963
FZUS63 KMKX 280155
GLFLM

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

High pressure of 30.5 inches in western Quebec will continue east
into the New England states. Meanwhile, a broad low pressure
around 29.8 inches will move into the Northern Plains. Moderate
east to southeast winds this evening will gradually become
southerly by Wednesday morning. Breezy south winds will persist
Wednesday, with gusts approaching gales across the far northern
edge of the Lake Wednesday night ahead of an approaching cold
front. Gusts will stop a couple knots short of gales over the
northern end of Lake Michigan, though a few intermittent gusts to
gale force can`t be ruled out.

Winds then become southwesterly and come around to northwesterly
following the front. Winds then quickly slow behind the front
Thursday afternoon and evening as high pressure of 30.2 inches
works in from the central plains.

LMZ261-362-364-366-563-565-567-868-280915-
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 Tue Oct 27 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Southeast winds 10 to 20 kt becoming south.
Slight chance of showers through early evening. Waves 2 to 4 ft.
.WEDNESDAY...South winds 10 to 20 kt. Waves 2 to 4 ft.
.WEDNESDAY NIGHT...South winds 15 to 25 kt becoming southwest to
30 kt. Chance of showers overnight. Waves 3 to 5 ft building to
6 to 9 ft occasionally to 12 ft.
.THURSDAY...Southwest winds to 30 kt becoming northwest 10 to
20 kt in the afternoon. Waves 5 to 8 ft occasionally to 10 ft
subsiding to 3 to 5 ft.
.THURSDAY NIGHT...Northwest winds 10 to 20 kt. Waves 1 to 3 ft.
.FRIDAY...Northwest winds 10 to 20 kt. Waves 1 to 3 ft.
.FRIDAY NIGHT...Northeast winds 10 to 15 kt becoming east. Waves
1 to 2 ft.
.SATURDAY...Southeast winds 10 to 15 kt. Waves 1 to 3 ft.
.SUNDAY...Southeast winds 10 to 15 kt becoming east. Waves 1 to
2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-280915-
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 Tue Oct 27 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Southeast winds 10 to 20 kt becoming south.
Waves 2 to 4 ft.
.WEDNESDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 2 to 4 ft.
.WEDNESDAY NIGHT...South winds 15 to 25 kt becoming southwest to
30 kt. Chance of showers overnight. Waves 3 to 5 ft building to
4 to 7 ft occasionally to 9 ft.
.THURSDAY...Southwest winds 15 to 25 kt becoming west 10 to
20 kt. Chance of showers. Waves 4 to 7 ft occasionally to 9 ft
subsiding to 4 to 6 ft occasionally to 8 ft.
.THURSDAY NIGHT...Northwest winds 10 to 20 kt becoming north
10 to 15 kt. Waves 2 to 4 ft.
.FRIDAY...Northeast winds 5 to 10 kt. Waves 1 to 3 ft.
.FRIDAY NIGHT...Northeast winds 5 to 10 kt becoming east 10 to
15 kt. Waves 1 to 3 ft.
.SATURDAY...East winds 10 to 20 kt. Chance of showers. Waves 2 to
4 ft.
.SUNDAY...East winds 10 to 20 kt. Chance of showers. Waves 1 to
3 ft.

$$

LMZ761-280915-
MAFOR 2804/
MICHIGAN NORTH 15420 11430 11440. Waves 1 to 3 feet overnight and
Wednesday. Waves 3 to 5 feet Wednesday evening.

MICHIGAN SOUTH 11420 13410 12420 12430. Waves 1 to 3 feet
overnight and Wednesday. Waves 2 to 4 feet building to 3 to 5
feet Wednesday evening.

$$


Patterson

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

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