191
FZUS63 KMKX 302054
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
254 PM 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 southern Quebec/Ontario
this afternoon will continue to rapidly move northeastward over
the Quebec province tonight. A Gale Warning has been extended for
Lake Michigan through 6 PM for continued gales. 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.

LMZ261-362-364-366-563-565-567-868-010415-
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-
254 PM CST Sun Nov 30 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

...GALE WARNING IN EFFECT UNTIL 6 PM CST THIS EVENING...

.TONIGHT...Northwest winds to 30 kt diminishing to 15 to 25 kt
late this evening, then diminishing to 10 to 20 kt after midnight
becoming west 10 to 15 kt late. Chance of snow and slight chance
of light freezing rain this evening. Waves 7 to 10 ft
occasionally to 13 ft subsiding to 2 to 4 ft.
.MONDAY...West winds 10 to 20 kt becoming southwest 15 to 25 kt.
Waves 1 to 3 ft building to 4 to 6 ft occasionally to 8 ft.
.MONDAY NIGHT...Southwest winds to 30 kt becoming west 15 to
25 kt, then diminishing to 10 to 20 kt late. Chance of snow in
the evening. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.TUESDAY...West winds 10 to 20 kt becoming southwest 15 to 25 kt.
Waves 2 to 4 ft.
.TUESDAY NIGHT...Southwest winds to 30 kt increasing to gales to
35 kt. Chance of snow overnight. Waves 4 to 6 ft occasionally to
8 ft building to 7 to 10 ft occasionally to 13 ft.
.WEDNESDAY...West gales to 35 kt becoming northwest to 30 kt.
Snow likely. Waves 8 to 11 ft occasionally to 14 ft subsiding to
7 to 10 ft occasionally to 13 ft.
.WEDNESDAY NIGHT...Northwest gales to 35 kt. Freezing spray.
Chance of snow. Waves 6 to 9 ft occasionally to 12 ft.
.THURSDAY...Northwest winds to 30 kt becoming west. Freezing
spray. Waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to
7 ft occasionally to 9 ft.
.FRIDAY...Southwest winds to 30 kt. Chance of snow. Waves 8 to
11 ft occasionally to 14 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-010415-
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-
254 PM CST Sun Nov 30 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WARNING IN EFFECT UNTIL 6 PM CST THIS EVENING...

.TONIGHT...Northwest winds 15 to 25 kt diminishing to 5 to 10 kt.
Slight chance of snow this evening. Waves 8 to 12 ft occasionally
to 16 ft subsiding to 3 to 5 ft.
.MONDAY...West winds 5 to 10 kt becoming southwest 10 to 20 kt.
Slight chance of snow in the morning, then chance of snow in the
afternoon. Waves 2 to 4 ft.
.MONDAY NIGHT...Southwest winds 10 to 20 kt veering to northwest.
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. Waves 3 to 5 ft.
.TUESDAY NIGHT...Southwest winds 15 to 25 kt increasing to 30 kt.
Chance of snow in the evening. Waves 4 to 7 ft occasionally to
9 ft building to 8 to 12 ft occasionally to 16 ft.
.WEDNESDAY...Southwest gales to 35 kt becoming west to 30 kt.
Chance of snow in the morning, then snow likely in the afternoon.
Waves 10 to 14 ft occasionally to 18 ft.
.WEDNESDAY NIGHT...Northwest winds to 30 kt. Freezing spray.
Chance of snow. Waves 8 to 11 ft occasionally to 14 ft building
to 8 to 12 ft occasionally to 16 ft.
.THURSDAY...Northwest winds to 30 kt diminishing to 15 to 25 kt.
Freezing spray. Waves 8 to 12 ft occasionally to 16 ft subsiding
to 6 to 9 ft occasionally to 12 ft.
.FRIDAY...Southwest winds to 30 kt. Chance of snow. Waves 8 to
12 ft occasionally to 16 ft.

$$

LMZ761-010415-
MAFOR 3023/
MICHIGAN NORTH...GALE WARNING IN EFFECT...11740 11730 11720 12610
11520 12530. A chance of snow this evening. Waves 6 to 10 feet
subsiding to 1 to 3 feet tonight. Waves 1 to 3 feet building to 3
to 5 feet Monday.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...11740 12720 11700 11600
11510 11520 11517. Waves 9 to 13 feet subsiding to 3 to 6 feet
tonight. Waves 1 to 3 feet Monday.

$$


Kuroski

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

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