983
FZUS63 KMKX 170800
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
300 AM CDT Tue Jun 17 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...

Low pressure around 29.5 inches will cross Lake Superior early
this morning, and high pressure around 29.8 inches will settle
into the Upper Midwest on today. Low pressure of 29.6 inches will
cross eastern Iowa Wednesday morning and reach central Lower
Michigan by Wednesday evening while strengthening to 29.4 inches.
High pressure of 30.0 inches will set up over the Plains Thursday,
with the top of the ridge over Lake Superior and northern Lake
Michigan.

Expect breezy southerly winds early this morning with highest
gusts over the north half of Lake Michigan. Winds will become
lighter and shift west later today. Lighter and variable
conditions will return Wednesday, then become westerly Thursday.
While showers and thunderstorms are possible through much of the
week, the time period with the best chance for storms is later
this evening through Thursday morning.

LMZ261-362-364-366-563-565-567-868-171530-
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-
300 AM CDT Tue Jun 17 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...South winds to 30 kt becoming southwest 10 to 20 kt.
Slight chance of showers and thunderstorms this morning. Waves
2 to 4 ft.
.TONIGHT...Southwest winds 10 to 15 kt becoming south. Slight
chance of showers and thunderstorms overnight. Waves 1 to 3 ft
subsiding to 1 to 2 ft.
.WEDNESDAY...Southeast winds 5 to 10 kt becoming east 10 to
15 kt, then becoming northeast 10 to 20 kt late. Chance of
showers in the morning, then showers likely in the afternoon.
Waves 1 to 2 ft.
.WEDNESDAY NIGHT...Northeast winds 10 to 20 kt becoming north.
Chance of showers. Waves 1 to 3 ft.
.THURSDAY...West winds 10 to 20 kt becoming southwest. Waves 1 to
3 ft.
.THURSDAY NIGHT...West winds 10 to 20 kt becoming northwest 10 to
15 kt. Chance of showers. Waves 1 to 2 ft.
.FRIDAY...North winds 10 to 15 kt veering to south 10 to 20 kt.
Chance of showers. Waves 1 to 3 ft.
.SATURDAY...South winds 15 to 25 kt. Chance of showers and
thunderstorms. Waves 4 to 7 ft occasionally to 9 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-171530-
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-
300 AM CDT Tue Jun 17 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...South winds 10 to 20 kt. Slight chance of showers and
thunderstorms. Waves 1 to 3 ft.
.TONIGHT...Southwest winds 10 to 15 kt diminishing to 5 to 10 kt.
Chance of showers and thunderstorms in the evening, then chance
of showers and slight chance of thunderstorms overnight. Waves
1 to 3 ft.
.WEDNESDAY...South winds 5 to 10 kt increasing to 10 to 20 kt.
Showers likely in the morning, then showers with a chance of
thunderstorms in the afternoon. Waves 1 to 3 ft.
.WEDNESDAY NIGHT...Southwest winds 10 to 20 kt becoming west.
Chance of showers and thunderstorms in the evening, then chance
of showers overnight. Waves 2 to 4 ft.
.THURSDAY...West winds 10 to 20 kt becoming southwest. Waves 2 to
4 ft.
.THURSDAY NIGHT...Southwest winds 10 to 15 kt becoming west.
Waves 1 to 3 ft.
.FRIDAY...Northwest winds 10 to 15 kt backing to south 10 to
20 kt. Waves 1 to 3 ft.
.SATURDAY...South winds 15 to 25 kt. Waves 4 to 7 ft occasionally
to 9 ft.

$$

LMZ761-171530-
MAFOR 1710/
MICHIGAN NORTH 11430 11540 11530 11520 11510 11500 12400. A
chance of showers and thunderstorms early this morning. Waves 1
to 3 feet building to 2 to 4 feet, then subsiding to 1 to 3 feet
today. Waves 2 feet or less tonight.

MICHIGAN SOUTH 14420 11410 12510 11500. A chance of showers and
thunderstorms this evening, then a chance of showers overnight.
Waves 2 feet or less.

$$


Kuroski

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

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