724
FZUS63 KMKX 250155
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
855 PM 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...

Low pressure near 29.2 inches will progress toward the Hudson Bay
this evening. Progression of the low will maintain generally
southerly flow across the waters, with gusts between 25-30 knots
possible over the northern half of the lake this afternoon and
tonight. Can`t rule out an isolated gust approaching gale force
during this time frame, with conditions not widespread enough for
headlines.

Winds will trend southwesterly while steadily weakening ahead of an
approaching cold front on Sunday. Currently expecting the front to
move south across Lake Michigan Sunday evening and night, bringing a
breezy northeast wind shift. Gales are not anticipated during the
frontal passage, with any isolated rain showers expected to remain
over the far northern part of the lake. 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 south to southwesterly Tuesday into Thursday as the
aforementioned high shifts into the northeastern United States.
Widespread rain chances return Wednesday into Friday.

LMZ261-362-364-366-563-565-567-868-250915-
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-
855 PM CDT Sat Oct 24 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...South winds 15 to 25 kt. Waves 3 to 5 ft.
.SUNDAY...Southwest winds 15 to 25 kt diminishing to 10 to 20 kt
late in the morning, then becoming west early in the afternoon
becoming north 10 to 15 kt late. Slight chance of showers in the
morning, then chance of showers in the afternoon. Waves 3 to 5 ft
subsiding to 2 to 4 ft.
.SUNDAY NIGHT...North winds 5 to 10 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 3 to 5 ft building to 4 to 6 ft occasionally to 8 ft.
.MONDAY NIGHT...Northeast winds 15 to 25 kt becoming east 10 to
20 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft.
.TUESDAY...Southeast winds 10 to 20 kt. Waves 3 to 5 ft.
.TUESDAY NIGHT...Southeast winds 15 to 25 kt. 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.
.THURSDAY...Southwest winds 10 to 20 kt becoming west 15 to
25 kt. Waves 3 to 5 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-250915-
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-
855 PM CDT Sat Oct 24 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...South winds 10 to 20 kt. Waves 3 to 5 ft.
.SUNDAY...South winds 10 to 20 kt diminishing to 10 to 15 kt.
Waves 2 to 4 ft.
.SUNDAY NIGHT...South winds 10 to 15 kt veering to north 10 to
20 kt. Waves 2 to 4 ft building to 3 to 5 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 4 to 7 ft occasionally to 9 ft subsiding to 4 to
6 ft occasionally to 8 ft.
.TUESDAY...Southeast winds 10 to 20 kt. Waves 4 to 6 ft
occasionally to 8 ft.
.TUESDAY NIGHT...Southeast winds 10 to 20 kt. Waves 3 to 5 ft.
.WEDNESDAY...South winds 15 to 25 kt. Waves 4 to 6 ft
occasionally to 8 ft.
.THURSDAY...Southwest winds 10 to 20 kt. Waves 3 to 5 ft.

$$

LMZ761-250915-
MAFOR 2504/
MICHIGAN NORTH 12430 11530 11520 11620 11710 12810. A chance of
showers Sunday afternoon. Waves 2 to 4 feet overnight. Waves 2 to
4 feet subsiding to 1 to 3 feet Sunday. Waves 1 to 3 feet Sunday
evening.

MICHIGAN SOUTH 14420 11420 12410 11500. Waves 1 to 3 feet.

$$


Patterson

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

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