606
FZUS63 KMKX 241356
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
856 AM CDT Fri Jul 24 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...

South winds will increase across Lake Michigan as low pressure
around 29.5 inches tracks from the Canadian Great Plains toward
Quebec through Saturday. Southerly gusts up to 30 knots are
expected over the north half of the lake. The low will pull a cold
front into the western Great Lakes on Saturday, with the boundary
slowly advancing southeast across the region Saturday night. This
will result in increasing thunderstorm chances across the
northern two thirds of the lake. The front then becomes stationary
through the middle of next week, with switches between northerly
and southerly winds possible at times. Additional rounds of storms
are possible, and some may become severe.

LMZ261-362-364-366-563-565-567-868-242130-
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-
856 AM CDT Fri Jul 24 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Southwest winds 10 to 15 kt becoming south 15 to
25 kt. Waves 1 to 3 ft building to 2 to 4 ft.
.TONIGHT...South winds 15 to 25 kt becoming southwest. Waves 3 to
5 ft.
.SATURDAY...Southwest winds 15 to 25 kt becoming south to 30 kt.
Waves 3 to 5 ft.
.SATURDAY NIGHT...Southwest winds 15 to 25 kt diminishing to
10 to 15 kt overnight. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.SUNDAY...Southwest winds 10 to 15 kt becoming south 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 20 kt becoming west. Chance of
showers and thunderstorms. Waves 2 to 4 ft.
.TUESDAY...North winds 15 to 25 kt increasing to 30 kt. Waves
3 to 5 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-242130-
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-
856 AM CDT Fri Jul 24 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Southwest winds 5 to 10 kt becoming south 10 to
20 kt early this afternoon. Waves 1 to 2 ft building to 2 to 4
ft.
.TONIGHT...South winds 10 to 20 kt becoming southwest 10 to
15 kt. Waves 2 to 4 ft.
.SATURDAY...Southwest winds 10 to 20 kt becoming south 15 to
25 kt. Waves 3 to 5 ft.
.SATURDAY NIGHT...South winds 10 to 20 kt becoming southwest
10 to 15 kt. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.SUNDAY...Southwest winds 10 to 15 kt becoming south 10 to 20 kt.
Waves 1 to 3 ft.
.SUNDAY NIGHT...Southwest winds 10 to 20 kt diminishing to 10 to
15 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft.
.MONDAY...Southwest winds 10 to 20 kt. Chance of showers and
thunderstorms. Waves 2 to 4 ft.
.TUESDAY...North winds 15 to 25 kt increasing to 30 kt. Waves
4 to 6 ft occasionally to 8 ft.

$$

LMZ761-242130-
MAFOR 2416/
MICHIGAN NORTH 12420 13430 13530. Waves 1 to 3 feet this
afternoon. Waves 2 to 4 feet tonight and Saturday morning.

MICHIGAN SOUTH 14420 11420 12510 11520. Waves 1 to 3 feet.

$$


Cronce

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

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