574
FZUS63 KMKX 080753
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
253 AM CDT Wed Oct 8 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 northerly winds will gradually weaken through the morning
as high pressure around 30.4 inches builds over WI by this
afternoon. Will see this high pressure slowly work its way east
across the Great Lakes Region Thursday into Friday. This will
bring light an variable winds to Lake Michigan overnight tonight
into Thursday morning before turning more southerly through the
day Thursday. Increasing southerly winds are expected for Friday
as low pressure around 29.8 inches develops and works it way down
across Lake Superior and into the eastern Great Lakes for
Saturday.

LMZ261-362-364-366-563-565-567-868-081530-
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-
253 AM CDT Wed Oct 8 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...North winds 10 to 20 kt. Waves 3 to 5 ft subsiding to
2 to 4 ft.
.TONIGHT...Northeast winds 10 to 20 kt veering to southeast 10 to
15 kt. Waves 1 to 3 ft.
.THURSDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 2 to 4 ft.
.THURSDAY NIGHT...South winds 15 to 25 kt becoming southwest to
30 kt. Waves 3 to 5 ft building to 4 to 6 ft occasionally to
8 ft.
.FRIDAY...Southwest winds 15 to 25 kt. Chance of showers. Waves
4 to 7 ft occasionally to 9 ft.
.FRIDAY NIGHT...Northwest winds 15 to 25 kt becoming north 10 to
20 kt. Chance of showers. Waves 4 to 7 ft occasionally to 9 ft
subsiding to 3 to 5 ft.
.SATURDAY...Northeast winds 10 to 15 kt. Waves 1 to 3 ft.
.SUNDAY...Southeast winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 4 to 6 ft occasionally to 8 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-081530-
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-
253 AM CDT Wed Oct 8 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...Northeast winds 10 to 20 kt becoming north. Waves 4 to
7 ft occasionally to 9 ft subsiding to 3 to 5 ft.
.TONIGHT...Northeast winds 10 to 20 kt veering to southeast 10 to
15 kt. Waves 2 to 4 ft.
.THURSDAY...Southeast winds 10 to 15 kt increasing to 10 to
20 kt. Waves 2 to 4 ft.
.THURSDAY NIGHT...South winds 10 to 20 kt. Waves 3 to 5 ft
building to 4 to 6 ft occasionally to 8 ft.
.FRIDAY...Southwest winds 15 to 25 kt. Waves 4 to 7 ft
occasionally to 9 ft.
.FRIDAY NIGHT...West winds 10 to 20 kt becoming north. Chance of
showers. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to
5 ft.
.SATURDAY...North winds 10 to 20 kt becoming northeast 10 to
15 kt. Waves 2 to 4 ft.
.SUNDAY...Southeast winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 4 to 6 ft occasionally to 8 ft.

$$

LMZ761-081530-
MAFOR 0810/
MICHIGAN NORTH 12820 11810 12820 11110 11210 11310. Waves 2 to 4
feet subsiding to 1 to 3 feet today. Waves 1 to 3 feet tonight.

MICHIGAN SOUTH 11820 11120 11110 11820 11120 11110 12210. Waves 3
to 6 feet subsiding to 2 to 4 feet today. Waves 1 to 3 feet
tonight.

$$


Wagner

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

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