434
FZUS63 KMKX 240839
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
339 AM CDT Tue Jun 24 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...

A cold front will gradually stall across the southern end of Lake
Michigan this morning. Scattered showers will linger through the
early morning hours, mainly over the middle third of the lake.

The front is expected to stick around through Thursday, waffling
back and forth from north to south over the southern third of the
lake. As a result, winds will be modest, and generally northerly
to northeasterly throughout the week. South winds may return on
Thursday over the southern portions of the lake, as the front
briefly lifts north ahead of approaching low pressure. With the
presence of the front, multiple rounds of showers and
thunderstorms are expected at times.

LMZ261-362-364-366-563-565-567-868-241515-
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-
339 AM CDT Tue Jun 24 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...West winds 10 to 15 kt veering to north 10 to 20 kt.
Chance of showers and slight chance of thunderstorms this
morning, then slight chance of showers and thunderstorms this
afternoon. Waves 1 to 3 ft.
.TONIGHT...North winds 10 to 20 kt. Slight chance of showers.
Waves 1 to 3 ft.
.WEDNESDAY...Northeast winds 10 to 20 kt diminishing to 10 to
15 kt. Chance of showers. Waves 1 to 3 ft.
.WEDNESDAY NIGHT...Northeast winds 10 to 15 kt becoming east.
Chance of showers in the evening, then showers likely with a
chance of thunderstorms overnight. Waves 1 to 2 ft.
.THURSDAY...East winds 10 to 20 kt becoming northeast. Chance of
showers in the morning, then showers likely in the afternoon.
Waves 1 to 3 ft.
.THURSDAY NIGHT...East winds 10 to 20 kt becoming southeast.
Showers likely with a chance of thunderstorms. Waves 1 to 3 ft.
.FRIDAY...Southwest winds 10 to 20 kt becoming west. Chance of
showers and thunderstorms. Waves 1 to 3 ft.
.SATURDAY...Northwest winds 5 to 10 kt backing to southwest 10 to
15 kt. Waves 1 ft or less.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-241515-
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-
339 AM CDT Tue Jun 24 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...Southwest winds 10 to 15 kt veering to north. Slight
chance of showers and thunderstorms this morning, then chance of
showers and thunderstorms this afternoon. Waves 1 to 2 ft.
.TONIGHT...North winds 10 to 20 kt. Chance of showers and
thunderstorms. Waves 1 to 3 ft.
.WEDNESDAY...North winds 10 to 20 kt diminishing to 10 to 15 kt.
Chance of showers. Waves 1 to 3 ft.
.WEDNESDAY NIGHT...Northeast winds 10 to 15 kt becoming southeast
5 to 10 kt. Chance of showers in the evening, then chance of
showers and thunderstorms overnight. Waves 1 to 3 ft.
.THURSDAY...Southeast winds 5 to 10 kt becoming east 10 to 15 kt.
Chance of showers in the morning, then chance of showers and
thunderstorms in the afternoon. Waves 1 to 2 ft.
.THURSDAY NIGHT...Southeast winds 10 to 15 kt becoming south.
Chance of showers and thunderstorms. Waves 1 to 3 ft.
.FRIDAY...Southwest winds 10 to 20 kt. Chance of showers. Waves
1 to 3 ft.
.SATURDAY...Northwest winds 5 to 10 kt backing to south. Waves
1 ft or less.

$$

LMZ761-241515-
MAFOR 2410/
MICHIGAN NORTH 11610 11710 14820 11120 11820. A chance of showers
this morning. Waves 2 feet or less.

MICHIGAN SOUTH 12510 11700 14810 11820. A chance of showers and
thunderstorms this afternoon and tonight. Waves 2 feet or less.

$$


CMiller

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

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