092
FZUS63 KMKX 300827
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
227 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 29.7 inches located over Lake Michigan early this
morning will rapidly lift northeastward to Lake Huron by mid to
late morning while deepening to 29.6 inches, and then into Quebec
by tonight. A Gale Warning is in effect. Winds will gradually
ease Sunday night into Monday as high pressure around 30.6 inches
builds across the Great Lakes exiting to the east Monday night.

LMZ261-362-364-366-563-565-567-868-301615-
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-
227 AM CST Sun Nov 30 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

...GALE WARNING IN EFFECT FROM 6 AM CST THIS MORNING THROUGH THIS
AFTERNOON...

.TODAY...North gales to 35 kt becoming northwest to 30 kt. Snow
this 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 4 to 7 ft
occasionally to 9 ft.
.WEDNESDAY...West winds to 30 kt becoming northwest. Snow. Waves
5 to 8 ft occasionally to 10 ft.
.THURSDAY...Northwest winds 15 to 25 kt becoming west to 30 kt.
Chance of snow. Waves 4 to 7 ft occasionally to 9 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-301615-
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-
227 AM CST Sun Nov 30 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WARNING IN EFFECT FROM 6 AM CST THIS MORNING THROUGH THIS
AFTERNOON...

.TODAY...Northwest gales to 35 kt. Chance of snow and slight
chance of rain this 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 11 ft occasionally to 14 ft.
.THURSDAY...Northwest winds 15 to 25 kt becoming west. Waves 7 to
10 ft occasionally to 13 ft subsiding to 5 to 8 ft occasionally
to 10 ft.

$$

LMZ761-301615-
MAFOR 3011/
MICHIGAN NORTH...GALE WARNING IN EFFECT...11847 11857 11850 11750
12740 11720 11710. Waves 4 to 7 feet building to 9 to 13 feet
today. Waves 6 to 9 feet subsiding to 1 to 3 feet tonight.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...11757 13750 11740 11730
11720 11700. Waves 5 to 9 feet building to 10 to 14 feet today.
Waves 9 to 12 feet subsiding to 3 to 5 feet tonight.

$$


Boxell

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

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