050
FZUS63 KMKX 301451
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
851 AM CST Sun Nov 30 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...

Low pressure of 29.6 inches located over Lake Huron this morning
will continue to rapidly move northeastward over the Quebec
province tonight. A Gale Warning remains in effect for Lake
Michigan through 3 PM. Winds will gradually ease tonight and
Monday as high pressure around 30.6 inches builds across the Great
Lakes. Another area of low pressure of around 29.5 inches will
quickly move across southern Canada Tuesday and Wednesday,
bringing a cold front and a brief chance of light snow to the
region. High pressure of 30.4 inches will then build into the
Great Plains and Midwest during the mid to late week time frame.

LMZ261-362-364-366-563-565-567-868-302230-
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-
851 AM CST Sun Nov 30 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

...GALE WARNING IN EFFECT UNTIL 3 PM CST THIS AFTERNOON...

.REST OF TODAY...North gales to 35 kt becoming northwest to
30 kt. Chance of snow through mid morning, then slight chance of
snow this afternoon. Waves 5 to 8 ft occasionally to 10 ft
building to 10 to 14 ft occasionally to 18 ft.
.TONIGHT...Northwest winds to 30 kt becoming west 10 to 15 kt.
Waves 7 to 10 ft occasionally to 13 ft subsiding to 2 to 4 ft.
.MONDAY...West winds 10 to 20 kt becoming southwest to 30 kt.
Chance of snow in the afternoon. Waves 1 to 3 ft building to 4 to
6 ft occasionally to 8 ft.
.MONDAY NIGHT...West winds to 30 kt diminishing to 15 to 25 kt.
Chance of snow. Waves 4 to 6 ft occasionally to 8 ft subsiding to
3 to 5 ft.
.TUESDAY...West winds 10 to 20 kt. Waves 2 to 4 ft.
.TUESDAY NIGHT...Southwest winds 15 to 25 kt increasing to 30 kt.
Chance of snow. Waves 3 to 5 ft building to 5 to 8 ft
occasionally to 10 ft.
.WEDNESDAY...West winds to 30 kt becoming northwest. Snow. Waves
6 to 9 ft occasionally to 12 ft.
.THURSDAY...Northwest winds 15 to 25 kt becoming west to 30 kt.
Chance of snow. Waves 6 to 9 ft occasionally to 12 ft subsiding
to 4 to 7 ft occasionally to 9 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-302230-
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-
851 AM CST Sun Nov 30 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WARNING IN EFFECT UNTIL 3 PM CST THIS AFTERNOON...

.REST OF TODAY...Northwest gales to 35 kt. Rain likely with a
chance of snow through mid morning, then chance of snow this
afternoon. Waves 7 to 10 ft occasionally to 13 ft building to
10 to 14 ft occasionally to 18 ft.
.TONIGHT...Northwest winds to 30 kt diminishing to 5 to 10 kt.
Waves 8 to 12 ft occasionally to 16 ft subsiding to 3 to 5 ft.
.MONDAY...West winds 10 to 15 kt becoming southwest 10 to 20 kt.
Chance of snow in the afternoon. Waves 2 to 4 ft.
.MONDAY NIGHT...Southwest winds 10 to 20 kt becoming west. Snow
in the evening, then chance of snow overnight. Waves 4 to 6 ft
occasionally to 8 ft.
.TUESDAY...Northwest winds 10 to 20 kt becoming west. Chance of
snow in the morning. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.TUESDAY NIGHT...Southwest winds 10 to 20 kt increasing to 30 kt.
Chance of snow. Waves 4 to 6 ft occasionally to 8 ft building to
6 to 9 ft occasionally to 12 ft.
.WEDNESDAY...Southwest winds to 30 kt becoming west. Chance of
snow. Waves 8 to 12 ft occasionally to 16 ft.
.THURSDAY...Northwest winds 15 to 25 kt becoming west. Waves
10 to 14 ft occasionally to 18 ft subsiding to 6 to 9 ft
occasionally to 12 ft.

$$

LMZ761-302230-
MAFOR 3017/
MICHIGAN NORTH...GALE WARNING IN EFFECT...11850 11750 12740 11720
11710 11610 11530. A chance of snow late this morning. Waves 8 to
11 feet building to 9 to 13 feet this afternoon. Waves 6 to 9
feet subsiding to 1 to 3 feet tonight. Waves 1 to 3 feet Monday
morning.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...12750 11740 11730 11720
11700 11600 11510. A chance of snow this afternoon. Waves 8 to 11
feet building to 10 to 14 feet this afternoon. Waves 9 to 12 feet
subsiding to 3 to 5 feet tonight. Waves 1 to 3 feet Monday
morning.

$$


Gagan

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

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