454
FZUS63 KMKX 270759
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
259 AM CDT Tue Oct 27 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...

A large area of high pressure around 30.5 inches slowly tracking
from Ontario into New England by late tonight, while weakening low
pressure will move northward across Minnesota into Canada.
Modest to breezy southeast winds today and evening will shift
south late tonight through Wednesday. A cold front will then
gradually move across the lake on Thursday, with winds shifting
from modest to breezy southwest winds Wednesday night to lighter
northwest winds after the passage.

LMZ261-362-364-366-563-565-567-868-271530-
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-
259 AM CDT Tue Oct 27 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...Southeast winds 10 to 20 kt. Chance of sprinkles. Waves
2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.
.TONIGHT...Southeast winds 10 to 20 kt becoming south. Waves 3 to
5 ft.
.WEDNESDAY...South winds 10 to 20 kt. Waves 3 to 5 ft.
.WEDNESDAY NIGHT...South winds 15 to 25 kt becoming southwest to
30 kt. Chance of showers in the evening, then showers overnight.
Waves 3 to 5 ft building to 4 to 6 ft occasionally to 8 ft.
.THURSDAY...Southwest winds to 30 kt becoming northwest 10 to
20 kt in the afternoon. Chance of showers in the morning. Waves
4 to 6 ft occasionally to 8 ft.
.THURSDAY NIGHT...Northwest winds 10 to 15 kt. Waves 1 to 3 ft
subsiding to 1 to 2 ft.
.FRIDAY...North winds 5 to 10 kt backing to west. Waves 1 to
2 ft.
.SATURDAY...Southeast winds 10 to 20 kt. Waves 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-271530-
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-
259 AM CDT Tue Oct 27 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...Southeast winds 10 to 20 kt. Waves 4 to 6 ft
occasionally to 8 ft.
.TONIGHT...Southeast winds 10 to 20 kt becoming south. Waves 3 to
5 ft.
.WEDNESDAY...South winds 10 to 20 kt. Waves 2 to 4 ft.
.WEDNESDAY NIGHT...South winds 10 to 20 kt increasing to 15 to
25 kt. Waves 4 to 6 ft occasionally to 8 ft.
.THURSDAY...Southwest winds 15 to 25 kt becoming west 10 to
20 kt. Chance of showers. Waves 4 to 6 ft occasionally to 8 ft.
.THURSDAY NIGHT...North winds 5 to 10 kt. Waves 2 to 4 ft
subsiding to 1 to 2 ft.
.FRIDAY...Northeast winds 5 to 10 kt becoming east. Waves 1 to
2 ft.
.SATURDAY...Southeast winds 10 to 20 kt. Chance of showers. Waves
2 to 4 ft.

$$

LMZ761-271530-
MAFOR 2710/
MICHIGAN NORTH 11220 14320 11320 12420. Waves 1 to 3 feet
building to 3 to 5 feet today. Waves 2 to 4 feet tonight.

MICHIGAN SOUTH 11220 14320 11320 12420. Waves 3 to 5 feet today.
Waves 2 to 4 feet subsiding to 1 to 3 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