178
FZUS63 KMKX 212001
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
301 PM CDT Sat Sep 21 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...

Expect southerly winds increase through the evening as low
pressure around 29.7 inches lifts from MN to Ontario, which will
in turn drag a cold front across WI and Lake Michigan overnight
through Sunday. Showers and thunderstorms will develop ahead of
and along the cold front. Southwesterly winds will become
northerly behind this front Sunday night into Monday. Given the
strong cold air moving over the warmer lake waters, expecting to
see gusty northerly winds during this timeframe. Gusts up to 30
knots and a few gale force gusts cannot be ruled out, especially
for the southern portions of Lake Michigan. Will see winds weaken
a bit for Monday as high pressure builds in across the Great Lakes
region, but the northerly component will persist through the
start of the week.

LMZ261-362-364-366-563-565-567-868-220330-
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-
301 PM CDT Sat Sep 21 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...South winds 10 to 15 kt. Slight chance of showers and
thunderstorms this evening, then chance of showers and slight
chance of thunderstorms overnight. Waves 1 to 3 ft.
.SUNDAY...Southwest winds 10 to 15 kt veering to northwest 10 to
20 kt late in the morning, then becoming north 15 to 25 kt early
in the afternoon increasing to 30 kt late. Showers likely with a
chance of thunderstorms. Waves 2 to 4 ft building to 4 to 6 ft
occasionally to 8 ft.
.SUNDAY NIGHT...North winds to 30 kt diminishing to 15 to 25 kt.
Chance of showers in the evening. Waves 4 to 7 ft occasionally to
9 ft.
.MONDAY...North winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 4 to 6 ft occasionally to 8 ft.
.MONDAY NIGHT...Northeast winds 10 to 20 kt diminishing to 10 to
15 kt. Waves 3 to 5 ft subsiding to 1 to 3 ft.
.TUESDAY...Northeast winds 10 to 15 kt. Waves 1 to 3 ft.
.TUESDAY NIGHT...North winds 10 to 15 kt diminishing to 5 to
10 kt. Waves 1 to 2 ft.
.WEDNESDAY...Northwest winds 10 to 15 kt increasing to 10 to
20 kt. Waves 1 to 2 ft.
.THURSDAY...North winds 10 to 15 kt. Waves 1 ft or less.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-220330-
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-
301 PM CDT Sat Sep 21 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...Southeast winds 10 to 15 kt becoming south. Slight
chance of showers and thunderstorms this evening, then chance of
showers and slight chance of thunderstorms overnight. Waves 1 to
3 ft.
.SUNDAY...Southwest winds 10 to 15 kt becoming west late in the
morning, then becoming northwest 15 to 25 kt early in the
afternoon and becoming north late. Chance of showers and
thunderstorms in the morning, then showers with a chance of
thunderstorms in the afternoon. Waves 2 to 4 ft building to 4 to
6 ft occasionally to 8 ft.
.SUNDAY NIGHT...North winds to 30 kt diminishing to 15 to 25 kt.
Chance of showers in the evening. Waves 5 to 8 ft occasionally to
10 ft.
.MONDAY...North winds 15 to 25 kt. Waves 5 to 8 ft occasionally
to 10 ft subsiding to 4 to 7 ft occasionally to 9 ft.
.MONDAY NIGHT...Northeast winds 10 to 20 kt diminishing to 10 to
15 kt. Chance of showers overnight. Waves 4 to 6 ft occasionally
to 8 ft subsiding to 2 to 4 ft.
.TUESDAY...Northeast winds 10 to 15 kt becoming north. Chance of
showers. Waves 2 to 4 ft.
.TUESDAY NIGHT...North winds 10 to 15 kt. Waves 1 to 3 ft.
.WEDNESDAY...North winds 10 to 15 kt. Waves 1 to 3 ft.
.THURSDAY...North winds 5 to 10 kt increasing to 10 to 15 kt.
Waves 1 to 2 ft.

$$

LMZ761-220330-
MAFOR 2122/
MICHIGAN NORTH 14410 11510 11716 11826 11836. A chance of
thunderstorms Sunday. Waves 2 feet or less tonight. Waves 1 to 3
feet building to 3 to 5 feet Sunday.

MICHIGAN SOUTH 12310 13410 11516 11626 11836. A chance of
thunderstorms Sunday. Waves 2 feet or less tonight. Waves 1 to 3
feet building to 3 to 5 feet Sunday.

$$


Cronce

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

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