461
FZUS63 KMKX 180144
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
844 PM CDT Sun May 17 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...

A warm front will move from southern Lake Michigan to northern
Lake Michigan throughout the night. East to northeast winds will
become breezy out of the south. Areas of dense fog may occur at
times until the front passes. Breezy south winds will then
continue through Monday and into Tuesday followed by a wind shift
to the northwest late Tuesday afternoon and evening with the
passage of a cold front. High pressure and light and variable
winds will then take hold from late Wednesday into Thursday.

LMZ261-362-364-366-563-565-567-868-180915-
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-
844 PM CDT Sun May 17 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...East winds to 30 kt becoming south. Patchy
fog. Rain showers likely with a chance of thunderstorms through
early evening, then chance of rain showers and thunderstorms
overnight. Waves 3 to 5 ft building to 5 to 8 ft occasionally to
10 ft.
.MONDAY...South winds to 30 kt. Patchy fog. Chance of showers and
thunderstorms. Waves 6 to 9 ft occasionally to 12 ft.
.MONDAY NIGHT...South winds 15 to 25 kt. Patchy fog in the
evening, then areas of fog overnight. Chance of showers and
thunderstorms in the evening, then showers with a chance of
thunderstorms overnight. Waves 5 to 8 ft occasionally to 10 ft.
.TUESDAY...South winds to 30 kt becoming west. Showers with a
chance of thunderstorms in the morning. Waves 5 to 8 ft
occasionally to 10 ft.
.TUESDAY NIGHT...Northwest winds 15 to 25 kt. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft.
.WEDNESDAY...North winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 3 to 5 ft.
.WEDNESDAY NIGHT...Northeast winds 10 to 20 kt diminishing to
5 to 10 kt. Waves 1 to 3 ft subsiding to 1 to 2 ft.
.THURSDAY...East winds 5 to 10 kt becoming northeast 10 to 20 kt.
Waves 1 ft or less.
.FRIDAY...Southeast winds 10 to 15 kt becoming northeast 10 to
20 kt. Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-180915-
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-
844 PM CDT Sun May 17 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Variable winds 10 to 20 knots becoming southeast
winds to 30 kt becoming south. Areas of fog through early
evening, then patchy dense fog overnight. Chance of rain showers
and thunderstorms overnight. Waves 3 to 5 ft building to 5 to 8 ft
occasionally to 10 ft.
.MONDAY...South winds to 30 kt diminishing to 15 to 25 kt. Chance
of showers and thunderstorms. Waves 5 to 8 ft occasionally to
10 ft.
.MONDAY NIGHT...South winds 15 to 25 kt increasing to 30 kt.
Chance of showers and thunderstorms. Waves 4 to 7 ft occasionally
to 9 ft.
.TUESDAY...South winds to 30 kt becoming southwest. Chance of
showers and thunderstorms in the morning, then chance of showers
in the afternoon. Waves 5 to 8 ft occasionally to 10 ft.
.TUESDAY NIGHT...Northwest winds 10 to 20 kt becoming north.
Waves 4 to 6 ft occasionally to 8 ft.
.WEDNESDAY...North winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 3 to 5 ft.
.WEDNESDAY NIGHT...Northeast winds 10 to 20 kt diminishing to
10 to 15 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.THURSDAY...East winds 10 to 15 kt becoming northeast 10 to
20 kt. Waves 1 to 3 ft.
.FRIDAY...East winds 10 to 15 kt becoming northeast. Waves 1 to
3 ft.

$$

LMZ761-180915-
MAFOR 1804/
MICHIGAN NORTH 12330 14440 11430 11520. A chance of thunderstorms
late this evening, then a chance of showers and thunderstorms
overnight. A chance of showers and thunderstorms Monday and
Monday evening. Waves 3 to 6 feet building to 4 to 7 feet
overnight. Waves 5 to 8 feet Monday. Waves 4 to 7 feet subsiding
to 3 to 6 feet Monday evening.

MICHIGAN SOUTH 11430 11430 19434 11430 11440 14430. A chance of
showers and thunderstorms. Waves 3 to 6 feet building to 4 to 7
feet overnight. Waves 5 to 8 feet Monday. Waves 4 to 7 feet
subsiding to 3 to 6 feet Monday evening.

$$


Gehring

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

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