665
FZUS63 KMKX 151503
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
903 AM CST Sat Nov 15 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 southwest to west winds will become northwest this
afternoon, as low pressure around 29.3 inches drags a cold front
across the lake. The gusty northwest winds are expected to
continue into Sunday.

Wind gusts around 30 knots are expected during this period, with
a few gale force gusts possible in the northern third of the open
waters, as well as along the eastern lakeshore areas. Still do not
have high enough confidence for gusts exceeding gale force for
extended period, thus will continue to hold off on gale headlines
at this time.

Winds begin to ease Sunday night through Monday, as high pressure
around 30.1 inches builds into the Upper Midwest. Another low
pressure system around 29.9 inches is expected to track from the
Central Plains to south of Lake Michigan through the middle of
next week.

LMZ261-362-364-563-152230-
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 Rock Island Passage to Sturgeon Bay WI-
903 AM CST Sat Nov 15 2025

STURGEON BAY WI TO POINT BETSIE MI NORTH...

.REST OF TODAY...Southwest winds 10 to 20 kt becoming west 15 to
25 kt late this morning, then becoming northwest to 30 kt early
this afternoon. A few gales to 35 kt late. Chance of rain through
mid morning, then slight chance of rain this afternoon. Waves 3
to 5 ft building to 4 to 7 ft occasionally to 9 ft.
.TONIGHT...Northwest winds to 30 kt. A few gales to 35 kt. Chance
of rain in the evening, then chance of rain and snow overnight.
Waves 6 to 9 ft occasionally to 12 ft.
.SUNDAY...Northwest winds to 30 kt. A few gales to 35 kt. Chance
of snow. Waves 6 to 9 ft occasionally to 12 ft subsiding to 5 to 8
ft occasionally to 10 ft.
.SUNDAY NIGHT...Northwest winds to 30 kt. Chance of snow in the
evening. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6
ft occasionally to 8 ft.
.MONDAY...Northwest winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 3 to 5 ft subsiding to 2 to 4 ft.
.MONDAY NIGHT...Northwest winds 10 to 20 kt becoming north 5 to
10 kt. Waves 1 to 3 ft subsiding to 1 to 2 ft.
.TUESDAY...North winds 5 to 10 kt becoming northeast 10 to 15 kt.
Waves 1 ft or less.
.WEDNESDAY...Southeast winds 10 to 15 kt becoming south. Waves
1 ft or less.

$$

LMZ366-565-567-868-152230-
Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to
Mid Lake-
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-
903 AM CST Sat Nov 15 2025

STURGEON BAY WI TO POINT BETSIE MI SOUTH TO SHEBOYGAN WI TO
PENTWATER MI...

.REST OF TODAY...Southwest winds 10 to 20 kt becoming west late
this morning, then becoming northwest 15 to 25 kt early this
afternoon increasing to 30 kt late. Slight chance of rain through
mid morning. Waves 4 to 6 ft occasionally to 8 ft.
.TONIGHT...Northwest winds to 30 kt. Waves 7 to 10 ft
occasionally to 13 ft.
.SUNDAY...Northwest winds to 30 kt. Waves 7 to 10 ft occasionally
to 13 ft.
.SUNDAY NIGHT...Northwest winds to 30 kt diminishing to 15 to
25 kt. Waves 5 to 8 ft occasionally to 10 ft.
.MONDAY...Northwest winds 10 to 20 kt. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft.
.MONDAY NIGHT...Northwest winds 5 to 10 kt becoming north. Waves
1 to 2 ft.
.TUESDAY...Northeast winds 10 to 15 kt. Waves 1 to 3 ft.
.WEDNESDAY...Southeast winds 5 to 10 kt. Waves 1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-152230-
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-
903 AM CST Sat Nov 15 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Southwest winds to 30 kt veering to northwest
15 to 25 kt. Slight chance of rain. Waves 4 to 7 ft occasionally
to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.TONIGHT...Northwest winds to 30 kt. Waves 4 to 7 ft occasionally
to 9 ft building to 10 to 14 ft occasionally to 18 ft.
.SUNDAY...Northwest winds to 30 kt. Waves 10 to 14 ft
occasionally to 18 ft subsiding to 8 to 11 ft occasionally to
14 ft.
.SUNDAY NIGHT...Northwest winds to 30 kt diminishing to 15 to
25 kt. Waves 8 to 11 ft occasionally to 14 ft subsiding to 7 to
10 ft occasionally to 13 ft.
.MONDAY...Northwest winds 10 to 20 kt diminishing to 10 to 15 kt.
Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft.
.MONDAY NIGHT...Northeast winds 5 to 10 kt veering to east 10 to
20 kt. Chance of rain. Waves 1 to 3 ft.
.TUESDAY...East winds 10 to 20 kt. Chance of rain. Waves 3 to
5 ft.
.WEDNESDAY...East winds 10 to 15 kt becoming southeast. Waves
1 to 3 ft.

$$

LMZ761-152230-
MAFOR 1517/
MICHIGAN NORTH 11740 15740 11740. A chance of rain this evening,
then a chance of snow overnight. A chance of snow Sunday morning.
Waves 3 to 6 feet this afternoon. Waves 4 to 7 feet building to 6
to 9 feet tonight. Waves 6 to 9 feet Sunday morning.

MICHIGAN SOUTH 11630 11730 15740. Waves 3 to 6 feet this
afternoon. Waves 4 to 7 feet building to 9 to 12 feet tonight.
Waves 9 to 12 feet Sunday morning.

$$
Wood

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

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