016
FZUS63 KMKX 111859
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
159 PM CDT Sat Jul 11 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 of 30.1 inches over the Great Lakes today will
strengthen to 30.2 inches by Sunday morning. The high will largely
stay put through the first half of next week, eventually
weakening and shifting southward by late in the week ahead of an
approaching trough of low pressure. Northerly winds generally
under 15 knots through today will become southerly across the
north Sunday, while becoming light and variable in the south.
Winds will become southerly across the lake Monday, increasing a
bit by Tuesday.

LMZ261-362-364-366-563-565-567-868-120315-
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-
159 PM CDT Sat Jul 11 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...Northeast winds 10 to 15 kt veering to south. Waves
1 to 2 ft.
.SUNDAY...South winds 10 to 15 kt becoming southwest 10 to 20 kt.
Waves 2 to 4 ft.
.SUNDAY NIGHT...Southwest winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 2 to 4 ft.
.MONDAY...Southwest winds 10 to 20 kt. Waves 2 to 4 ft.
.MONDAY NIGHT...Southwest winds 10 to 20 kt. Waves 2 to 4 ft.
.TUESDAY...West winds 15 to 25 kt becoming southwest to 30 kt.
Waves 2 to 4 ft.
.TUESDAY NIGHT...Southwest winds to 30 kt becoming west 10 to
15 kt. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.WEDNESDAY...Northwest winds 10 to 15 kt becoming north 15 to
25 kt. Waves 1 to 3 ft.
.THURSDAY...North winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-120315-
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-
159 PM CDT Sat Jul 11 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...North winds 10 to 20 kt veering to east 10 to 15 kt.
Waves 1 to 3 ft.
.SUNDAY...East winds 5 to 10 kt backing to northwest. Waves 1 to
2 ft.
.SUNDAY NIGHT...West winds 10 to 15 kt becoming southwest. Waves
1 to 2 ft.
.MONDAY...Southwest winds 10 to 15 kt. Waves 1 to 2 ft.
.MONDAY NIGHT...Southwest winds 10 to 15 kt. Waves 1 to 2 ft.
.TUESDAY...West winds 10 to 15 kt becoming southwest 10 to 20 kt.
Waves 1 to 2 ft.
.TUESDAY NIGHT...Southwest winds 10 to 20 kt becoming west. Waves
1 to 3 ft.
.WEDNESDAY...West winds 10 to 20 kt. Waves 1 to 3 ft.
.THURSDAY...North winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 2 ft.

$$

LMZ761-120315-
MAFOR 1122/
MICHIGAN NORTH 11110 11200 11300 11400 12410 11420 11520. Waves 2
feet or less tonight. Waves 1 to 3 feet Sunday.

MICHIGAN SOUTH 12820 11110 11210 12200 11210 11810. Waves 1 to 3
feet tonight. Waves 1 foot or less Sunday.

$$


DDV

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

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