265
FZUS63 KMKX 071404
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
904 AM CDT Mon Sep 7 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...

High pressure around 30.2 inches will allow for light and variable
winds this morning through this evening. Meanwhile, low pressure
around 29.8 inches over the northern High Plains this morning will
deepen to 29.5 inches as it lifts northward through the Canadian
Prairies into Tuesday morning. This will allow for gradually
increasing southeasterly winds late tonight through Tuesday. Gusts
around 30 kt are expected across the northern half Tuesday
afternoon through Tuesday night. As low pressure enters the
Hudson Bay Tuesday night, winds shift southwesterly, then westerly
on Wednesday as a cold front pushes southeastward through the
Lake. Winds become northwesterly behind the front, gradually
weakening through Thursday and Thursday night. Winds shift to
southerly again and increase into Friday as low pressure develops
in the northern Plains.

LMZ261-362-364-366-563-565-567-868-072115-
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-
904 AM CDT Mon Sep 7 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...South winds 10 to 15 kt becoming southwest.
Waves 1 to 2 ft.
.TONIGHT...South winds 5 to 10 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft building to 2 to 4 ft.
.TUESDAY...South winds 10 to 20 kt increasing to 30 kt. Chance of
showers in the afternoon. Waves 4 to 6 ft occasionally to 8 ft.
.TUESDAY NIGHT...South winds to 30 kt becoming southwest. Showers
in the evening, then showers with a chance of thunderstorms
overnight. Waves 4 to 6 ft occasionally to 8 ft.
.WEDNESDAY...Southwest winds to 30 kt increasing to gales to
35 kt. Chance of showers in the morning. Waves 4 to 7 ft
occasionally to 9 ft.
.WEDNESDAY NIGHT...West winds to 30 kt becoming northwest. Waves
4 to 6 ft occasionally to 8 ft.
.THURSDAY...Northwest winds 15 to 25 kt. Waves 2 to 4 ft.
.FRIDAY...Southwest winds to 30 kt becoming south gales to 35 kt.
Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-072115-
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-
904 AM CDT Mon Sep 7 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Southeast winds 10 to 15 kt becoming east. Waves
1 to 2 ft.
.TONIGHT...East winds 10 to 15 kt becoming southeast 10 to 20 kt.
Waves 1 to 2 ft building to 3 to 5 ft.
.TUESDAY...South winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 4 to 6 ft occasionally to 8 ft.
.TUESDAY NIGHT...South winds 15 to 25 kt becoming southwest.
Chance of showers in the evening, then showers overnight. Waves
4 to 6 ft occasionally to 8 ft.
.WEDNESDAY...Southwest winds 15 to 25 kt increasing to 30 kt.
Showers in the morning. Waves 4 to 7 ft occasionally to 9 ft.
.WEDNESDAY NIGHT...West winds to 30 kt becoming northwest. Waves
4 to 6 ft occasionally to 8 ft.
.THURSDAY...Northwest winds 10 to 20 kt. Waves 3 to 5 ft.
.FRIDAY...Southwest winds 15 to 25 kt becoming south to 30 kt.
Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.

$$

LMZ761-072115-
MAFOR 0716/
MICHIGAN NORTH 11400 11500 11400 11300 11310 12420 11430. Waves 2
feet or less this afternoon. Waves 2 feet or less building to 2
to 4 feet tonight. Waves 3 to 5 feet Tuesday morning.

MICHIGAN SOUTH 11310 11200 12210 13320 11420. Waves 2 feet or
less this afternoon. Waves 1 to 3 feet building to 2 to 4 feet
tonight. Waves 3 to 5 feet Tuesday morning.

$$


Gehring

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

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