852
FZUS63 KMKX 281348
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
848 AM CDT Wed Oct 28 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...

No major changes to the going forecast this morning.

High pressure of 30.4 inches over New England will move offshore
later today, while weak low pressure over the central high plains
tracks to western Lake Superior for this evening. The low will
then deepen to 29.5 inches as it tracks northeast across Ontario
into Quebec through Thursday. Modest south winds today will become
breezy tonight with gusts approaching gale force over far northern
Lake Michigan. Winds then become southwesterly and come around
to northwesterly with the passage of a cold front Thursday
morning. Winds then quickly slow behind the front Thursday
afternoon and evening as high pressure of 30.2 inches works in
from the central plains.

LMZ261-362-364-366-563-565-567-868-282115-
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-
848 AM CDT Wed Oct 28 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...South winds 10 to 20 kt. Waves 2 to 4 ft.
.TONIGHT...South winds to 30 kt becoming southwest. Slight chance
of showers in the evening, then showers likely with slight chance
of thunderstorms overnight. Waves 3 to 5 ft building to 6 to 9 ft
occasionally to 12 ft.
.THURSDAY...West winds to 30 kt diminishing to 10 to 20 kt late
in the morning, then becoming northwest early in the afternoon
becoming northwest 10 to 20 kt late. Waves 5 to 8 ft occasionally
to 10 ft subsiding to 3 to 5 ft.
.THURSDAY NIGHT...Northwest winds 15 to 25 kt diminishing to
10 to 20 kt. Waves 2 to 4 ft.
.FRIDAY...Northwest winds 10 to 20 kt. Waves 1 to 3 ft.
.FRIDAY NIGHT...Southwest winds 10 to 15 kt backing to east.
Waves 1 to 2 ft.
.SATURDAY...Southeast winds 10 to 15 kt. Waves 1 to 3 ft.
.SUNDAY...Southeast winds 5 to 10 kt. Waves 1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-282115-
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-
848 AM CDT Wed Oct 28 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...South winds 10 to 15 kt increasing to 10 to
20 kt. Waves 2 to 4 ft.
.TONIGHT...South winds 15 to 25 kt becoming southwest to 30 kt.
Chance of showers and slight chance of thunderstorms overnight.
Waves 4 to 7 ft occasionally to 9 ft.
.THURSDAY...Southwest winds 15 to 25 kt becoming northwest 10 to
20 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to
4 ft.
.THURSDAY NIGHT...Northwest winds 10 to 20 kt becoming north.
Waves 2 to 4 ft.
.FRIDAY...Northeast winds 5 to 10 kt. Waves 1 to 3 ft subsiding
to 1 to 2 ft.
.FRIDAY NIGHT...East winds 10 to 15 kt. Waves 1 to 3 ft.
.SATURDAY...East winds 10 to 20 kt. Waves 2 to 4 ft.
.SUNDAY...East winds 10 to 15 kt. Waves 1 to 2 ft.

$$

LMZ761-282115-
MAFOR 2816/
MICHIGAN NORTH 11520 11420 11430 12440 11546 11540 11630. Waves 1
to 3 feet this afternoon. Waves 2 to 4 feet building to 5 to 8
feet tonight. Waves 4 to 7 feet subsiding to 3 to 5 feet Thursday
morning.

MICHIGAN SOUTH 12420 13430 11540 11530 11520. A chance of showers
overnight. Waves 1 to 3 feet this afternoon. Waves 2 to 4 feet
building to 3 to 6 feet tonight. Waves 3 to 6 feet Thursday
morning.

$$


CMiller

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

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