898
FZUS63 KMKX 281357
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
857 AM CDT Sat Jun 28 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...

Light south to southeast winds are expected as weak high pressure
around 30.0 inches over Lake Michigan will move east today. Winds
will increase slightly tonight through Sunday as high pressure
exits and low pressure around 29.6 inches moves east from
Saskatchewan. As this low moves through the northern Great Lakes
Region Monday, a cold front will move east across the lake with
winds shifting to the west. Showers and some thunderstorms may
accompany the frontal passage. The west winds should linger into
the middle of next week.

LMZ261-362-364-366-563-565-567-868-282130-
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-
857 AM CDT Sat Jun 28 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...West winds 10 to 15 kt becoming south 10 to
20 kt. Waves 1 to 3 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.
.SUNDAY...South winds 10 to 20 kt. Chance of showers. Waves 2 to
4 ft.
.SUNDAY NIGHT...Southwest winds 10 to 20 kt diminishing to 10 to
15 kt. Chance of showers and thunderstorms in the evening, then
showers likely with a chance of thunderstorms overnight. Waves
2 to 4 ft.
.MONDAY...Southwest winds 10 to 15 kt increasing to 10 to 20 kt.
Chance of showers and thunderstorms in the morning, then chance
of showers in the afternoon. Waves 1 to 2 ft.
.MONDAY NIGHT...West winds 10 to 15 kt. Waves 1 to 3 ft.
.TUESDAY...West winds 10 to 20 kt becoming southwest. Waves 1 to
3 ft.
.WEDNESDAY...West winds 10 to 20 kt becoming southwest. Waves
1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-282130-
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-
857 AM CDT Sat Jun 28 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Northwest winds 5 to 10 kt veering to southeast
10 to 15 kt. Waves 1 to 2 ft.
.TONIGHT...Southeast winds 5 to 10 kt becoming south 10 to 15 kt.
Waves 1 to 2 ft.
.SUNDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft.
.SUNDAY NIGHT...South winds 10 to 20 kt becoming southwest 10 to
15 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft.
.MONDAY...Southwest winds 10 to 15 kt becoming west. Showers
likely with a chance of thunderstorms in the morning, then chance
of showers in the afternoon. Waves 1 to 2 ft.
.MONDAY NIGHT...West winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft.
.TUESDAY...Northwest winds 10 to 20 kt becoming west. Waves 1 to
3 ft.
.WEDNESDAY...West winds 10 to 15 kt becoming southwest. Waves
1 to 2 ft.

$$

LMZ761-282130-
MAFOR 2816/
MICHIGAN NORTH 11510 11520 13410 11420 11410 11420. A chance of
showers and thunderstorms overnight. A chance of showers Sunday
morning. Waves 2 feet or less this afternoon and tonight. Waves 1
to 3 feet Sunday morning.

MICHIGAN SOUTH 11600 12310 11300 12400 12410. Waves 2 feet or
less.

$$


Patterson

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

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