913
FZUS63 KMKX 022036
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
236 PM CST Mon Mar 2 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...

Low pressure around 29.5 inches will move east into Hudson Bay
today, with high pressure around 30.6 inches moving east through
the northeastern CONUS. This will drive breezy south to southeast
winds across Lake Michigan today, particularly over the northern
third of the lake where gusts to 30 knots are possible. Winds will
subside tonight into Tuesday as both pressure systems depart
eastward, with light and variable winds Tuesday afternoon through
Tuesday night.

Light east to northeast winds develop into Wednesday as weak low
pressure around 29.9 inches develops over the central Great
Plains, tracking northeastward through the middle Mississippi
River Valley. The low will approach and ultimately pass near or
just south of the southern portions of the lake on Thursday. East
to northeast winds will linger. Periods of rain will accompany
the low Wednesday night into Thursday, with a few thunderstorms
possible over southern Lake Michigan Wednesday afternoon and
evening.

Another low pressure system around 29.5 inches will form in the
central Great Plains Thursday night, and is forecast to progress
toward the Upper Mississippi River Valley during the day on
Friday. The approach of the low will bring increasing south to
southeasterly winds to the open waters on Friday, along with
widespread areas of rain and embedded thunderstorms.

The low will move northeast across the region and into Ontario
Friday night through Saturday, dragging a cold front across Lake
Michigan in the process. Additional rain is expected during the
frontal passage. Winds will veer southwest to west as the front
passes.

LMZ261-362-364-366-563-565-567-868-030430-
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-
236 PM CST Mon Mar 2 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...South winds to 30 kt diminishing to 10 to 15 kt. Waves
4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft.
.TUESDAY...South winds 5 to 10 kt becoming southwest. Waves 1 to
3 ft subsiding to 1 to 2 ft.
.TUESDAY NIGHT...Southwest winds 5 to 10 kt. Waves 1 to 2 ft.
.WEDNESDAY...South winds 5 to 10 kt. Waves 1 ft or less.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 kt becoming east.
Waves 1 ft or less.
.THURSDAY...East winds 10 to 20 kt becoming northeast. Chance of
rain. Waves 1 to 3 ft.
.THURSDAY NIGHT...Northeast winds 10 to 20 kt becoming east.
Waves 1 to 3 ft.
.FRIDAY...Southeast winds 10 to 15 kt. Chance of rain. Waves 2 to
4 ft.
.SATURDAY...West winds to 30 kt diminishing to 10 to 20 kt.
Chance of rain. Waves 6 to 9 ft occasionally to 12 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-030430-
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-
236 PM CST Mon Mar 2 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...Southeast winds 10 to 20 kt diminishing to 5 to 10 kt.
Waves 2 to 4 ft subsiding to 1 to 3 ft.
.TUESDAY...Southeast winds 5 to 10 kt backing to northeast.
Slight chance of rain and snow in the morning, then slight chance
of rain in the afternoon. Waves 1 to 2 ft.
.TUESDAY NIGHT...Northeast winds less than 10 kt increasing to
5 to 10 kt. Waves 1 ft or less.
.WEDNESDAY...East winds 5 to 10 kt. Chance of rain in the
afternoon. Waves 1 ft or less.
.WEDNESDAY NIGHT...East winds 5 to 10 kt. Chance of rain. Waves
1 to 2 ft.
.THURSDAY...East winds 10 to 15 kt. Rain likely. Waves 1 to 3 ft.
.THURSDAY NIGHT...North winds 10 to 15 kt. Chance of rain. Waves
1 to 3 ft.
.FRIDAY...Southeast winds 10 to 20 kt becoming south. Chance of
rain. Waves 2 to 4 ft.
.SATURDAY...Southwest winds to 30 kt becoming west 10 to 20 kt.
Chance of rain. Waves 6 to 9 ft occasionally to 12 ft subsiding
to 4 to 7 ft occasionally to 9 ft.

$$

LMZ761-030430-
MAFOR 0223/
MICHIGAN NORTH 11440 11430 11420 11410 12400 11410 11510. Waves 3
to 6 feet subsiding to 1 to 3 feet tonight. Waves 2 feet or less
Tuesday.

MICHIGAN SOUTH 13310 14300 11100. Waves 2 to 4 feet subsiding to
1 to 3 feet tonight. Waves 2 feet or less Tuesday.

$$


Sheppard

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

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