510
FZUS63 KMKX 281947
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
247 PM CDT Tue Jul 28 2026

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...

Breezy north winds will remain across the central and southern
portions of the lake through this evening. Winds will diminish
tonight into Wednesday as high pressure around 30.0 inches
building into the Great lakes Region from Ontario. Light
southwest wind will develop Thursday through Friday as the high
pressure moves east toward the Mid Atlantic States.

LMZ261-362-364-366-563-565-567-868-290330-
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-
247 PM CDT Tue Jul 28 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...North winds to 30 kt diminishing to 5 to 10 kt. Waves
3 to 5 ft subsiding to 1 to 2 ft.
.WEDNESDAY...North winds 5 to 10 kt increasing to 10 to 15 kt
late in the morning, then backing to west 10 to 20 kt early in
the afternoon becoming southwest late. Waves 1 to 2 ft.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 kt diminishing to
5 to 10 kt. Waves 1 to 2 ft.
.THURSDAY...South winds 10 to 15 kt. Waves 1 to 2 ft.
.THURSDAY NIGHT...South winds 10 to 15 kt becoming southwest 5 to
10 kt. Waves 1 to 2 ft.
.FRIDAY...Southwest winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 2 ft.
.FRIDAY NIGHT...Southwest winds 10 to 15 kt veering to northeast.
Chance of showers. Waves 1 to 2 ft.
.SATURDAY...Northeast winds 10 to 15 kt becoming north 10 to
20 kt. Waves 1 to 3 ft.
.SUNDAY...Northeast winds 10 to 20 kt increasing to 30 kt. Waves
2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-290330-
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-
247 PM CDT Tue Jul 28 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...North winds to 30 kt diminishing to 10 to 15 kt. Waves
6 to 9 ft occasionally to 12 ft subsiding to 3 to 5 ft.
.WEDNESDAY...North winds 10 to 15 kt increasing to 10 to 20 kt
early in the afternoon, then becoming northwest 15 to 25 kt late.
Waves 2 to 4 ft.
.WEDNESDAY NIGHT...Northwest winds 10 to 20 kt diminishing to
5 to 10 kt. Waves 2 to 4 ft subsiding to 1 to 2 ft.
.THURSDAY...West winds 5 to 10 kt becoming south. Waves 1 to
2 ft.
.THURSDAY NIGHT...South winds 10 to 15 kt becoming southwest.
Waves 1 to 2 ft.
.FRIDAY...South winds 10 to 15 kt becoming southeast. Chance of
showers in the afternoon. Waves 1 to 2 ft.
.FRIDAY NIGHT...East winds 10 to 15 kt increasing to 10 to 20 kt.
Showers likely. Waves 1 to 3 ft.
.SATURDAY...East winds 10 to 20 kt becoming northeast 15 to
25 kt. Chance of showers. Waves 1 to 3 ft.
.SUNDAY...Northeast winds 15 to 25 kt becoming north to 30 kt.
Waves 2 to 4 ft.

$$

LMZ761-290330-
MAFOR 2822/
MICHIGAN NORTH 11840 12820 11810 11800 11810 11620 11520. Waves 3
to 5 feet subsiding to 1 to 3 feet tonight. Waves 2 feet or less
Wednesday.

MICHIGAN SOUTH 12840 11830 13810 11820 11730. Waves 5 to 9 feet
subsiding to 3 to 5 feet tonight. Waves 1 to 3 feet Wednesday.

$$


Patterson

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

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