422
FZUS63 KMKX 140153
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
853 PM CDT Fri Jun 13 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 30.3 inches along the Ontario and Quebec
border will keep winds primarily northeasterly through the
weekend. Weak low pressure around 29.9 inches will develop in
Missouri tonight, moving into the Ohio River Valley and weakening
into Sunday. Chances for showers and thunderstorms are forecast at
times Monday into next week, as the Ontario high pressure system
weakens and low pressure approaches the region from the Central
Plains.

LMZ261-362-364-366-563-565-567-868-140915-
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-
853 PM CDT Fri Jun 13 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Northeast winds 10 to 20 kt. Chance of
showers. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4
ft.
.SATURDAY...Northeast winds 10 to 20 kt. Slight chance of showers
in the morning. Waves 1 to 3 ft.
.SATURDAY NIGHT...Northeast winds 10 to 20 kt diminishing to
10 to 15 kt late in the evening, then becoming east 5 to 10 kt
overnight. Waves 1 to 3 ft.
.SUNDAY...East winds 5 to 10 kt becoming northeast 10 to 15 kt.
Waves 1 ft or less.
.SUNDAY NIGHT...East winds 10 to 15 kt veering to south 5 to
10 kt. Chance of showers. Waves 1 ft or less.
.MONDAY...South winds 10 to 15 kt. Chance of showers. Waves 1 to
2 ft.
.MONDAY NIGHT...South winds 5 to 10 kt. Chance of showers and
thunderstorms. Waves 1 to 2 ft.
.TUESDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Chance of showers. Waves 1 to 3 ft.
.WEDNESDAY...Southeast winds 10 to 20 kt becoming south. Showers
likely. Waves 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-140915-
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-
853 PM CDT Fri Jun 13 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Northeast winds 10 to 20 kt becoming east.
Chance of showers through early evening, then slight chance of
showers overnight. Waves 3 to 5 ft.
.SATURDAY...Northeast winds 10 to 20 kt becoming north 10 to
15 kt. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.SATURDAY NIGHT...North winds 10 to 15 kt becoming east 5 to
10 kt. Waves 1 to 3 ft.
.SUNDAY...East winds 5 to 10 kt becoming north 10 to 15 kt. Waves
1 to 2 ft.
.SUNDAY NIGHT...Northeast winds 5 to 10 kt veering to southeast.
Waves 1 ft or less.
.MONDAY...South winds 10 to 15 kt. Waves 1 to 2 ft.
.MONDAY NIGHT...South winds 5 to 10 kt. Chance of showers. Waves
1 to 2 ft.
.TUESDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Chance of showers. Waves 1 to 3 ft.
.WEDNESDAY...South winds 10 to 20 kt becoming southwest. Showers
likely with a chance of thunderstorms. Waves 2 to 4 ft.

$$

LMZ761-140915-
MAFOR 1404/
MICHIGAN NORTH 11230 15120 11110. A chance of showers overnight.
Waves 3 to 5 feet subsiding to 1 to 3 feet overnight. Waves 1 to
3 feet Saturday. Waves 2 feet or less Saturday evening.

MICHIGAN SOUTH 12220 12120 11110 12810 11110. A chance of showers
late this evening. Waves 2 to 4 feet overnight. Waves 2 to 4 feet
subsiding to 1 to 3 feet Saturday. Waves 1 to 2 feet Saturday
evening.

$$


Gehring

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

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