651
FZUS63 KMKX 020142
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
842 PM CDT Tue Jul 1 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 southwest winds are expected through tonight as weak high
pressure around 30.0 inches builds over the Middle Mississippi
Valley. Light southwest winds continue through Wednesday evening.
Light and variable winds under high pressure on Thursday should
become south on Friday and increase into Saturday, as a warm
front pushes north through the region.

There will be chances for thunderstorms at times Wednesday
afternoon and evening, as well as Thursday evening and night. More
widespread chances for showers and thunderstorms expected late
Saturday into Saturday night as a cold front and low pressure
system cross the lake.

LMZ261-362-364-366-563-565-567-868-020915-
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-
842 PM CDT Tue Jul 1 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Southwest winds 10 to 15 kt. Waves 1 to 2 ft.
.WEDNESDAY...West winds 10 to 15 kt becoming southwest. Chance of
showers and slight chance of thunderstorms in the afternoon.
Waves 1 to 2 ft.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 kt becoming northwest
5 to 10 kt. Chance of showers in the evening. Waves 1 to 2 ft.
.THURSDAY...North winds 5 to 10 kt becoming northeast 10 to
15 kt. Waves 1 ft or less.
.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.
.FRIDAY NIGHT...South winds 10 to 20 kt becoming southwest. Waves
2 to 4 ft.
.SATURDAY...South winds 15 to 25 kt increasing to 30 kt. Waves
3 to 5 ft.
.SUNDAY...Southwest winds 10 to 20 kt becoming west. Chance of
showers. Waves 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-020915-
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-
842 PM CDT Tue Jul 1 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Southwest winds 10 to 15 kt becoming west 5 to
10 kt. Waves 1 to 2 ft.
.WEDNESDAY...West winds 5 to 10 kt becoming southwest 10 to
15 kt. Waves 1 to 2 ft.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 kt becoming northwest
5 to 10 kt. Waves 1 to 2 ft.
.THURSDAY...Northwest winds 5 to 10 kt backing to southeast 10 to
15 kt. Waves 1 ft or less.
.THURSDAY NIGHT...Southeast winds 5 to 10 kt becoming south.
Waves 1 ft or less.
.FRIDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft.
.FRIDAY NIGHT...South winds 10 to 15 kt becoming southwest 10 to
20 kt. Waves 2 to 4 ft.
.SATURDAY...South winds 15 to 25 kt. Waves 3 to 5 ft.
.SUNDAY...Southwest winds 10 to 20 kt becoming west. Chance of
showers. Waves 3 to 5 ft.

$$

LMZ761-020915-
MAFOR 0204/
MICHIGAN NORTH 12510 11600 11610 14510. A chance of showers
Wednesday afternoon and Wednesday evening. Waves 2 feet or less.

MICHIGAN SOUTH 11510 13600 13510 11500. Waves 2 feet or less.

$$


MH

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

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