725
FZUS63 KMKX 101851
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
151 PM CDT Thu Sep 10 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 near 30.1 inches will linger through tonight across
the open waters, bringing light and variable winds. A new area of
low pressure near 30.0 inches will shift from central Canada
toward the Hudson Bay Friday morning through the day Saturday,
bringing increasing south-southwest winds followed by a west-
northwest wind shift behind a cold front. Occasional wind gusts
near gale force are possible during this time frame, though
whether or not they will be widespread enough to warrant headlines
remains uncertain. Trends will continue to be monitored through
the end of this week. Scattered showers and storms will accompany
the approaching/passing front, with widespread severe weather not
currently anticipated.

High pressure near 30.1 inches will shift from the northern Great
Plains across Lake Michigan Saturday night through Sunday night,
bringing light and variable winds. The next area of low pressure &
cold front will approach from the west early next week, bringing
increasing winds & additional chances for showers and storms.
Depending on the strength of the low and front, periods of gales &
some stronger storms could be possible. Will be providing
additional details as this portion of the period draws closer.

LMZ261-362-364-366-563-565-567-868-110315-
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-
151 PM CDT Thu Sep 10 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...South winds 10 to 15 kt becoming southwest 10 to
20 kt. Waves 1 to 3 ft.
.FRIDAY...Southwest winds 10 to 20 kt becoming south to 30 kt.
Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.
.FRIDAY NIGHT...South winds to 30 kt. Waves 4 to 7 ft
occasionally to 9 ft.
.SATURDAY...Southwest winds to 30 kt. Chance of showers. Waves
4 to 6 ft occasionally to 8 ft.
.SATURDAY NIGHT...Northwest winds 10 to 20 kt. Waves 4 to 6 ft
occasionally to 8 ft.
.SUNDAY...Northwest winds 10 to 20 kt. Waves 4 to 6 ft
occasionally to 8 ft.
.SUNDAY NIGHT...North winds 15 to 25 kt becoming northeast 10 to
20 kt. Waves 4 to 6 ft occasionally to 8 ft.
.MONDAY...East winds 15 to 25 kt becoming southeast gales to
35 kt. Chance of showers. Waves 4 to 6 ft occasionally to 8 ft.
.TUESDAY...Southwest gales to 35 kt becoming west gales to 35 kt.
Chance of showers. Waves 4 to 6 ft occasionally to 8 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-110315-
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-
151 PM CDT Thu Sep 10 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...Northeast winds 10 to 15 kt veering to southeast.
Waves 1 to 2 ft.
.FRIDAY...South winds 10 to 15 kt increasing to 15 to 25 kt.
Waves 2 to 4 ft.
.FRIDAY NIGHT...Southeast winds 15 to 25 kt becoming south 10 to
20 kt. Waves 3 to 5 ft.
.SATURDAY...Southwest winds 15 to 25 kt. Waves 4 to 6 ft
occasionally to 8 ft.
.SATURDAY NIGHT...West winds 10 to 20 kt becoming northwest.
Waves 3 to 5 ft.
.SUNDAY...North winds 10 to 20 kt. Waves 3 to 5 ft.
.SUNDAY NIGHT...North winds 10 to 20 kt becoming northeast. Waves
3 to 5 ft.
.MONDAY...East winds to 30 kt becoming southeast gales to 35 kt.
Chance of showers. Waves 3 to 5 ft.
.TUESDAY...Southwest gales to 35 kt becoming west to 30 kt.
Chance of showers. Waves 3 to 5 ft.

$$

LMZ761-110315-
MAFOR 1022/
MICHIGAN NORTH 11420 11400 11410 13520 11530 11440. Waves 1 to 3
feet tonight. Waves 1 to 3 feet building to 3 to 5 feet Friday.

MICHIGAN SOUTH 11110 11200 11300 11310 12410 11420 11430. Waves 2
feet or less tonight. Waves 1 to 3 feet building to 2 to 4 feet
Friday.

$$


Quigley

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

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