588
FZUS63 KMKX 281306
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
806 AM 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...

Northerly winds are expected to gust around 30 kt over central
and southern Lake Michigan today behind a departing cold front.
Much lighter northerly winds are then expected late tonight into
Wednesday as high pressure around 30.0 inches builds into the
northern Great Lakes. The high will maintain light winds for
Thursday and Friday as well, but winds will take on a more
southerly direction.

LMZ261-362-364-366-563-565-567-868-282115-
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-
806 AM CDT Tue Jul 28 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...North winds 15 to 25 kt increasing to 30 kt.
Waves 4 to 7 ft occasionally to 9 ft.
.TONIGHT...North winds 15 to 25 kt diminishing to 10 to 15 kt.
Waves 4 to 6 ft occasionally to 8 ft subsiding to 1 to 3 ft.
.WEDNESDAY...North winds 10 to 15 kt increasing to 10 to 20 kt
late in the morning, then becoming northwest 15 to 25 kt early in
the afternoon becoming west late. Waves 1 to 3 ft.
.WEDNESDAY NIGHT...South winds 10 to 20 kt diminishing to 5 to
10 kt overnight. Waves 1 to 2 ft subsiding to nearly calm.
.THURSDAY...South winds 10 to 15 kt. Waves 1 to 2 ft.
.THURSDAY NIGHT...South winds 10 to 15 kt diminishing to 5 to
10 kt. Waves 1 to 2 ft.
.FRIDAY...Southwest winds 10 to 15 kt becoming south. Waves 1 ft
or less.
.SATURDAY...Northeast winds 10 to 15 kt becoming north 10 to
20 kt. Waves 1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-282115-
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-
806 AM CDT Tue Jul 28 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...North winds to 30 kt. Waves 6 to 9 ft
occasionally to 12 ft building to 8 to 11 ft occasionally to
14 ft.
.TONIGHT...North gales to 35 kt diminishing to 10 to 15 kt. Waves
8 to 11 ft occasionally to 14 ft subsiding to 4 to 6 ft
occasionally to 8 ft.
.WEDNESDAY...North winds 10 to 15 kt increasing to 15 to 25 kt.
Waves 3 to 5 ft.
.WEDNESDAY NIGHT...North winds 10 to 20 kt becoming northwest
5 to 10 kt overnight. Waves 3 to 5 ft subsiding to 1 to 3 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 5 to
10 kt. Waves 1 to 2 ft.
.FRIDAY...Southwest winds 10 to 15 kt becoming south. Waves 1 ft
or less.
.SATURDAY...Northeast winds 10 to 15 kt becoming north 10 to
20 kt. Chance of showers. Waves 1 to 2 ft.

$$

LMZ761-282115-
MAFOR 2816/
MICHIGAN NORTH 13840 11830 11820 13810. Waves 3 to 6 feet this
afternoon. Waves 3 to 5 feet subsiding to 1 to 3 feet tonight.
Waves 2 feet or less Wednesday morning.

MICHIGAN SOUTH 12840 11850 11840 11830 13810. Waves 5 to 9 feet
building to 7 to 10 feet this afternoon. Waves 8 to 11 feet
subsiding to 3 to 5 feet tonight. Waves 2 to 4 feet subsiding to
1 to 3 feet Wednesday morning.

$$


Patterson

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

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