712
FZUS63 KMKX 160145
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
845 PM CDT Sun Jun 15 2025

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 over eastern Ontario canada will
allow light northeast to east winds (10 kts or less) to continue
overnight. For the northern half of the lake, these winds then
turn south and accelerate to 10 - 15 kts throughout Monday,
leaving mostly light and variable winds elsewhere.

10 to 20 kt south winds overspread the entire lake late Monday
night into early Tuesday (fastest further north) as low pressure
around 29.5 inches crosses southern Ontario, bringing chances for
thunderstorms. Another low pressure around 29.5 inches approaches
from the central Great Plains on Wednesday, with continued
thunderstorm chances. The exact trajectory of this low will
determine Wednesday`s wind field, but for now the best guess is
southerly winds for the south half and easterly winds for the
north half of the lake.

LMZ261-362-364-366-563-565-567-868-160915-
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-
845 PM CDT Sun Jun 15 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Northeast winds 5 to 10 kt veering to south.
Waves 1 ft or less.
.MONDAY...South winds 5 to 10 kt increasing to 10 to 20 kt. Waves
1 to 2 ft.
.MONDAY NIGHT...South winds 10 to 15 kt increasing to 10 to
20 kt. Chance of showers and thunderstorms overnight. Waves 1 to
3 ft.
.TUESDAY...Southwest winds 10 to 20 kt. Chance of showers. Waves
2 to 4 ft.
.TUESDAY NIGHT...South winds 10 to 15 kt becoming southeast 5 to
10 kt. Chance of showers. Waves 1 to 3 ft.
.WEDNESDAY...East winds 10 to 15 kt increasing to 10 to 20 kt.
Showers likely. Waves 1 to 3 ft.
.WEDNESDAY NIGHT...Northeast winds 10 to 20 kt becoming north
10 to 15 kt. Chance of showers. Waves 1 to 3 ft.
.THURSDAY...Northwest winds 10 to 20 kt. Chance of showers. Waves
1 to 2 ft.
.FRIDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 2 ft building to 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-160915-
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-
845 PM CDT Sun Jun 15 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...North winds 10 to 15 kt becoming northeast
late this evening, then becoming east after midnight diminishing
to 5 to 10 kt late. Waves 1 to 2 ft.
.MONDAY...Southeast winds 5 to 10 kt becoming east. Waves 1 to
2 ft.
.MONDAY NIGHT...East winds 10 to 15 kt becoming south. Waves 1 to
2 ft.
.TUESDAY...South winds 10 to 20 kt. Chance of showers in the
afternoon. Waves 1 to 3 ft.
.TUESDAY NIGHT...Southwest winds 10 to 15 kt. Chance of showers
and thunderstorms in the evening, then showers likely with a
chance of thunderstorms overnight. Waves 1 to 3 ft.
.WEDNESDAY...South winds 10 to 20 kt. Showers likely with a
chance of thunderstorms in the morning, then showers with a
chance of thunderstorms in the afternoon. Waves 1 to 3 ft.
.WEDNESDAY NIGHT...West winds 10 to 20 kt. Chance of showers.
Waves 2 to 4 ft.
.THURSDAY...Northwest winds 10 to 20 kt. Waves 2 to 4 ft.
.FRIDAY...Southwest winds 10 to 15 kt becoming south 10 to 20 kt.
Waves 1 to 2 ft building to 1 to 3 ft.

$$

LMZ761-160915-
MAFOR 1604/
MICHIGAN NORTH 11210 11310 12400 14410. Waves 2 feet or less.

MICHIGAN SOUTH 11110 11210 13300 12210 11300. Waves 1 foot or
less.

$$


Sheppard

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

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