342
FZUS63 KMKX 100855
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
255 AM CST Mon Nov 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...

Strong high pressure of 30.7 inches over the central Great Plains
will continue southeastward today, weakening to 30.5 inches and
arriving at the Gulf coast by tonight. The pressure gradient
between this system and departing low pressure over the
northeastern CONUS remains strong at the moment, driving 25 to 35
knot north winds over the lake. A Gale Warning remains in effect
until 6 AM CST this morning for the southern half of the lake,
after which the winds will turn northwest and remain gusty (just
below Gale Force, but a few gusts to Gale Force remain possible),
turning due west and subsiding for a brief period late tonight.

Potential for a waterspout or two will remain in place today,
along with bands of heavy lake effect snow. Lake effect snow
and waterspout potential subside into Tonight.

Winds turn southwest and accelerate into Tuesday, as a trough of
low pressure around 29.4 inches sags south into Ontario Canada.
Southwest gales are looking likely Tuesday over the south half of
the lake. Winds turn west and remain gusty Tuesday night into
Wednesday as low pressure tracks east through Ontario Canada and
drags a cold front across the lake. These winds may also approach
or reach gale force. Lighter winds expected Thursday as weak high
pressure moves through the region.

LMZ261-362-364-366-563-565-567-868-101645-
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-
255 AM CST Mon Nov 10 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...North winds to 30 kt. Slight chance of waterspouts.
Chance of snow showers this morning, then chance of snow showers,
slight chance of rain showers and weak thunderstorms this
afternoon. Waves 6 to 9 ft occasionally to 12 ft.
.TONIGHT...Northwest winds to 30 kt diminishing to 15 to 25 kt
late in the evening, then diminishing to 10 to 20 kt after
midnight becoming west late. Chance of snow and rain showers in
the evening. Waves 6 to 9 ft occasionally to 12 ft subsiding to
3 to 5 ft.
.TUESDAY...Southwest winds 15 to 25 kt increasing to 30 kt. A few
gusts to gale force possible. Chance of rain and snow showers in
the morning, then chance of rain showers in the afternoon. Waves 4
to 6 ft occasionally to 8 ft building to 7 to 12 ft.
.TUESDAY NIGHT...West winds to 30 kt. Chance of rain overnight.
Waves 8 to 12 ft occasionally to 15 ft subsiding to 7 to 10 ft
occasionally to 13 ft.
.WEDNESDAY...Northwest winds to 30 kt increasing to gales to
35 kt. Chance of rain. Waves 7 to 10 ft occasionally to 13 ft.
.WEDNESDAY NIGHT...Northwest gales to 35 kt diminishing to 30 kt.
Chance of rain. Waves 7 to 10 ft occasionally to 13 ft.
.THURSDAY...West winds 15 to 25 kt. Waves 4 to 6 ft occasionally
to 8 ft subsiding to 3 to 5 ft.
.FRIDAY...East winds 10 to 15 kt increasing to 10 to 20 kt. Waves
2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-101645-
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-
255 AM CST Mon Nov 10 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WARNING IN EFFECT UNTIL 6 AM CST EARLY THIS MORNING...

.TODAY...North winds to 30 kt becoming northwest. Gusts to gale
force this morning, particularly over far southern areas. Chance
of waterspouts. Snow showers likely with a slight chance of
thunderstorms. Slight chances for rain to mix in this afternoon.
Waves 8 to 11 ft occasionally to 14 ft subsiding to 7 to 10 ft
occasionally to 13 ft.
.TONIGHT...Northwest winds to 30 kt becoming west 15 to 25 kt.
Chance of rain showers in the evening. Waves 8 to 11 ft
occasionally to 14 ft subsiding to 6 to 9 ft occasionally to
12 ft.
.TUESDAY...Southwest winds to 30 kt increasing to gales to 40 kt.
Chance of rain and snow showers in the morning, then chance of
rain showers in the afternoon. Waves 5 to 8 ft occasionally to
10 ft building to 12 to 15 ft occasionally to 21 ft.
.TUESDAY NIGHT...West gales to 35 kt. Waves 12 to 15 ft
occasionally to 20 ft.
.WEDNESDAY...West gales to 35 kt. Waves 10 to 14 ft occasionally
to 18 ft.
.WEDNESDAY NIGHT...Northwest gales to 35 kt diminishing to 30 kt.
Waves 10 to 14 ft occasionally to 18 ft subsiding to 8 to 11 ft
occasionally to 14 ft.
.THURSDAY...West 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.
.FRIDAY...Southeast winds 10 to 20 kt. Waves 3 to 5 ft.

$$

LMZ761-101645-
MAFOR 1011/
MICHIGAN NORTH 11840 11737 11740 11840 11740 11730 11720 11620. A
slight chance of waterspouts. A chance of rain showers this
evening. Waves 5 to 9 feet today. Waves 5 to 9 feet subsiding to 3
to 6 feet tonight.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...12847 13747 11740 11730
11630. A chance of waterspouts this morning. A chance of rain
showers this evening. Waves 8 to 11 feet today. Waves 7 to 11
feet subsiding to 4 to 7 feet tonight.

$$

Sheppard

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

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