
8 ft occasionally to 10 ft subsiding to 2 to 4 ft.
.TONIGHT...Southwest winds 10 to 15 kt becoming south. Waves 1 to
3 ft subsiding to 1 to 2 ft.
.FRIDAY...South winds 10 to 15 kt. Waves 2 to 4 ft.
.FRIDAY NIGHT...South winds 10 to 20 kt. Waves 3 to 5 ft building
to 4 to 7 ft occasionally to 9 ft.
.SATURDAY...Southwest winds 15 to 25 kt becoming west to 30 kt.
Chance of showers. Waves 5 to 8 ft occasionally to 10 ft.
.SATURDAY NIGHT...Northwest winds to 30 kt increasing to gales to
35 kt. Waves 8 to 11 ft occasionally to 14 ft building to 10 to
14 ft occasionally to 18 ft.
.SUNDAY...Northwest winds to 30 kt. Waves 10 to 14 ft
occasionally to 18 ft.
.MONDAY...Northwest winds 10 to 20 kt becoming north 10 to 15 kt.
Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft.

$$

LMZ761-131630-
MAFOR 1311/
MICHIGAN NORTH 11730 13630 11620 12710 11800. Waves 3 to 5 feet
subsiding to 2 to 4 feet today. Waves 1 to 3 feet subsiding to 1
foot or less tonight.

MICHIGAN SOUTH 11730 11720 12620 11510 11610 11510 11410. Waves 5
to 8 feet subsiding to 2 to 4 feet today. Waves 1 to 3 feet
tonight.

$$


Gehring

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

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