794
FZUS63 KMKX 150808
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
308 AM CDT Wed Jul 15 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...

High pressure around 30.2 inches over the Midwest and Great Lakes
region will continue to bring dry and warm westerly winds across
Lake Michigan through this morning. A weak area of low pressure
around 29.9 inches will gradually work its way across Lake
Superior and down Lake Michigan through the day pushing the high
pressure out and bringing a northeasterly wind shift across the
Lake later today into Thursday. Will see lighter winds on
Thursday as high pressure around 30.1 inches briefly builds back
in before influence from a low pressure around 29.7 inches
developing over the northern Plains push eastward through the
weekend bringing more southwesterly flow. As a result a cold front
will drag across the Lake resulting in northerly wind shift
toward the end of the weekend. Additionally will see periodic
shower and thunderstorm chances across the lake for the end of the
week through the weekend.

LMZ261-362-364-366-563-565-567-868-151530-
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-
308 AM CDT Wed Jul 15 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...Northwest winds 10 to 15 kt becoming north 10 to 20 kt.
Smoke. Waves 1 to 2 ft.
.TONIGHT...North winds 10 to 20 kt diminishing to 5 to 10 kt.
Smoke. Waves 1 to 2 ft.
.THURSDAY...North winds 5 to 10 kt becoming northwest late in the
morning, then becoming west early in the afternoon becoming
northwest 10 to 20 kt late. Areas of smoke. Waves 1 to 2 ft.
.THURSDAY NIGHT...Northeast winds 10 to 15 kt becoming east 5 to
10 kt. Areas of smoke in the evening. Waves 1 to 2 ft.
.FRIDAY...East winds 10 to 15 kt. Chance of showers. Waves 1 to
2 ft.
.FRIDAY NIGHT...East winds 10 to 15 kt veering to south 10 to
20 kt. Showers likely. Waves 1 to 2 ft building to 1 to 3 ft.
.SATURDAY...West winds 15 to 25 kt veering to north to 30 kt.
Chance of showers and thunderstorms. Waves 3 to 5 ft.
.SUNDAY...Northeast winds 10 to 15 kt backing to southwest 10 to
20 kt. Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-151530-
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-
308 AM CDT Wed Jul 15 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...West winds 10 to 15 kt veering to north 10 to 20 kt.
Patchy smoke this afternoon. Waves 1 to 2 ft.
.TONIGHT...Northeast winds 10 to 15 kt diminishing to 5 to 10 kt.
Smoke. Waves 1 to 3 ft.
.THURSDAY...East winds 5 to 10 kt becoming northeast 10 to 20 kt.
Smoke in the morning, then areas of smoke in the afternoon. Waves
1 to 2 ft.
.THURSDAY NIGHT...Northeast winds 10 to 15 kt becoming east.
Areas of smoke in the evening. Waves 1 to 2 ft.
.FRIDAY...Southeast winds 5 to 10 kt increasing to 10 to 15 kt.
Waves 1 to 2 ft.
.FRIDAY NIGHT...Southwest winds 10 to 15 kt increasing to 10 to
20 kt. Waves 1 to 3 ft.
.SATURDAY...Southwest winds 10 to 20 kt becoming west to 30 kt.
Waves 2 to 4 ft building to 3 to 5 ft.
.SUNDAY...Northeast winds 10 to 15 kt becoming north 10 to 20 kt.
Waves 2 to 4 ft subsiding to 1 to 3 ft.

$$

LMZ761-151530-
MAFOR 1510/
MICHIGAN NORTH 11710 11700 11810 11820 13810 11800. Waves 2 feet
or less.

MICHIGAN SOUTH 11610 11600 11710 13810 11110 11100. Waves 2 feet
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