300
FZUS63 KMKX 171432
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
932 AM 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 wind shift to the northeast is expected along with brief gusty
winds directly behind the front. The front will then gradually
return north as a warm front mainly Sunday night, with winds
veering southerly and becoming gusty as low pressure of 29.5
inches approaches from the west. 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.

LMZ261-362-364-366-563-565-567-868-172200-
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-
932 AM CDT Sun May 17 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Northeast winds 10 to 20 kt increasing to 15 to
25 kt. Chance of rain showers through mid morning, then rain
showers likely with slight chance of thunderstorms this
afternoon. Patchy fog this afternoon. Waves 2 to 4 ft.
.TONIGHT...East winds 15 to 25 kt veering to south to 30 kt.
Patchy fog. Rain showers likely with a chance of thunderstorms in
the evening, then chance of rain showers and slight chance of
thunderstorms overnight. Waves 3 to 5 ft building to 4 to 6 ft
occasionally to 8 ft.
.MONDAY...South winds to 30 kt. Patchy fog in the morning, then
patchy dense fog in the afternoon. Chance of showers in the
morning, then showers likely in the afternoon. Waves 5 to 8 ft
occasionally to 10 ft.
.MONDAY NIGHT...South winds to 30 kt. Showers likely with a
chance of thunderstorms in the evening, then showers with a
chance of thunderstorms overnight. Waves 5 to 8 ft occasionally
to 10 ft.
.TUESDAY...South gales to 35 kt becoming southwest. Showers with
a chance of thunderstorms in the morning, then chance of
thunderstorms in the afternoon. Waves 7 to 10 ft occasionally to
13 ft.
.TUESDAY NIGHT...Northwest winds to 30 kt diminishing to 15 to
25 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 3 to
5 ft.
.WEDNESDAY...Northwest winds 15 to 25 kt becoming north. Waves
3 to 5 ft.
.THURSDAY...East winds 5 to 10 kt becoming north 10 to 20 kt.
Waves 1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-172200-
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-
932 AM CDT Sun May 17 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...East winds 10 to 20 kt becoming southeast 15 to
25 kt. Patchy fog. Slight chance of rain showers and
thunderstorms through mid morning, then chance of rain showers
and slight chance of thunderstorms this afternoon. Waves 2 to
4 ft.
.TONIGHT...Southeast winds 15 to 25 kt becoming south to 30 kt.
Patchy fog in the evening. Waves 3 to 5 ft building to 4 to 6 ft
occasionally to 8 ft.
.MONDAY...South winds to 30 kt. Showers likely with a chance of
thunderstorms. Waves 5 to 8 ft occasionally to 10 ft.
.MONDAY NIGHT...South winds 15 to 25 kt increasing to 30 kt.
Showers likely with a chance of thunderstorms in the evening,
then chance of showers and thunderstorms overnight. Waves 4 to
7 ft occasionally to 9 ft building to 5 to 8 ft occasionally to
10 ft.
.TUESDAY...South winds to 30 kt becoming southwest. Chance of
showers and thunderstorms. Waves 7 to 10 ft occasionally to
13 ft.
.TUESDAY NIGHT...West winds 15 to 25 kt becoming northwest 10 to
20 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to
6 ft occasionally to 8 ft.
.WEDNESDAY...North winds 10 to 20 kt. Waves 3 to 5 ft.
.THURSDAY...Northeast winds 10 to 15 kt becoming north 10 to
20 kt. Waves 1 to 3 ft.

$$

LMZ761-172200-
MAFOR 1716/
MICHIGAN NORTH 11126 11136 12236 11330 11340 12440. A chance of
thunderstorms this evening. Waves 1 to 3 feet this afternoon.
Waves 2 to 4 feet building to 3 to 6 feet tonight. Waves 3 to 6
feet building to 4 to 7 feet Monday morning.

MICHIGAN SOUTH 11326 12330 14440 11446. Waves 1 to 3 feet this
afternoon. Waves 1 to 3 feet building to 3 to 6 feet tonight.
Waves 3 to 6 feet Monday morning.

$$


Wagner

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

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