677
FZUS63 KMKX 150201
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
901 PM CDT Mon Jul 14 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...

Light to modest southerly winds will continue tonight into Tuesday
night as high pressure over the northern Ohio Valley slides east
to the Mid Atlantic States. A wave of low pressure around 29.8
inches will then move across central or southern Wisconsin
Wednesday afternoon and cross Lake Michigan into lower Michigan
Wednesday night. Numerous showers and storms will likely occur
with the passage of the low and its cold front.

Modest northerly winds will take hold after the passage of the low
and cold front Wednesday night and continue into Thursday and
possibly Friday.

LMZ261-362-364-366-563-565-567-868-150930-
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-
901 PM CDT Mon Jul 14 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Southwest winds 10 to 15 kt becoming south.
Waves 1 to 3 ft.
.TUESDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 2 to 4 ft.
.TUESDAY NIGHT...South winds 10 to 20 kt becoming southwest 5 to
10 kt. Waves 2 to 4 ft subsiding to 1 to 2 ft.
.WEDNESDAY...West winds 10 to 15 kt veering to northeast. Chance
of showers in the morning, then chance of showers and
thunderstorms in the afternoon. Waves 1 to 2 ft.
.WEDNESDAY NIGHT...North winds 10 to 15 kt increasing to 10 to
20 kt. Showers likely with a chance of thunderstorms in the
evening, then showers likely overnight. Waves 1 to 3 ft.
.THURSDAY...North winds 10 to 20 kt increasing to 15 to 25 kt.
Chance of showers. Waves 3 to 5 ft.
.THURSDAY NIGHT...North winds 10 to 20 kt becoming northeast.
Waves 2 to 4 ft.
.FRIDAY...Northeast winds 10 to 15 kt becoming north. Waves 1 to
3 ft.
.SATURDAY...South winds 10 to 15 kt. Waves 1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-150930-
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-
901 PM CDT Mon Jul 14 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Southeast winds 10 to 15 kt becoming south
5 to 10 kt. Waves 1 to 3 ft.
.TUESDAY...South winds 5 to 10 kt becoming southeast 10 to 20 kt.
Waves 1 to 3 ft.
.TUESDAY NIGHT...Southeast winds 10 to 15 kt becoming south 5 to
10 kt. Waves 1 to 3 ft.
.WEDNESDAY...South winds 10 to 15 kt. Waves 1 to 2 ft.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 kt becoming
northwest. Chance of showers and thunderstorms in the evening,
then showers likely with a chance of thunderstorms overnight.
Waves 1 to 3 ft.
.THURSDAY...Northwest winds 10 to 20 kt becoming north 15 to
25 kt. Chance of showers and thunderstorms. Waves 2 to 4 ft
building to 3 to 5 ft.
.THURSDAY NIGHT...North winds 10 to 20 kt becoming northeast.
Waves 3 to 5 ft.
.FRIDAY...Northeast winds 10 to 15 kt becoming north. Waves 2 to
4 ft.
.SATURDAY...South winds 10 to 15 kt. Chance of showers. Waves
1 to 2 ft.

$$

LMZ761-150930-
MAFOR 1504/
MICHIGAN NORTH 14410 13420 11520. Waves 2 feet or less overnight.
Waves 1 to 3 feet Tuesday and Tuesday evening.

MICHIGAN SOUTH 11410 12400 12410 13310. Waves 2 feet or less.

$$


Cronce

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

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