462
FZUS63 KMKX 290216
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
916 PM CDT Thu Aug 28 2025

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...

Breezy northeast winds are expected to gradually weaken overnight
into Friday morning, with waves slowly subsiding. High pressure
around 30.2 inches will then prevail over the Great Lakes region
for Friday afternoon into the Labor Day weekend. This will bring
an extended period of light and variable winds, along with quiet
weather.

LMZ261-362-364-366-563-565-567-868-290930-
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-
916 PM CDT Thu Aug 28 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Northeast winds 10 to 20 kt diminishing to
10 to 15 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to
2 to 4 ft.
.FRIDAY...Northeast winds 5 to 10 kt becoming north 10 to 15 kt.
Waves 1 to 3 ft subsiding to 1 to 2 ft.
.FRIDAY NIGHT...North winds 10 to 15 kt backing to southwest.
Waves 1 ft or less.
.SATURDAY...Southwest winds 10 to 15 kt. Waves 1 ft or less.
.SATURDAY NIGHT...Southwest winds 10 to 15 kt diminishing to 5 to
10 kt. Waves 1 ft or less.
.SUNDAY...Southwest winds 5 to 10 kt increasing to 10 to 15 kt.
Waves nearly calm.
.SUNDAY NIGHT...Southwest winds 5 to 10 kt becoming south. Waves
nearly calm.
.MONDAY...Southwest winds 5 to 10 kt increasing to 10 to 15 kt.
Waves nearly calm.
.TUESDAY...South winds 10 to 15 kt becoming southwest 10 to
20 kt. Waves 1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-290930-
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-
916 PM CDT Thu Aug 28 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...North winds 15 to 25 kt becoming northeast
10 to 20 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to
4 to 6 ft occasionally to 8 ft.
.FRIDAY...Northeast winds 10 to 15 kt becoming north. Waves 3 to
5 ft subsiding to 1 to 3 ft.
.FRIDAY NIGHT...North winds 10 to 15 kt becoming east. Waves 1 to
2 ft.
.SATURDAY...East winds 5 to 10 kt becoming northeast. Waves 1 ft
or less.
.SATURDAY NIGHT...Northeast winds 5 to 10 kt becoming east. Waves
nearly calm.
.SUNDAY...East winds 5 to 10 kt becoming northeast. Waves nearly
calm.
.SUNDAY NIGHT...Northeast winds 5 to 10 kt becoming east. Waves
1 ft or less.
.MONDAY...East winds 5 to 10 kt becoming northeast. Waves nearly
calm.
.TUESDAY...Southeast winds 5 to 10 kt becoming south 10 to 15 kt.
Waves 1 to 2 ft.

$$

LMZ761-290930-
MAFOR 2904/
MICHIGAN NORTH 11120 11110 13100 12810 11100. Waves 3 to 5 feet
subsiding to 1 to 3 feet overnight. Waves 1 to 3 feet subsiding
to 1 foot or less Friday. Waves 1 foot or less Friday evening.

MICHIGAN SOUTH 11130 11120 11110 11100 11110 12810 11100. Waves 4
to 7 feet subsiding to 3 to 6 feet overnight. Waves 2 to 4 feet
subsiding to 1 to 3 feet Friday. Waves 1 to 2 feet Friday
evening.

$$
Wood

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

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