359
FZUS63 KMKX 280203
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
903 PM CDT Mon Jul 27 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...

Low pressure around 29.5 inches over central Lake Michigan will
move to the lower Great Lakes by Tuesday morning. The associated
cold front will track southward across Lake Michigan tonight. T
Northerly winds are expected to gust around 30 kt over central and
southern Lake Michigan late tonight through Tuesday. Much lighter
northerly winds are then expected late Tuesday night 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.

LMZ261-362-364-366-563-565-567-868-280930-
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-
903 PM CDT Mon Jul 27 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...North winds 10 to 20 kt increase to 30 kt
overnight. Slight chance of showers and thunderstorms through
late evening. Waves 4 to 7 ft occasionally to 9 ft.
.TUESDAY...North winds to 30 kt. Waves 4 to 7 ft occasionally to
9 ft.
.TUESDAY NIGHT...North winds 15 to 25 kt diminishing to 10 to
15 kt. Waves 3 to 5 ft subsiding to 1 to 3 ft.
.WEDNESDAY...North winds 10 to 20 kt becoming northwest 15 to
25 kt. 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 ft or less.
.FRIDAY...Southwest winds 10 to 15 kt becoming south. Chance of
showers. 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.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-280930-
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-
903 PM CDT Mon Jul 27 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Southwest winds 15 to 25 kt veering to north
to 30 kt overnight. Slight chance of showers and thunderstorms
through late evening. Waves 4 to 6 ft occasionally to 8 ft
building to 6 to 9 ft occasionally to 12 ft.
.TUESDAY...North winds to 30 kt. Waves 7 to 10 ft occasionally to
13 ft.
.TUESDAY NIGHT...North winds to 30 kt diminishing to 10 to 15 kt.
Waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to 6 ft
occasionally to 8 ft.
.WEDNESDAY...North winds 10 to 20 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 ft or less.
.FRIDAY...Southwest winds 10 to 15 kt becoming south. Waves 1 ft
or less.
.SATURDAY...Northeast winds 10 to 15 kt increasing to 10 to
20 kt. Chance of showers. Waves 1 to 2 ft.

$$

LMZ761-280930-
MAFOR 2804/
MICHIGAN NORTH 12840 12830 13840 11830. Waves 3 to 6 feet
overnight and Tuesday. Waves 3 to 5 feet subsiding to 2 to 4 feet
Tuesday evening.

MICHIGAN SOUTH 11530 12840 11830 14840. Waves 3 to 5 feet
building to 5 to 8 feet overnight. Waves 5 to 9 feet Tuesday and
Tuesday evening.

$$


Cronce

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

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