048
FZUS63 KMKX 240310
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
910 PM CST Sun Nov 23 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...

Southwest winds are expected overnight, as high pressure around
30.4 inches moves into the Mid-Atlantic region. Winds will be
south to southwest and increase on Monday, as low pressure around
29.8 inches develops in the Middle Mississippi Valley. Southerly
winds will continue into Tuesday, as low pressure strengthens to
29.6 inches over Minnesota.

A cold front from this low will surge eastward across the lake
Tuesday night, as the low continues to strengthen to around 29.3
inches, bringing westerly gales by Wednesday morning. Westerly
gales will become northwesterly Wednesday night, continuing into
Thursday morning before diminishing, as the low pressure system
finally shifts into northern Quebec.

LMZ261-362-364-366-563-565-567-868-241015-
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-
910 PM CST Sun Nov 23 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Southwest winds 10 to 15 kt increasing to
15 to 25 kt. Waves 1 to 2 ft building to 2 to 4 ft.
.MONDAY...Southwest winds to 30 kt. Waves 4 to 6 ft occasionally
to 8 ft building to 5 to 8 ft occasionally to 10 ft.
.MONDAY NIGHT...Southwest winds 10 to 20 kt becoming south 5 to
10 kt. Rain likely. Waves 4 to 6 ft occasionally to 8 ft
subsiding to 2 to 4 ft.
.TUESDAY...South winds 10 to 15 kt. Rain likely. Waves 1 to 3 ft.
.TUESDAY NIGHT...South winds 10 to 20 kt becoming southwest to
30 kt overnight. Rain. Waves 2 to 4 ft building to 7 to 10 ft
occasionally to 13 ft.
.WEDNESDAY...West gales to 40 kt increasing to 45 kt in the
afternoon. Rain with snow likely in the morning, then snow in the
afternoon. Waves 12 to 16 ft occasionally to 21 ft building to 14
to 18 ft occasionally to 23 ft.
.WEDNESDAY NIGHT...West gales to 45 kt becoming northwest. Snow.
Waves 14 to 18 ft occasionally to 23 ft.
.THURSDAY...Northwest gales to 45 kt diminishing to gales to
40 kt. Chance of snow. Waves 12 to 16 ft occasionally to 21 ft.
.FRIDAY...Northwest winds to 30 kt diminishing to 15 to 25 kt.
Chance of snow. Waves 5 to 8 ft occasionally to 10 ft subsiding
to 4 to 6 ft occasionally to 8 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-241015-
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-
910 PM CST Sun Nov 23 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Southwest winds 10 to 15 kt becoming south
10 to 20 kt. Waves 1 to 3 ft.
.MONDAY...South winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.
.MONDAY NIGHT...South winds 10 to 20 kt diminishing to 10 to
15 kt. Rain likely. Waves 4 to 6 ft occasionally to 8 ft
subsiding to 2 to 4 ft.
.TUESDAY...South winds 5 to 10 kt becoming southwest. Chance of
rain. Waves 1 to 3 ft.
.TUESDAY NIGHT...Southwest winds 10 to 20 kt becoming west gales
to 35 kt overnight. Rain in the evening, then chance of rain
overnight. Waves 3 to 5 ft building to 8 to 12 ft occasionally to
16 ft.
.WEDNESDAY...West gales to 45 kt. Chance of rain in the morning,
then chance of snow in the afternoon. Waves 14 to 18 ft
occasionally to 23 ft building to 15 to 20 ft occasionally to
26 ft.
.WEDNESDAY NIGHT...West gales to 45 kt. Chance of snow. Waves
15 to 20 ft occasionally to 26 ft.
.THURSDAY...Northwest gales to 40 kt. Chance of snow. Waves 15 to
20 ft occasionally to 26 ft.
.FRIDAY...Northwest winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to 8 ft
occasionally to 10 ft.

$$

LMZ761-241015-
MAFOR 2405/
MICHIGAN NORTH 11520 12530 13540 11536 11516. Waves 2 feet or
less building to 2 to 4 feet overnight. Waves 3 to 5 feet
building to 4 to 7 feet Monday. Waves 3 to 6 feet subsiding to 2
to 4 feet Monday evening.

MICHIGAN SOUTH 11510 11420 14430 11420 11416. Waves 1 to 3 feet
overnight. Waves 2 to 4 feet building to 3 to 6 feet Monday.
Waves 3 to 5 feet subsiding to 2 to 4 feet Monday evening.

$$
Wood

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

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