513
FZUS63 KMKX 051417
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
917 AM CDT Sat Sep 5 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...

Light to modest east northeast winds today and tonight. High
pressure around 30.1 inches will build into the northern Great
Lakes tonight and Sunday and shift to the lower Great Lakes for
Monday. Light and variable winds are forecast for Sunday and
Monday.

LMZ261-362-364-366-563-565-567-868-052130-
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-
917 AM CDT Sat Sep 5 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Northeast winds 10 to 15 kt increasing to 10 to
20 kt. Waves 1 to 3 ft.
.TONIGHT...Northeast winds 10 to 20 kt becoming east 10 to 15 kt
after midnight, then diminishing to 5 to 10 kt late. Waves 2 to
4 ft.
.SUNDAY...East winds 5 to 10 kt becoming northeast. Waves 1 to
3 ft.
.SUNDAY NIGHT...East winds 10 to 15 kt becoming southeast. Waves
1 to 2 ft.
.MONDAY...South winds 5 to 10 kt increasing to 10 to 15 kt. Waves
1 to 2 ft.
.MONDAY NIGHT...Southeast winds 5 to 10 kt increasing to 10 to
20 kt. Waves 1 to 2 ft building to 2 to 4 ft.
.TUESDAY...South winds 15 to 25 kt increasing to 30 kt. Chance of
showers. Waves 4 to 6 ft occasionally to 8 ft building to 5 to
8 ft occasionally to 10 ft.
.WEDNESDAY...Southwest gales to 35 kt becoming west. Waves 5 to
8 ft occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-052130-
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-
917 AM CDT Sat Sep 5 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Northeast winds 10 to 15 kt increasing to 10 to
20 kt. Waves 1 to 3 ft.
.TONIGHT...North winds 10 to 20 kt becoming east 10 to 15 kt.
Waves 2 to 4 ft.
.SUNDAY...East winds 10 to 15 kt becoming northeast. Waves 2 to
4 ft subsiding to 1 to 2 ft.
.SUNDAY NIGHT...Northeast winds 10 to 15 kt becoming southeast.
Waves 1 to 3 ft.
.MONDAY...Southeast winds 10 to 15 kt. Waves 1 to 2 ft.
.MONDAY NIGHT...East winds 10 to 15 kt becoming southeast 10 to
20 kt. Waves 1 to 2 ft building to 2 to 4 ft.
.TUESDAY...South winds 15 to 25 kt increasing to 30 kt. Waves
4 to 7 ft occasionally to 9 ft.
.WEDNESDAY...Southwest winds to 30 kt becoming west. Waves 5 to
8 ft occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft.

$$

LMZ761-052130-
MAFOR 0516/
MICHIGAN NORTH 11110 13120 11210 13200. Waves 2 feet or less this
afternoon. Waves 1 to 3 feet tonight. Waves 2 feet or less Sunday
morning.

MICHIGAN SOUTH 11110 11120 11820 11120 14210. Waves 1 to 3 feet.

$$


Gehring

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

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