792
FZUS63 KMKX 261951
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
251 PM CDT Sun Jul 26 2026

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...

Patchy dense fog is expected in portions of the central to
northern Lake Michigan through tonight and potentially Monday as
warm moist air moves northward.

Severe storms are possible tonight within that warm air mass
across Lake Michigan. Waterspouts, very strong winds, and hail are
possible with these storms. Storms will move north to south
across the lake late tonight. Monday, expecting a cold front to
progress north to south across the lake in the afternoon hours.
This will bring the next chances for severe weather, with strong
winds and hail the main threats. Northerly winds are expected
behind the front, with gusts around 30 kt expected. Gusts to gale
force cannot be ruled out as low pressure deepens to 29.5 inches
over the eastern Great Lakes Tuesday. Winds will remain northerly
through Wednesday as high pressure around 30.0 inches builds into
the northern Great Lakes, then will become lighter and more
variable into Thursday and Friday as high pressure builds
overhead.

LMZ261-362-364-366-563-565-567-868-270330-
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-
251 PM CDT Sun Jul 26 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...South winds 10 to 20 kt diminishing to 10 to 15 kt.
Patchy fog. Chance of showers and slight chance of thunderstorms.
Waves 1 to 3 ft.
.MONDAY...Southwest winds 10 to 15 kt backing to northeast 10 to
20 kt. Chance of showers and slight chance of thunderstorms.
Waves 2 to 4 ft.
.MONDAY NIGHT...North winds 10 to 20 kt increasing to 30 kt.
Chance of showers in the evening. Waves 2 to 4 ft building to
4 to 6 ft occasionally to 8 ft.
.TUESDAY...North winds to 30 kt. Waves 4 to 7 ft occasionally to
9 ft.
.TUESDAY NIGHT...North winds to 30 kt diminishing to 10 to 20 kt
overnight. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft.
.WEDNESDAY...North winds 10 to 20 kt increasing to 30 kt in the
afternoon. Waves 1 to 3 ft.
.WEDNESDAY NIGHT...East winds 15 to 25 kt veering to south 5 to
10 kt. Waves 1 to 2 ft.
.THURSDAY...South winds 5 to 10 kt increasing to 10 to 20 kt.
Waves 1 ft or less.
.FRIDAY...Southwest winds 10 to 15 kt becoming south 10 to 20 kt.
Chance of showers. Waves 1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-270330-
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-
251 PM CDT Sun Jul 26 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...South winds 10 to 20 kt becoming southwest 10 to
15 kt. Patchy dense fog this evening. Chance of showers this
evening, then chance of showers and thunderstorms overnight.
Waves 1 to 3 ft.
.MONDAY...Southwest winds 10 to 20 kt becoming south. Showers
likely with a chance of thunderstorms in the morning, then slight
chance of showers and thunderstorms in the afternoon. Waves 2 to
4 ft.
.MONDAY NIGHT...Southwest winds 10 to 20 kt veering to northwest
late in the evening, then becoming north to 30 kt overnight.
Chance of showers and thunderstorms in the evening. Waves 2 to
4 ft building to 5 to 8 ft occasionally to 10 ft.
.TUESDAY...North winds to 30 kt. Waves 6 to 9 ft occasionally to
12 ft building to 8 to 11 ft occasionally to 14 ft.
.TUESDAY NIGHT...North gales to 35 kt diminishing to 10 to 20 kt
overnight. Waves 8 to 11 ft occasionally to 14 ft subsiding to
5 to 8 ft occasionally to 10 ft.
.WEDNESDAY...North winds 10 to 20 kt increasing to 30 kt in the
afternoon. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.WEDNESDAY NIGHT...North winds 15 to 25 kt becoming northeast
5 to 10 kt. Waves 2 to 4 ft.
.THURSDAY...Southeast winds 5 to 10 kt becoming south. Waves 1 to
2 ft.
.FRIDAY...Southwest winds 10 to 15 kt becoming south. Waves 1 to
2 ft.

$$

LMZ761-270330-
MAFOR 2622/
MICHIGAN NORTH 11420 13410 12510 11520 11320. A chance of
showers. Waves 2 feet or less tonight. Waves 1 to 3 feet Monday.

MICHIGAN SOUTH 14410 11516 11520 12420. A chance of thunderstorms
overnight and Monday morning. Waves 2 feet or less tonight. Waves
1 to 3 feet Monday.

$$


MH

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

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