465
FZUS63 KMKX 230203
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
903 PM CDT Thu May 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...

Northerly winds will continue through Saturday morning as low
pressure of 29.7 inches sits over the eastern Great Lakes and
high pressure of 30.2 inches is centered over the Northern
Plains. Winds will become lighter Friday through the weekend as
the high moves overhead while strengthening a bit to 30.3 inches.

LMZ261-362-364-366-563-565-567-868-230930-
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-
903 PM CDT Thu May 22 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Northwest winds 15 to 25 kt. Waves 3 to 5 ft.
.FRIDAY...Northwest winds 15 to 25 kt. Slight chance of rain
showers in the morning. Waves 3 to 5 ft.
.FRIDAY NIGHT...North winds 10 to 20 kt becoming northwest. Waves
2 to 4 ft.
.SATURDAY...Northwest winds 10 to 15 kt increasing to 10 to
20 kt. Waves 1 to 3 ft.
.SATURDAY NIGHT...Northwest winds 10 to 15 kt. Waves 1 to 2 ft.
.SUNDAY...North winds 10 to 15 kt becoming northwest 10 to 20 kt.
Waves 1 to 2 ft.
.SUNDAY NIGHT...North winds 10 to 15 kt diminishing to 5 to
10 kt. Waves 1 to 2 ft.
.MONDAY...North winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 2 ft.
.TUESDAY...Northeast winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-230930-
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-
903 PM CDT Thu May 22 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...North winds 15 to 25 kt becoming northwest
10 to 20 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to
2 to 4 ft.
.FRIDAY...Northwest winds 10 to 20 kt becoming north. Waves 2 to
4 ft.
.FRIDAY NIGHT...North winds 10 to 20 kt diminishing to 10 to
15 kt. Waves 1 to 3 ft.
.SATURDAY...North winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 2 ft.
.SATURDAY NIGHT...North winds 10 to 15 kt diminishing to 5 to
10 kt. Waves 1 to 2 ft.
.SUNDAY...North winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 ft or less building to 1 to 3 ft.
.SUNDAY NIGHT...North winds 10 to 15 kt becoming northeast 5 to
10 kt. Waves 1 to 3 ft.
.MONDAY...Northeast winds 10 to 15 kt becoming north 10 to 20 kt.
Waves 1 to 3 ft.
.TUESDAY...Northeast winds 10 to 15 kt becoming north 10 to
20 kt. Waves 1 to 3 ft.

$$

LMZ761-230930-
MAFOR 2304/
MICHIGAN NORTH 13730 12720 11730 12820. Waves 2 to 4 feet
overnight. Waves 2 to 4 feet subsiding to 1 to 3 feet Friday.
Waves 1 to 3 feet Friday evening.

MICHIGAN SOUTH 11730 13720 14820. Waves 2 to 4 feet subsiding to
1 to 3 feet overnight. Waves 1 to 3 feet Friday. Waves 2 feet or
less Friday evening.

$$


Cronce

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

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