009
FZUS63 KMKX 200208
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
908 PM CDT Sat Apr 19 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...

The high pressure around 30.5 inches will linger and strengthen
tonight over the central Great Lakes before it shifts eastward
Sunday as low pressure of 29.5 inches lifts into the area from the
southern Plains. Expect increasing east to northeasterly winds to
develop Sunday as Lake Michigan sits in between the departing
high and an approaching low. The low will lift across the northern
half of the lake on Monday, with winds turning westerly across
the lake as it departs. Gusts to around 30 knots are expected, but
some gales can not be ruled out, especially over the western
portions of the lake.

LMZ261-362-364-366-563-565-567-868-200915-
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-
908 PM CDT Sat Apr 19 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Northeast winds 10 to 20 kt becoming east.
Waves 1 to 3 ft.
.SUNDAY...East winds 10 to 15 kt becoming northeast 10 to 20 kt.
Waves 1 to 2 ft.
.SUNDAY NIGHT...East winds 10 to 20 kt increasing to 30 kt.
Chance of rain showers in the evening, then rain showers
overnight. Waves 2 to 4 ft building to 4 to 7 ft occasionally to
9 ft.
.MONDAY...Southeast winds to 30 kt veering to southwest. Rain
showers in the morning, then rain showers likely in the
afternoon. Waves 6 to 9 ft occasionally to 12 ft.
.MONDAY NIGHT...West winds to 30 kt becoming northwest. Waves
5 to 8 ft occasionally to 10 ft subsiding to 3 to 5 ft.
.TUESDAY...Northwest winds 15 to 25 kt backing to southwest 10 to
15 kt in the afternoon. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.TUESDAY NIGHT...Southeast winds 5 to 10 kt becoming east 10 to
15 kt. Chance of rain showers. Waves 1 to 2 ft.
.WEDNESDAY...South winds 10 to 15 kt. Waves 1 to 3 ft.
.THURSDAY...East winds 10 to 15 kt becoming northeast. Waves 1 to
2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-200915-
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-
908 PM CDT Sat Apr 19 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Southeast winds 5 to 10 kt becoming east after
midnight, then becoming 10 to 20 kt late. Waves 1 to 3 ft.
.SUNDAY...East winds 10 to 20 kt. Chance of rain showers in the
afternoon. Waves 2 to 4 ft.
.SUNDAY NIGHT...East winds 15 to 25 kt becoming southeast to
30 kt. Rain showers likely in the evening, then rain showers
overnight. Waves 4 to 6 ft occasionally to 8 ft building to 5 to
8 ft occasionally to 10 ft.
.MONDAY...South winds to 30 kt becoming southwest. Chance of rain
showers. Waves 6 to 9 ft occasionally to 12 ft.
.MONDAY NIGHT...West winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 3 to
5 ft.
.TUESDAY...Northwest winds 10 to 15 kt veering to southeast.
Waves 2 to 4 ft subsiding to 1 to 2 ft.
.TUESDAY NIGHT...East winds 5 to 10 kt becoming southeast 10 to
15 kt. Chance of rain showers. Waves 1 to 2 ft.
.WEDNESDAY...Southwest winds 10 to 15 kt becoming south. Waves
1 to 3 ft.
.THURSDAY...East winds 10 to 15 kt. Waves 1 to 3 ft.

$$

LMZ761-200915-
MAFOR 2004/
MICHIGAN NORTH 11110 13210 11100 11110 11120 11226. Waves 2 feet
or less overnight and Sunday. Waves 1 to 3 feet Sunday evening.

MICHIGAN SOUTH 11210 14220 11220 11230 11236. Waves 2 feet or
less overnight. Waves 1 to 3 feet Sunday. Waves 3 to 5 feet
Sunday evening.

$$


Kuroski

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

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