670
FZUS63 KMKX 122019
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
319 PM CDT Sun May 12 2024

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...

Light south winds early this morning will become breezy this
afternoon as a wave of low pressure around 29.5 inches and its
associated cold front moves across northern Wisconsin. The low and
cold front will then slowly move across northern Lake Michigan
tonight. Thus the winds will shift to light northwest late tonight
over the north half, while modest southwest winds continue over
the south half. The cold front will slowly move south on Monday
bringing light to modest northerly winds to the entire lake by
later in the day.

Breezy northerly winds and building waves will then develop over
the south half late Monday night into Tuesday night as low
pressure passes to the south, while high pressure extends from
western Hudson Bay into Wisconsin.

LMZ261-362-364-366-563-565-567-868-130330-
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-
319 PM CDT Sun May 12 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...South winds to 30 kt diminishing to 15 to 25 kt late
this evening, then becoming southwest after midnight and becoming
west 10 to 20 kt late. Chance of rain showers and thunderstorms
this evening, then slight chance of rain showers overnight. Waves
4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft.
.MONDAY...North winds 10 to 15 kt increasing to 10 to 20 kt.
Chance of rain showers in the afternoon. Waves 1 to 3 ft.
.MONDAY NIGHT...Northeast winds 10 to 20 kt becoming north to
30 kt. Chance of rain showers in the evening. Waves 2 to 4 ft
building to 3 to 5 ft.
.TUESDAY...North winds 15 to 25 kt. Waves 4 to 6 ft occasionally
to 8 ft.
.TUESDAY NIGHT...North winds 15 to 25 kt becoming northeast 10 to
20 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.WEDNESDAY...Northeast winds 10 to 15 kt increasing to 10 to
20 kt. Waves 1 to 3 ft.
.WEDNESDAY NIGHT...Northeast winds 10 to 20 kt becoming east
10 to 15 kt. Waves 1 to 3 ft.
.THURSDAY...Southeast winds 10 to 15 kt. Waves 1 to 2 ft.
.FRIDAY...Southeast winds 10 to 15 kt increasing to 10 to 20 kt.
Chance of showers. Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-130330-
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-
319 PM CDT Sun May 12 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...South winds to 30 kt becoming southwest 10 to 20 kt.
Chance of showers and slight chance of thunderstorms this
evening, then slight chance of showers and thunderstorms
overnight. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.MONDAY...Southwest winds 10 to 20 kt becoming south 10 to 15 kt
early in the afternoon, then veering to north 10 to 20 kt late.
Slight chance of showers and thunderstorms in the morning, then
chance of showers and slight chance of thunderstorms in the
afternoon. Waves 2 to 4 ft subsiding to 1 to 2 ft.
.MONDAY NIGHT...Northeast winds 10 to 15 kt increasing to 30 kt.
Showers. Waves 1 to 3 ft building to 4 to 6 ft occasionally to
8 ft.
.TUESDAY...North winds to 30 kt. Chance of showers. Waves 5 to
8 ft occasionally to 10 ft.
.TUESDAY NIGHT...North winds 15 to 25 kt becoming northeast 10 to
20 kt. Waves 5 to 8 ft occasionally to 10 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...North winds 10 to 20 kt becoming east 10 to
15 kt. Waves 2 to 4 ft.
.THURSDAY...Southeast winds 10 to 15 kt. Waves 1 to 2 ft.
.FRIDAY...Southeast winds 10 to 20 kt. Chance of showers. Waves
1 to 3 ft.

$$

LMZ761-130330-
MAFOR 1222/
MICHIGAN NORTH 11440 11430 11530 11620 11710 13810. A chance of
showers and thunderstorms this evening. A chance of showers
Monday afternoon. Waves 3 to 6 feet subsiding to 1 to 3 feet
tonight. Waves 1 to 3 feet Monday.

MICHIGAN SOUTH 11440 13530 12520 11510 11826. Waves 3 to 5 feet
subsiding to 1 to 3 feet tonight. Waves 1 to 3 feet Monday.

$$


Cronce

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

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