062
FZUS63 KMKX 301942
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
242 PM CDT Mon Jun 30 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...

Winds will become westerly and northwesterly tonight into Tuesday
morning behind a cold front. Winds will turn back to the
southwest later Wednesday and Thursday, as weak high pressure of
30.0 inches moves through the Ohio Valley.

LMZ261-362-364-366-563-565-567-868-010315-
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-
242 PM CDT Mon Jun 30 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...Southwest winds 10 to 15 kt becoming west. Slight
chance of showers and thunderstorms this evening. Waves 1 to
2 ft.
.TUESDAY...West winds 10 to 15 kt becoming southwest. Waves 1 to
2 ft.
.TUESDAY NIGHT...Southwest winds 10 to 15 kt. Waves 1 to 2 ft.
.WEDNESDAY...Southwest winds 10 to 20 kt. Waves 1 to 2 ft.
.WEDNESDAY NIGHT...West winds 10 to 20 kt diminishing to 5 to
10 kt overnight. Waves 1 to 2 ft.
.THURSDAY...Northwest winds 5 to 10 kt veering to east 10 to
15 kt. Waves 1 to 2 ft.
.THURSDAY NIGHT...East winds 5 to 10 kt becoming southeast. Waves
1 ft or less.
.FRIDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft.
.SATURDAY...South winds 15 to 25 kt. Chance of showers and
thunderstorms. Waves 4 to 6 ft occasionally to 8 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-010315-
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-
242 PM CDT Mon Jun 30 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...Southwest winds 10 to 15 kt becoming northwest. Slight
chance of showers and thunderstorms this evening. Waves 1 to
2 ft.
.TUESDAY...Northwest winds 10 to 15 kt becoming west late. Waves
1 to 3 ft.
.TUESDAY NIGHT...Southwest winds 5 to 10 kt becoming west. Waves
1 to 2 ft.
.WEDNESDAY...West winds 10 to 15 kt becoming southwest. Waves
1 to 2 ft.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 kt becoming west 5 to
10 kt. Waves 1 to 2 ft.
.THURSDAY...Northwest winds 5 to 10 kt backing to south 10 to
15 kt. Waves 1 to 2 ft.
.THURSDAY NIGHT...Southeast winds 5 to 10 kt becoming south.
Waves 1 to 2 ft.
.FRIDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft.
.SATURDAY...South winds 15 to 25 kt. Chance of showers. Waves
4 to 6 ft occasionally to 8 ft.

$$

LMZ761-010315-
MAFOR 3022/
MICHIGAN NORTH 12510 14610 11610 11510. Waves 2 feet or less.

MICHIGAN SOUTH 11510 12610 14710 11600. Waves 2 feet or less.

$$


Boxell

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

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