540
FZUS63 KMKX 150153
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
853 PM CDT Tue Jul 14 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 Wednesday 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 Wednesday
pushing the high pressure out and bringing a northeasterly wind
shift across the Lake later Wednesday 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.

LMZ261-362-364-366-563-565-567-868-150915-
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 Tue Jul 14 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Southwest winds 10 to 20 kt veering to
northwest. Patchy smoke overnight. Waves 2 to 4 ft.
.WEDNESDAY...Northwest winds 10 to 15 kt becoming north 10 to
20 kt. Smoke. Waves 1 to 3 ft.
.WEDNESDAY NIGHT...North winds 10 to 20 kt diminishing to 5 to
10 kt. Smoke. Waves 1 to 2 ft.
.THURSDAY...North winds 10 to 15 kt increasing to 10 to 20 kt.
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 increasing to 10 to 20 kt. Waves
1 to 2 ft.
.FRIDAY NIGHT...East winds 10 to 15 kt becoming south 10 to
20 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft.
.SATURDAY...Southwest winds 15 to 25 kt veering to northwest.
Chance of showers and thunderstorms. Waves 2 to 4 ft.
.SUNDAY...North winds 10 to 15 kt backing to southwest 10 to
20 kt. Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-150915-
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 Tue Jul 14 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...South winds 10 to 15 kt veering to west 10 to
20 kt. Waves 1 to 3 ft.
.WEDNESDAY...West winds 10 to 15 kt veering to north 10 to 20 kt.
Patchy smoke in the afternoon. Waves 1 to 3 ft.
.WEDNESDAY NIGHT...Northeast winds 10 to 15 kt diminishing to
5 to 10 kt. Smoke. Waves 1 to 3 ft.
.THURSDAY...Northeast winds 5 to 10 kt increasing to 10 to 15 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 diminishing to 5 to
10 kt. Areas of smoke in the evening. Waves 1 to 2 ft.
.FRIDAY...Southeast winds 10 to 15 kt becoming south. Waves 1 to
2 ft.
.FRIDAY NIGHT...South winds 10 to 15 kt becoming southwest. Waves
1 to 3 ft.
.SATURDAY...Southwest winds 10 to 20 kt increasing to 15 to
25 kt. Waves 2 to 4 ft.
.SUNDAY...North winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 2 to 4 ft.

$$

LMZ761-150915-
MAFOR 1504/
MICHIGAN NORTH 11620 11720 11710 11700 11810 11820 12810. Waves 1
to 3 feet overnight. Waves 2 feet or less Wednesday and Wednesday
evening.

MICHIGAN SOUTH 11620 12610 11600 11710 13810. Waves 1 to 3 feet
overnight. Waves 2 feet or less Wednesday and Wednesday evening.

$$


Patterson

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

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