729
FZUS63 KMKX 110153
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
853 PM CDT Fri Oct 10 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...

Low pressure of 29.9 inches just east of Lake Superior early this
evening, will move to the lower Great Lakes for Saturday morning
and weaken to 30.0 inches. Meanwhile, high pressure of 30.2
inches will move into northern Wisconsin tonight. A Canadian cold
front will exit southern Lake MI by late this evening with breezy
north winds over the entire lake through the night. The north
winds will weaken on Saturday and turn northeasterly.

Modest southeast winds will then prevail from late Saturday night
through Sunday night, turning southerly on Monday. This will occur
as strong high pressure prevails over southeast Canada and low
pressure tracks from the northern high plains into Manitoba.


LMZ261-362-364-366-563-565-567-868-110930-
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-
853 PM CDT Fri Oct 10 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Northwest winds to 30 kt becoming north 15 to
25 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to
6 ft occasionally to 8 ft.
.SATURDAY...North winds 10 to 20 kt becoming northeast 10 to
15 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.SATURDAY NIGHT...East winds 10 to 20 kt becoming southeast.
Waves 2 to 4 ft.
.SUNDAY...Southeast winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 3 to 5 ft.
.SUNDAY NIGHT...Southeast winds 15 to 25 kt. Waves 3 to 5 ft
building to 4 to 7 ft occasionally to 9 ft.
.MONDAY...South winds 10 to 20 kt. Chance of showers in the
afternoon. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to
5 ft.
.MONDAY NIGHT...West winds 10 to 15 kt becoming north 10 to
20 kt. Waves 2 to 4 ft.
.TUESDAY...North winds 10 to 20 kt. Waves 3 to 5 ft.
.WEDNESDAY...North winds 10 to 20 kt. Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-110930-
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-
853 PM CDT Fri Oct 10 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Northwest winds 15 to 25 kt becoming north
10 to 20 kt. Slight chance of showers through early evening.
Waves 4 to 6 ft occasionally to 8 ft.
.SATURDAY...North winds 10 to 20 kt becoming northeast 10 to
15 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft.
.SATURDAY NIGHT...Northeast winds 10 to 15 kt becoming southeast
10 to 20 kt. Waves 3 to 5 ft.
.SUNDAY...Southeast winds 10 to 20 kt. Waves 3 to 5 ft.
.SUNDAY NIGHT...Southeast winds 10 to 20 kt increasing to 15 to
25 kt. Waves 3 to 5 ft building to 4 to 7 ft occasionally to
9 ft.
.MONDAY...South winds 10 to 20 kt. Waves 4 to 7 ft occasionally
to 9 ft subsiding to 3 to 5 ft.
.MONDAY NIGHT...Northwest winds 10 to 15 kt becoming north 10 to
20 kt. Waves 2 to 4 ft.
.TUESDAY...North winds 10 to 20 kt. Waves 4 to 6 ft occasionally
to 8 ft.
.WEDNESDAY...North winds 10 to 20 kt. Waves 3 to 5 ft.

$$

LMZ761-110930-
MAFOR 1104/
MICHIGAN NORTH 11840 11830 11820 11120 13110 11210. Waves 3 to 6
feet overnight. Waves 3 to 5 feet subsiding to 1 to 3 feet
Saturday. Waves 1 to 3 feet Saturday evening.

MICHIGAN SOUTH 11830 13820 13110 11210. Waves 3 to 6 feet
overnight. Waves 3 to 5 feet subsiding to 2 to 4 feet Saturday.
Waves 1 to 3 feet Saturday evening.

$$


Gehring

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

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