487
FZUS63 KMKX 271944
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
244 PM CDT Sun Sep 27 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...

High pressure of 30.1 inches will remain overhead through at least
Monday, keeping the weather dry and winds on the lighter side
early this week.

Breezy southerly winds are expected Tuesday into Thursday, as high
pressure departs to the east ahead of an approaching trough. Wind
gusts to 25 knots are possible along with building waves,
particularly across central and northern portions of the lake.

LMZ261-362-364-366-563-565-567-868-280315-
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-
244 PM CDT Sun Sep 27 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...Northwest winds 10 to 15 kt becoming north. Waves 1 to
2 ft.
.MONDAY...North winds 5 to 10 kt becoming northwest. Waves 1 ft
or less.
.MONDAY NIGHT...Northwest winds 5 to 10 kt backing to south.
Waves 1 ft or less.
.TUESDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 2 ft building to 2 to 4 ft.
.TUESDAY NIGHT...South winds 10 to 20 kt. Chance of showers
overnight. Waves 3 to 5 ft.
.WEDNESDAY...South winds 15 to 25 kt increasing to 30 kt. Chance
of showers. Waves 4 to 7 ft occasionally to 9 ft.
.WEDNESDAY NIGHT...South winds 15 to 25 kt becoming southwest.
Showers likely. Waves 4 to 6 ft occasionally to 8 ft subsiding to
3 to 5 ft.
.THURSDAY...Southwest winds 15 to 25 kt becoming northwest to
30 kt. Chance of showers. Waves 3 to 5 ft.
.FRIDAY...Northwest winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 3 to 5 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-280315-
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-
244 PM CDT Sun Sep 27 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...North winds 10 to 15 kt diminishing to 5 to 10 kt.
Waves 1 to 3 ft.
.MONDAY...North winds 5 to 10 kt increasing to 10 to 15 kt. Waves
1 to 2 ft.
.MONDAY NIGHT...North winds 10 to 15 kt becoming northeast late
in the evening, then becoming south after midnight becoming south
less than 10 kt late. Waves 1 to 2 ft.
.TUESDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 2 ft building to 2 to 4 ft.
.TUESDAY NIGHT...South winds 10 to 20 kt. Chance of showers
overnight. Waves 3 to 5 ft.
.WEDNESDAY...South winds 15 to 25 kt. Chance of showers. Waves
4 to 7 ft occasionally to 9 ft.
.WEDNESDAY NIGHT...South winds 15 to 25 kt diminishing to 10 to
20 kt. Chance of showers. Waves 4 to 6 ft occasionally to 8 ft.
.THURSDAY...Southwest winds 15 to 25 kt becoming west. Showers
likely. Waves 4 to 6 ft occasionally to 8 ft.
.FRIDAY...North winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 4 to 7 ft occasionally to 9 ft.

$$

LMZ761-280315-
MAFOR 2722/
MICHIGAN NORTH 11710 11810 14800 11800 11710. Waves 1 foot or
less.

MICHIGAN SOUTH 14810 11800 11100 11800 11810. Waves 2 feet or
less.

$$


DDV

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

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