450
FZUS63 KMKX 101405
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
905 AM 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...

The stationary front remains over the far southern portion of the
lake with light variable winds are expected through much of today.
Light and variable winds then persist into Tuesday as high
pressure around 30.0 inches remains in place north of a frontal
boundary parked over the Corn Belt. Otherwise an unsettled weather
pattern has set up over the Upper Great Lakes for the start of
this week where weak waves of low pressure will cross the region
and produce rounds of thunderstorms at times, primarily over the
southern half of Lake Michigan.

LMZ261-362-364-366-563-565-567-868-102115-
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-
905 AM CDT Mon Aug 10 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...North winds 5 to 10 kt backing to southwest.
Waves 1 to 2 ft.
.TONIGHT...Southeast winds 10 to 15 kt becoming east. Waves 1 ft
or less.
.TUESDAY...Southeast winds 5 to 10 kt becoming east. Waves 1 ft
or less.
.TUESDAY NIGHT...Southwest winds 5 to 10 kt becoming west. Waves
1 ft or less.
.WEDNESDAY...Northwest winds 10 to 15 kt becoming west 10 to
20 kt. Chance of showers in the morning. Waves 1 ft or less.
.WEDNESDAY NIGHT...North winds 10 to 20 kt diminishing to 10 to
15 kt. Waves 1 ft or less.
.THURSDAY...North winds 10 to 20 kt. Waves 1 to 2 ft.
.FRIDAY...Northeast winds 10 to 15 kt increasing to 15 to 25 kt.
Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-102115-
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-
905 AM CDT Mon Aug 10 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Northwest winds 5 to 10 kt becoming northeast.
Waves 1 to 2 ft.
.TONIGHT...Northeast winds 5 to 10 kt becoming east. Chance of
showers and thunderstorms in the evening, then chance of showers
and slight chance of thunderstorms overnight. Waves 1 ft or less.
.TUESDAY...Southeast winds 5 to 10 kt becoming south 10 to 15 kt.
Chance of showers. Waves 1 to 2 ft.
.TUESDAY NIGHT...East winds 5 to 10 kt. Waves 1 ft or less.
.WEDNESDAY...North winds 10 to 15 kt becoming northwest. Chance
of showers in the afternoon. Waves 1 ft or less.
.WEDNESDAY NIGHT...North winds 10 to 15 kt. Waves 1 to 2 ft.
.THURSDAY...Northeast winds 10 to 20 kt becoming north. Waves
1 to 2 ft.
.FRIDAY...Northeast winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 2 to 4 ft.

$$

LMZ761-102115-
MAFOR 1016/
MICHIGAN NORTH 11700 11610 11410 11200 11100 11200 12300. Waves 1
foot or less.

MICHIGAN SOUTH 11700 11800 11100 14200 11310. A chance of showers
and thunderstorms this evening, then a chance of showers
overnight. Waves 1 foot or less.

$$


Kuroski

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

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