338
FZUS63 KMKX 121936
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
236 PM CDT Mon Aug 12 2024

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 of 30.0 inches centered over Wisconsin this
afternoon will continue to move eastward through Tuesday allowing
for light and variable winds. Winds will become east to
southeasterly and accelerate on Wednesday as low pressure of 29.7
inches develops across the Central Plains and lifts northeast
towards the Great Lakes, moving through the region on Thursday and
Friday while deepening to 29.5 inches. Shower and thunderstorm
chances exist across Lake Michigan on Thursday and Friday due to
this low. Westerly to northerly winds expected this weekend as the
low departs eastward.

LMZ261-362-364-366-563-565-567-868-130315-
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-
236 PM CDT Mon Aug 12 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...Southwest winds 5 to 10 kt becoming south. Waves 1 ft
or less.
.TUESDAY...Southeast winds less than 10 kt becoming southwest
late in the morning, then increasing to 5 to 10 kt early in the
afternoon increasing to 10 to 15 kt late. Waves 1 ft or less.
.TUESDAY NIGHT...Southwest winds 5 to 10 kt becoming south. Waves
1 ft or less.
.WEDNESDAY...South winds 5 to 10 kt. Waves 1 ft or less.
.WEDNESDAY NIGHT...East winds 5 to 10 kt becoming southeast 10 to
20 kt overnight. Waves 1 ft or less building to 1 to 2 ft.
.THURSDAY...Southeast winds 15 to 25 kt. Chance of showers in the
afternoon. Waves 3 to 5 ft building to 4 to 6 ft occasionally to
8 ft.
.THURSDAY NIGHT...Southeast winds 15 to 25 kt diminishing to
10 to 20 kt. Showers likely with a chance of thunderstorms. Waves
4 to 6 ft occasionally to 8 ft.
.FRIDAY...Southeast winds 10 to 20 kt. Showers likely. Waves 3 to
5 ft.
.SATURDAY...Northwest winds 10 to 20 kt. Chance of showers. Waves
1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-130315-
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-
236 PM CDT Mon Aug 12 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...Southwest winds 5 to 10 kt becoming west. Waves 1 to
2 ft.
.TUESDAY...Northwest winds 5 to 10 kt becoming southwest. Waves
nearly calm.
.TUESDAY NIGHT...Southwest winds 5 to 10 kt backing to southeast.
Waves nearly calm.
.WEDNESDAY...Southeast winds 5 to 10 kt increasing to 10 to
15 kt. Waves 1 to 2 ft.
.WEDNESDAY NIGHT...East winds 10 to 15 kt becoming southeast
10 to 20 kt. Waves 1 to 2 ft building to 1 to 3 ft.
.THURSDAY...Southeast winds 15 to 25 kt increasing to 30 kt.
Chance of showers in the morning, then showers likely with a
chance of thunderstorms in the afternoon. Waves 4 to 6 ft
occasionally to 8 ft.
.THURSDAY NIGHT...Southeast winds 15 to 25 kt becoming south
10 to 20 kt. Showers with a chance of thunderstorms. Waves 4 to
6 ft occasionally to 8 ft.
.FRIDAY...South winds 10 to 20 kt becoming southwest. Chance of
showers. Waves 3 to 5 ft.
.SATURDAY...Northwest winds 10 to 20 kt. Chance of showers. Waves
2 to 4 ft.

$$

LMZ761-130315-
MAFOR 1222/
MICHIGAN NORTH 11400 13500 11300 11400 11500 11510. Waves 1 foot
or less.

MICHIGAN SOUTH 12500 14600 12500. Waves 1 foot or less.

$$


Sheppard

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

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