893
FZUS63 KMKX 110153
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
853 PM CDT Mon Aug 10 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...

Continue to see light and variable winds across Lake Michigan as
a stationary front remains in place south of the Lake. This
pattern will continue through midweek with periodic shower and
thunderstorm chances for southern portions of the Lake as small
areas of low pressure follow along the stalled front. The front
finally begins to sag southward through the end of the week
allowing high pressure around 30.2 inches to build down across the
Upper Great Lakes through Friday. Then as the high pressure
pushes east expect low pressure to develop over the Plains and
track across the Great Lakes through the weekend bringing
increasing southerly winds.

LMZ261-362-364-366-563-565-567-868-110915-
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-
853 PM CDT Mon Aug 10 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Southeast winds 5 to 10 kt becoming east.
Patchy fog. Waves 1 ft or less.
.TUESDAY...Southeast winds 5 to 10 kt becoming east. Patchy dense
fog in the morning. Waves 1 ft or less.
.TUESDAY NIGHT...East winds 5 to 10 kt. Patchy dense fog
overnight. Waves 1 ft or less.
.WEDNESDAY...Northeast winds 5 to 10 kt backing to west 10 to
15 kt. Patchy dense fog in the morning. Waves 1 ft or less.
.WEDNESDAY NIGHT...North winds 10 to 15 kt. Waves nearly calm.
.THURSDAY...North winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 2 ft.
.THURSDAY NIGHT...North winds 10 to 20 kt becoming northeast.
Waves 1 to 3 ft.
.FRIDAY...Northeast winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 1 to 3 ft.
.SATURDAY...Southeast winds 15 to 25 kt becoming south. Chance of
showers. Waves 4 to 6 ft occasionally to 8 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-110915-
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-
853 PM CDT Mon Aug 10 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...East winds 5 to 10 kt. Chance of showers and
thunderstorms. Patchy dense fog overnight. Waves 1 ft or less.
.TUESDAY...East winds 5 to 10 kt becoming south. Chance of
showers and slight chance of thunderstorms. Waves 1 to 2 ft.
.TUESDAY NIGHT...Southeast winds 5 to 10 kt. Patchy fog
overnight. Waves 1 ft or less.
.WEDNESDAY...Southeast winds 5 to 10 kt backing to north 10 to
15 kt. Patchy fog in the morning. Waves 1 ft or less.
.WEDNESDAY NIGHT...Northeast winds 10 to 15 kt. Waves 1 ft or
less.
.THURSDAY...Northeast winds 10 to 15 kt becoming north 10 to
20 kt. Waves 1 to 2 ft.
.THURSDAY NIGHT...North winds 10 to 20 kt becoming northeast.
Waves 1 to 3 ft building to 2 to 4 ft.
.FRIDAY...Northeast winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 3 to 5 ft.
.SATURDAY...Southeast winds 15 to 25 kt becoming south. Chance of
showers and thunderstorms. Waves 4 to 6 ft occasionally to 8 ft.

$$

LMZ761-110915-
MAFOR 1104/
MICHIGAN NORTH 11100 12200 11300 11400 13200. Waves 1 foot or
less.

MICHIGAN SOUTH 12200 11200 19204 11310 11316 11410 12300. A
chance of thunderstorms overnight. Waves 1 foot or less.

$$


Wagner

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

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