195
FZUS63 KMKX 061346
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
846 AM CDT Wed Aug 6 2025

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...

Light and variable winds are expected again today as high pressure
lingers in the region. Light southerly winds become established
Thursday as low pressure develops over the northern Great Plains,
with showers and thunderstorms possible later Thursday through
Thursday night. South winds will increase to around 10-20 kt into
Friday, with a few gusts towards 25 kt into Saturday. Additional
chances for showers and thunderstorms are expected Saturday night
through early next week, with south to southwest winds expected
to continue.

LMZ261-362-364-366-563-565-567-868-062115-
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-
846 AM CDT Wed Aug 6 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Southeast winds 5 to 10 kt backing to northeast
10 to 15 kt. Patchy smoke through mid morning. Waves 1 to 2 ft.
.TONIGHT...Northeast winds 10 to 15 kt veering to south. Waves
1 to 2 ft.
.THURSDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft.
.THURSDAY NIGHT...South winds 10 to 15 kt. Chance of showers and
thunderstorms. Waves 1 to 3 ft.
.FRIDAY...South winds 10 to 20 kt. Chance of thunderstorms in the
morning. Waves 1 to 3 ft.
.FRIDAY NIGHT...South winds 10 to 20 kt. Waves 2 to 4 ft.
.SATURDAY...South winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 4 to 6 ft occasionally to 8 ft.
.SUNDAY...Southwest winds 10 to 20 kt becoming south. Chance of
showers. Waves 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-062115-
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-
846 AM CDT Wed Aug 6 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Southeast winds 5 to 10 kt backing to north.
Patchy smoke through mid morning. Waves 1 to 2 ft.
.TONIGHT...Northeast winds 5 to 10 kt veering to south. Waves
1 ft or less.
.THURSDAY...South winds 5 to 10 kt increasing to 10 to 20 kt,
then diminishing to 10 to 15 kt late. Waves 1 to 3 ft.
.THURSDAY NIGHT...South winds 10 to 15 kt. Chance of showers and
thunderstorms overnight. Waves 1 to 3 ft.
.FRIDAY...South winds 10 to 20 kt. Waves 1 to 3 ft.
.FRIDAY NIGHT...South winds 10 to 20 kt. Waves 2 to 4 ft.
.SATURDAY...South winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 3 to 5 ft.
.SUNDAY...South winds 10 to 20 kt. Waves 3 to 5 ft.

$$

LMZ761-062115-
MAFOR 0616/
MICHIGAN NORTH 11310 12110 11210 11310 13410. Waves 2 feet or
less.

MICHIGAN SOUTH 12400 11100 11200 11300 13400. 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