188
FZUS63 KMKX 020207
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
907 PM CDT Thu Oct 1 2026

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...

A cold front will work across the waters this evening, bringing a
north-northwest wind shift. 30.2 inch high pressure will move
across Lake Michigan Friday afternoon into Saturday, bringing
light/variable winds. Winds will trend south-southwesterly
Saturday as 29.8 inch low pressure moves toward the Hudson Bay
from the Canadian Prairies. The low will pull a cold front across
the waters Saturday night into Sunday, bringing a west-northwest
wind shift. Northwest winds will continue through the day Monday,
diminishing Monday night as 30.2 inch high pressure moves in from
the northern Great Plains.

A deeper area of 29.4 inch low pressure will build toward the
Hudson Bay Tuesday through Thursday. South-southwest winds will
increase in advance of the approaching low Tuesday afternoon
through Wednesday, becoming gusty at times. While not currently
expected to be widespread, a few gusts could approach gale-force.
Will be monitoring for possible upward trends as this portion of
the period draws closer. The low will pull a cold front across the
waters Wednesday night into Thursday, bringing a northwest wind
shift and scattered rain showers.

LMZ261-362-364-366-563-565-567-868-020915-
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-
907 PM CDT Thu Oct 1 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...North winds 10 to 20 kt. Waves 2 to 4 ft
building to 3 to 5 ft.
.FRIDAY...Northwest winds 10 to 20 kt becoming north 15 to 25 kt.
Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.
.FRIDAY NIGHT...North winds 10 to 20 kt diminishing to 10 to
15 kt late in the evening, then becoming northeast after midnight
becoming east late. Waves 2 to 4 ft subsiding to 1 to 2 ft.
.SATURDAY...Southeast winds 10 to 15 kt becoming south 10 to
20 kt. Waves 2 to 4 ft.
.SATURDAY NIGHT...South winds 10 to 20 kt becoming southwest to
30 kt overnight. Chance of showers overnight. Waves 2 to 4 ft
building to 4 to 7 ft occasionally to 9 ft.
.SUNDAY...West winds to 30 kt becoming northwest. Waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 5 ft.
.SUNDAY NIGHT...Northwest winds to 30 kt diminishing to 15 to
25 kt. Waves 3 to 5 ft.
.MONDAY...Northwest winds 15 to 25 kt. Waves 3 to 5 ft.
.TUESDAY...South winds 10 to 20 kt increasing to 30 kt. Waves
2 to 4 ft building to 4 to 7 ft occasionally to 9 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-020915-
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-
907 PM CDT Thu Oct 1 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...North winds 10 to 20 kt increasing to 15 to
25 kt. Showers late this evening, then chance of showers
overnight. Waves 3 to 5 ft building to 4 to 7 ft occasionally to
9 ft.
.FRIDAY...North winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 4 to 7 ft occasionally to 9 ft.
.FRIDAY NIGHT...North winds 10 to 20 kt veering to east 10 to
15 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft.
.SATURDAY...Southeast winds 10 to 15 kt increasing to 10 to
20 kt. Waves 2 to 4 ft.
.SATURDAY NIGHT...Southeast winds 10 to 20 kt becoming southwest.
Waves 2 to 4 ft building to 3 to 5 ft.
.SUNDAY...West winds 10 to 20 kt becoming northwest. Waves 3 to
5 ft.
.SUNDAY NIGHT...Northwest winds 10 to 20 kt becoming north. Waves
3 to 5 ft.
.MONDAY...North winds 10 to 20 kt. Waves 3 to 5 ft.
.TUESDAY...South winds 10 to 20 kt increasing to 30 kt. Waves
2 to 4 ft building to 4 to 7 ft occasionally to 9 ft.

$$

LMZ761-020915-
MAFOR 0204/
MICHIGAN NORTH 12820 12720 12730 12820. Waves 1 to 3 feet
building to 2 to 4 feet overnight. Waves 3 to 5 feet subsiding to
2 to 4 feet Friday. Waves 1 to 3 feet Friday evening.

MICHIGAN SOUTH 14830 13820 11120. A chance of showers overnight.
Waves 1 to 3 feet building to 3 to 6 feet overnight. Waves 3 to 6
feet Friday and Friday evening.

$$


WFO MKX

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

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