238
FZUS63 KMKX 161411
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
911 AM CDT Mon Jun 16 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 well east of the region will
combine with low pressure around 29.8 inches over the northern
Plains to bring southerly winds today. Winds will turn
increasingly breezy, particularly on the north side of the lake
this evening into Tuesday, as the low crosses the northern Great
Lakes region. This will bring chances for thunderstorms.

Another low pressure system around 29.5 inches will approach the
region from the central Great Plains on Wednesday, with continued
thunderstorm chances. The exact trajectory of this low will
determine winds on Wednesday, but for now, southerly winds are
forecast for the south half of the lake and easterly winds for
the north half.

LMZ261-362-364-366-563-565-567-868-162115-
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-
911 AM CDT Mon Jun 16 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...South winds 5 to 10 kt increasing to 10 to
15 kt. Waves 1 to 2 ft.
.TONIGHT...South winds 10 to 15 kt increasing to 10 to 20 kt.
Chance of showers and thunderstorms overnight. Waves 1 to 3 ft.
.TUESDAY...South winds 10 to 20 kt becoming southwest. Waves 2 to
4 ft.
.TUESDAY NIGHT...South winds 10 to 15 kt becoming southeast 5 to
10 kt. Chance of showers overnight. Waves 1 to 3 ft.
.WEDNESDAY...East winds 10 to 15 kt increasing to 10 to 20 kt.
Chance of showers in the morning, then showers likely in the
afternoon. Waves 1 to 2 ft building to 1 to 3 ft.
.WEDNESDAY NIGHT...Northeast winds 10 to 20 kt becoming north
10 to 15 kt. Chance of showers and thunderstorms. Waves 1 to
3 ft.
.THURSDAY...Northwest winds 10 to 20 kt. Chance of showers. Waves
1 to 3 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.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-162115-
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-
911 AM CDT Mon Jun 16 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Southeast winds 5 to 10 kt. Waves 1 to 2 ft.
.TONIGHT...Southeast winds 10 to 15 kt becoming south. Chance of
showers and slight chance of thunderstorms overnight. Waves 1 to
2 ft.
.TUESDAY...Southwest winds 10 to 15 kt becoming south. Chance of
showers in the morning. Waves 1 to 3 ft.
.TUESDAY NIGHT...Southwest winds 5 to 10 kt increasing to 10 to
15 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft.
.WEDNESDAY...South winds 10 to 20 kt. Showers with a chance of
thunderstorms. Waves 1 to 2 ft building to 1 to 3 ft.
.WEDNESDAY NIGHT...West winds 10 to 20 kt. Chance of showers and
thunderstorms. Waves 2 to 4 ft.
.THURSDAY...Northwest winds 10 to 20 kt. Waves 1 to 3 ft.
.FRIDAY...Southwest winds 10 to 15 kt becoming south 10 to 20 kt.
Waves 1 to 3 ft.

$$

LMZ761-162115-
MAFOR 1616/
MICHIGAN NORTH 14410 11410 12420 11520. A chance of showers and
thunderstorms overnight. Waves 2 feet or less this afternoon and
tonight. Waves 1 to 3 feet Tuesday morning.

MICHIGAN SOUTH 11400 11300 12310 12410 12510. A chance of showers
overnight and Tuesday morning. Waves 2 feet or less.

$$
Wood

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

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