433
FZUS63 KMKX 031958
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
258 PM CDT Thu Apr 3 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...

Developing high pressure around 30.3 inches begins to build in
from the west today into tonight. Gusty west to southwest winds
have begun to decrease with gales ending across the far northern
parts of the lake. Lighter winds are expected Friday under the
high, as it strengthens to 30.4 inches. Breezy winds are expected
at times over the weekend as low pressure and a cold front swing
through the region.

LMZ261-362-364-366-563-565-567-868-040315-
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-
258 PM CDT Thu Apr 3 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...West winds 10 to 20 kt becoming northwest late this
evening, then diminishing to 5 to 10 kt after midnight becoming
north late. Waves 3 to 5 ft subsiding to 1 to 2 ft.
.FRIDAY...North winds 5 to 10 kt becoming northeast. Waves 1 to
2 ft.
.FRIDAY NIGHT...Northeast winds 10 to 15 kt becoming east 5 to
10 kt. Chance of rain showers overnight. Waves 1 to 2 ft.
.SATURDAY...North winds 10 to 20 kt becoming northwest. Waves
2 to 4 ft.
.SATURDAY NIGHT...North winds 15 to 25 kt becoming northwest
10 to 20 kt. Waves 1 to 3 ft.
.SUNDAY...Northwest winds 10 to 20 kt becoming west. Waves 1 to
3 ft.
.SUNDAY NIGHT...Southwest winds 10 to 20 kt veering to north.
Waves 1 to 3 ft building to 2 to 4 ft.
.MONDAY...North winds 15 to 25 kt increasing to 30 kt. Chance of
snow showers. Waves 3 to 5 ft building to 4 to 7 ft occasionally
to 9 ft.
.TUESDAY...Northwest winds 10 to 20 kt. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-040315-
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-
258 PM CDT Thu Apr 3 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...West winds 10 to 15 kt veering to northeast. Waves
2 to 4 ft subsiding to 1 ft or less.
.FRIDAY...Northeast winds 10 to 15 kt. Slight chance of rain
showers in the afternoon. Waves 1 to 3 ft.
.FRIDAY NIGHT...Northeast winds 10 to 20 kt. Chance of rain
showers in the evening, then rain showers overnight. Waves 2 to
4 ft.
.SATURDAY...North winds 10 to 20 kt. Chance of rain showers.
Waves 4 to 6 ft occasionally to 8 ft.
.SATURDAY NIGHT...North winds 10 to 20 kt. Waves 4 to 6 ft
occasionally to 8 ft.
.SUNDAY...North winds 10 to 20 kt. Waves 3 to 5 ft.
.SUNDAY NIGHT...South winds 10 to 15 kt becoming southwest 10 to
20 kt. Waves 2 to 4 ft.
.MONDAY...West winds 15 to 25 kt becoming north. Chance of snow
showers. Waves 4 to 6 ft occasionally to 8 ft building to 5 to
8 ft occasionally to 10 ft.
.TUESDAY...Northwest winds 10 to 20 kt. Waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 5 ft.

$$

LMZ761-040315-
MAFOR 0322/
MICHIGAN NORTH 11630 11620 11710 11700 11800 11100 11200 11100.
Waves 3 to 5 feet subsiding to 1 foot or less tonight. Waves 1
foot or less Friday.

MICHIGAN SOUTH 11610 11700 11800 12110 11210 12110. Waves 2 to 4
feet subsiding to 1 foot or less tonight. Waves 2 feet or less
Friday.

$$


Kuroski

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

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