802
FZUS63 KMKX 220827
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
327 AM CDT Sat Mar 22 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...

High pressure of 30.1 inches will slide southeast from just north
of Minnesota to east of the upper Great Lakes by tonight. Breezy
north winds will continue this morning with gusts just shy of gale
force, until winds ease through the post-dawn hours of the morning
as the surface low moves overhead. Winds will flip to
southeasterly this evening.

Low pressure of 29.4 inches will approach as the high pressure
exits east and gusty southeasterly winds will begin early Sunday
morning and continue through most of Sunday. Winds are expected to
stop just short of gales at this time in the warm advection
regime. An occluded front and acold front is expected to pass
Sunday night into Monday bringing winds around to westerly. The
cold advection regime behind these boundaries may cause gales
during the first half of Monday.

LMZ261-362-364-366-563-565-567-868-221515-
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-
327 AM CDT Sat Mar 22 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...North winds to 30 kt becoming northwest 10 to 15 kt.
Freezing spray this morning. Chance of snow this morning, then
slight chance of snow this afternoon. Waves 6 to 9 ft
occasionally to 12 ft subsiding to 2 to 4 ft.
.TONIGHT...South winds 5 to 10 kt becoming southeast to 30 kt.
Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.
.SUNDAY...Southeast winds to 30 kt. Chance of snow in the
morning, then rain and snow in the afternoon. Waves 6 to 9 ft
occasionally to 12 ft building to 8 to 11 ft occasionally to
14 ft.
.SUNDAY NIGHT...South winds to 30 kt veering to west. Snow with
rain likely in the evening, then chance of snow and rain
overnight. Waves 7 to 10 ft occasionally to 13 ft.
.MONDAY...Northwest winds to 30 kt. Chance of snow. Waves 5 to
8 ft occasionally to 10 ft.
.MONDAY NIGHT...Northwest winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to
4 ft.
.TUESDAY...Northwest winds 10 to 20 kt diminishing to 10 to
15 kt. Waves 1 to 3 ft.
.WEDNESDAY...Northwest winds 10 to 15 kt becoming southwest 10 to
20 kt. Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-221515-
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-
327 AM CDT Sat Mar 22 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...North winds to 30 kt becoming northeast 10 to 20 kt.
Waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to 6 ft
occasionally to 8 ft.
.TONIGHT...East winds 10 to 15 kt becoming southeast 10 to 20 kt,
then increasing to 30 kt late. Waves 3 to 5 ft building to 4 to
6 ft occasionally to 8 ft.
.SUNDAY...Southeast winds to 30 kt becoming south. Rain. Waves
6 to 9 ft occasionally to 12 ft building to 8 to 11 ft
occasionally to 14 ft.
.SUNDAY NIGHT...Southwest winds to 30 kt becoming west. Chance of
rain in the evening, then chance of snow overnight. Waves 7 to
10 ft occasionally to 13 ft.
.MONDAY...West winds to 30 kt. Chance of snow in the morning.
Waves 7 to 10 ft occasionally to 13 ft.
.MONDAY NIGHT...Northwest winds 15 to 25 kt diminishing to 10 to
15 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 3 to
5 ft.
.TUESDAY...Northwest winds 10 to 15 kt becoming north. Waves 2 to
4 ft.
.WEDNESDAY...Northwest winds 10 to 15 kt becoming west. Waves
1 to 3 ft.

$$

LMZ761-221515-
MAFOR 2210/
MICHIGAN NORTH 11840 11830 11720 11710 11410 11310 11420 11430. A
chance of snow this morning. Waves 6 to 9 feet subsiding to 2 to
4 feet today. Waves 1 to 3 feet building to 2 to 4 feet tonight.

MICHIGAN SOUTH 11840 11830 12820 11110 11310 11320 11330. Waves 5
to 9 feet subsiding to 3 to 5 feet today. Waves 2 to 4 feet
tonight.

$$


CMiller

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

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