653
FZUS63 KMKX 171959
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
259 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...

Gusty northeast winds continue across north of the warm front
across much of the lake. Expect to see the front gradually return
north as a warm front overnight tonight, with winds veering
southerly and becoming gusty as low pressure around 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.

LMZ261-362-364-366-563-565-567-868-180315-
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-
259 PM CDT Sun May 17 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...East winds to 30 kt veering to south. Patchy fog. Rain
showers with a chance of thunderstorms this evening, then chance
of rain showers and slight chance of 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
slight chance of thunderstorms. Waves 6 to 9 ft occasionally to
12 ft.
.MONDAY NIGHT...South winds to 30 kt. Areas of dense fog in the
evening. Chance of showers in the evening, then showers with a
chance of thunderstorms overnight. Waves 5 to 8 ft occasionally
to 10 ft subsiding to 4 to 7 ft occasionally to 9 ft.
.TUESDAY...South gales to 35 kt becoming southwest. Showers in
the morning. Waves 6 to 9 ft occasionally to 12 ft.
.TUESDAY NIGHT...Northwest winds to 30 kt diminishing to 15 to
25 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to
5 ft.
.WEDNESDAY...Northwest winds 15 to 25 kt becoming north. Waves
2 to 4 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.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-180315-
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-
259 PM CDT Sun May 17 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...Southeast winds 15 to 25 kt becoming south to 30 kt.
Patchy fog this evening. Slight chance of rain showers overnight.
Waves 3 to 5 ft building to 5 to 8 ft occasionally to 10 ft.
.MONDAY...South winds to 30 kt. Chance of showers and
thunderstorms. Patchy fog in the afternoon. 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. Waves 6 to 9 ft occasionally to 12 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.
.WEDNESDAY NIGHT...Northeast winds 10 to 20 kt diminishing to
10 to 15 kt. Waves 3 to 5 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.

$$

LMZ761-180315-
MAFOR 1722/
MICHIGAN NORTH 12246 12340 14440. A chance of thunderstorms this
evening. Waves 2 to 4 feet building to 4 to 7 feet tonight. Waves
5 to 8 feet Monday.

MICHIGAN SOUTH 11330 14440 11440 11446 19444 11430. A chance of
thunderstorms early this evening and Monday. Waves 1 to 3 feet
building to 4 to 7 feet tonight. Waves 5 to 8 feet Monday.

$$


Wagner

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

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