503
FZUS63 KMKX 111322
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
822 AM CDT Mon May 11 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 30.4 inches is expected to move from
Lake Superior to over Lake Michigan today. Light to modest north
to northeast winds today should become southeast to south tonight.

Low pressure around 29.7 inches should then move gradually east
southeast across the region Tuesday into Tuesday night. The low
will bring a cold front southeast through the region. Gusty south
to southeast winds are expected ahead of the front Tuesday, with a
few gales possible during a brief period Tuesday afternoon. Winds
then veer west to northwest behind it and remain gusty for
Tuesday night into Wednesday.

High pressure around 30.3 inches should move southeast into the
region Wednesday night into Thursday, bringing lighter winds.
Gusty south winds may then develop Friday.

LMZ261-362-364-366-563-565-567-868-112115-
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-
822 AM CDT Mon May 11 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...North winds 5 to 10 kt increasing to 10 to 15 kt
late this morning, then becoming northwest 10 to 20 kt early this
afternoon backing to south late. Waves 1 to 2 ft.
.TONIGHT...Southeast winds 10 to 15 kt becoming south 10 to
20 kt. Waves 1 to 2 ft.
.TUESDAY...South winds 15 to 25 kt increasing to 30 kt. Rain
showers. Waves 2 to 4 ft building to 8 to 11 ft occasionally to 14
ft.
.TUESDAY NIGHT...Southwest winds 15 to 25 kt becoming northwest
10 to 20 kt. Chance of rain showers. Waves 7 to 10 ft
occasionally to 13 ft subsiding to 4 to 6 ft occasionally to
8 ft.
.WEDNESDAY...Northwest winds to 30 kt. Waves 4 to 6 ft
occasionally to 8 ft.
.WEDNESDAY NIGHT...North winds to 30 kt diminishing to 10 to
20 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft.
.THURSDAY...North winds 10 to 15 kt backing to southwest 10 to
20 kt. Waves 1 to 3 ft.
.FRIDAY...South winds to 30 kt. Chance of rain showers. Waves
4 to 7 ft occasionally to 9 ft building to 6 to 9 ft occasionally
to 12 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-112115-
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-
822 AM CDT Mon May 11 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Northeast winds 10 to 20 kt becoming north.
Waves 2 to 4 ft.
.TONIGHT...Northeast winds 10 to 20 kt diminishing to 10 to 15 kt
late in the evening, then becoming southeast 5 to 10 kt after
midnight increasing to 10 to 15 kt late. Waves 1 to 3 ft
subsiding to 1 to 2 ft.
.TUESDAY...South winds 10 to 20 kt increasing to gales to 30 kt.
Chance of rain showers. Waves 1 to 3 ft building to 7 to 10 ft
occasionally to 13 ft.
.TUESDAY NIGHT...Southwest winds to 30 kt becoming west 15 to
25 kt. Chance of rain showers in the evening. Waves 6 to 9 ft
occasionally to 12 ft subsiding to 4 to 6 ft occasionally to
8 ft.
.WEDNESDAY...Northwest winds to 30 kt becoming north. Waves 5 to
8 ft occasionally to 10 ft.
.WEDNESDAY NIGHT...North winds to 30 kt diminishing to 10 to
20 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
6 ft occasionally to 8 ft.
.THURSDAY...North winds 10 to 20 kt. Waves 2 to 4 ft subsiding to
1 to 3 ft.
.FRIDAY...South winds to 30 kt. Chance of rain showers. Waves
4 to 7 ft occasionally to 9 ft building to 6 to 9 ft occasionally
to 12 ft.

$$

LMZ761-112115-
MAFOR 1116/
MICHIGAN NORTH 11810 11520 11410 12300 11410 11426 11446. Waves 2
feet or less this afternoon and tonight. Waves 1 to 3 feet
building to 3 to 5 feet Tuesday morning.

MICHIGAN SOUTH 12820 11120 11110 11200 11310 11420 11446. Waves 1
to 3 feet subsiding to 1 foot or less this afternoon and tonight.
Waves 1 to 3 feet building to 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