163
FZUS63 KMKX 240757
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
257 AM CDT Sat Oct 24 2026

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...

High pressure around 30.4 inches will prevail over New England and
the Mid Atlantic States today into Sunday, while 29.3 inch low
pressure tracks from western Manitoba to Hudson Bay. This pressure
pattern will result in modest to breezy southerly winds over Lake
Michigan today and tonight.

Winds will then trend southwesterly while steadily weakening
ahead of an approaching cold front on Sunday. Currently expecting
the front to move south across Lake Michigan late Sunday afternoon
into Sunday evening, bringing a breezy northeast wind shift.
Breezy northeast winds will continue through Monday as 30.7 inch
high pressure slides into Ontario from the Canadian Great Plains.
Winds will trend easterly and eventually southerly Tuesday into
the middle of next week as the aforementioned high shifts into the
northeastern United States.

LMZ261-362-364-366-563-565-567-868-241515-
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-
257 AM CDT Sat Oct 24 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...South winds 10 to 20 kt increasing to 30 kt. Waves 2 to
4 ft building to 4 to 6 ft occasionally to 8 ft.
.TONIGHT...South winds to 30 kt becoming southwest 15 to 25 kt.
Waves 4 to 6 ft occasionally to 8 ft.
.SUNDAY...Southwest winds 15 to 25 kt becoming west 10 to 20 kt.
Chance of showers in the afternoon. Waves 3 to 5 ft subsiding to
2 to 4 ft.
.SUNDAY NIGHT...North winds 10 to 15 kt increasing to 10 to
20 kt. Waves 2 to 4 ft.
.MONDAY...North winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 4 to 6 ft occasionally to 8 ft.
.MONDAY NIGHT...Northeast winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 4 to 6 ft occasionally to 8 ft.
.TUESDAY...East winds 10 to 20 kt becoming southeast. Waves 2 to
4 ft.
.WEDNESDAY...South winds 15 to 25 kt. Waves 4 to 6 ft
occasionally to 8 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-241515-
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-
257 AM CDT Sat Oct 24 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...South winds 10 to 20 kt increasing to 15 to 25 kt. Waves
4 to 6 ft occasionally to 8 ft.
.TONIGHT...South winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.
.SUNDAY...South winds 10 to 20 kt. Waves 2 to 4 ft.
.SUNDAY NIGHT...South winds 10 to 15 kt veering to northwest
10 to 20 kt. Waves 2 to 4 ft.
.MONDAY...North winds 10 to 20 kt becoming northeast 15 to 25 kt.
Waves 4 to 6 ft occasionally to 8 ft building to 4 to 7 ft
occasionally to 9 ft.
.MONDAY NIGHT...Northeast winds 15 to 25 kt becoming east 10 to
20 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
7 ft occasionally to 9 ft.
.TUESDAY...East winds 10 to 20 kt becoming southeast. Waves 3 to
5 ft.
.WEDNESDAY...South winds 15 to 25 kt increasing to 30 kt. Waves
4 to 6 ft occasionally to 8 ft.

$$

LMZ761-241515-
MAFOR 2410/
MICHIGAN NORTH 11410 11420 15430. Waves 1 to 3 feet building to 3
to 6 feet today. Waves 3 to 6 feet tonight.

MICHIGAN SOUTH 11410 11420 13430 13420. Waves 1 to 3 feet
building to 3 to 5 feet today. Waves 3 to 5 feet subsiding to 2
to 4 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