965
FZUS63 KMKX 310907
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
307 AM CST Fri Jan 31 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...

Some dense fog is expected across southern portions of the lake
into this morning, where a Dense Fog Advisory is in effect.

Brisk north to northeast winds are expected into tonight, as low
pressure around 29.6 inches tracks from central Illinois to
Pennsylvania. A few gale force gusts may occur this evening in
southern portions of the lake.

Modest east to northeast winds Saturday morning will shift
southeast in the afternoon and Saturday night and become gusty,
as polar high pressure around 30.7 inches moves southeast across
Ontario. Low pressure around 29.7 inches will also move into the
northern Plains.

Breezy southerly winds will continue into Sunday, as low pressure
around 29.6 inches shifts into western Ontario. A cold frontal
passage will shift the winds to westerly for Sunday night and
northwest by Monday.

LMZ261-362-364-366-563-565-567-868-311630-
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-
307 AM CST Fri Jan 31 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...Northeast winds 15 to 25 kt becoming north to 30 kt.
Waves 2 to 4 ft building to 5 to 8 ft occasionally to 10 ft.
.TONIGHT...North winds to 30 kt diminishing to 10 to 20 kt. Waves
5 to 8 ft occasionally to 10 ft subsiding to 4 to 6 ft
occasionally to 8 ft.
.SATURDAY...Northeast winds 10 to 15 kt becoming east 10 to 20 kt
late in the morning, then becoming southeast early in the
afternoon increasing to 15 to 25 kt late. Waves 3 to 5 ft.
.SATURDAY NIGHT...Southeast winds to 30 kt. Chance of snow in the
evening, then snow overnight. Waves 8 to 11 ft occasionally to
14 ft.
.SUNDAY...South winds to 30 kt becoming southwest 10 to 20 kt in
the afternoon. Chance of snow and rain in the morning. Waves 6 to
9 ft occasionally to 12 ft subsiding to 4 to 7 ft occasionally to
9 ft.
.SUNDAY NIGHT...Southwest winds to 30 kt becoming west. Waves
4 to 6 ft occasionally to 8 ft.
.MONDAY...Northwest winds to 30 kt diminishing to 15 to 25 kt.
Waves 4 to 6 ft occasionally to 8 ft.
.TUESDAY...Northwest winds 10 to 20 kt. Waves 1 to 3 ft.

$$

LMZ669-671-870-872-311630-
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 Whitehall to Pentwater MI 5 NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to
Mid Lake-
307 AM CST Fri Jan 31 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH TO NORTH POINT LIGHT WI TO
GRAND HAVEN MI...

.TODAY...Northeast winds 15 to 25 kt becoming north to 30 kt.
Patchy fog this morning. Slight chance of rain this morning.
Waves 2 to 4 ft building to 7 to 10 ft occasionally to 13 ft.
.TONIGHT...North winds to 30 kt becoming northeast 10 to 20 kt.
Waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to 7 ft
occasionally to 9 ft.
.SATURDAY...Northeast winds 10 to 20 kt becoming southeast 15 to
25 kt. Waves 4 to 6 ft occasionally to 8 ft.
.SATURDAY NIGHT...Southeast winds to 30 kt becoming south. Snow
likely overnight. Waves 7 to 10 ft occasionally to 13 ft.
.SUNDAY...South winds 10 to 20 kt becoming southwest. Chance of
rain and snow in the morning. Waves 6 to 9 ft occasionally to
12 ft subsiding to 4 to 7 ft occasionally to 9 ft.
.SUNDAY NIGHT...West winds 10 to 20 kt becoming northwest. Waves
3 to 5 ft.
.MONDAY...Northwest winds 10 to 20 kt. Waves 3 to 5 ft.
.TUESDAY...North winds 10 to 20 kt. Waves 2 to 4 ft.

$$

LMZ080-673-675-777-779-874-876-878-311630-
Lake Michigan from Michigan City IN to St. Joseph MI 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 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-
307 AM CST Fri Jan 31 2025

NORTH POINT LIGHT WI TO GRAND HAVEN MI SOUTH...

...DENSE FOG ADVISORY IN EFFECT UNTIL NOON CST TODAY...

.TODAY...Northeast winds 10 to 20 kt increasing to 15 to 25 kt
late this morning, then increasing to 30 kt early this afternoon
becoming north late. Areas of dense fog this morning, then patchy
fog this afternoon. Chance of rain. Waves 1 to 3 ft building to
7 to 10 ft occasionally to 13 ft.
.TONIGHT...North winds to 30 kt becoming northeast 10 to 20 kt.
Waves 7 to 10 ft occasionally to 13 ft subsiding to 6 to 9 ft
occasionally to 12 ft.
.SATURDAY...Northeast winds 10 to 20 kt becoming southeast 15 to
25 kt. Waves 4 to 6 ft occasionally to 8 ft.
.SATURDAY NIGHT...Southeast winds to 30 kt becoming south. Chance
of rain and snow overnight. Waves 6 to 9 ft occasionally to
12 ft.
.SUNDAY...South winds 10 to 20 kt becoming southwest. Waves 5 to
8 ft occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft.
.SUNDAY NIGHT...Southwest winds 10 to 20 kt becoming northwest.
Waves 3 to 5 ft.
.MONDAY...Northwest winds 10 to 20 kt becoming north. Waves 3 to
5 ft.
.TUESDAY...North winds 10 to 20 kt becoming northeast. Waves 2 to
4 ft.

$$

LMZ761-311630-
MAFOR 3111/
MICHIGAN NORTH 11120 11130 11140 12840 12830 11820. Waves 1 to 3
feet building to 5 to 8 feet today. Waves 4 to 7 feet subsiding
to 3 to 6 feet tonight.

MICHIGAN SOUTH 11120 19124 11136 19134 11146 13840 11130 11120.
Waves 1 to 3 feet building to 7 to 10 feet today. Waves 7 to 10
feet subsiding to 5 to 8 feet tonight.

$$
Wood

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

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