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000
FZUS63 KMKX 211959
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
259 PM CDT Sun Apr 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...

Westerly winds have shifted to become southerly across the
northern portions of the Lake as high pressure of 30.3 inches sinks
southward into the Lower Mississippi Valley and low pressure of
29.5 inches remains in place over northern Quebec. Winds remain
light through the overnight hours. Breezy south winds will
develop Monday, shifting westerly into Tuesday afternoon as low
pressure of 29.5 inches approaches the northern Great Lakes from
Saskatchewan and Manitoba and passes to the north. Winds could
approach gale force during this time. Winds shift to northerly
Tuesday night as the low passes eastward and a cold front moves
down the lake. Northerly gales will be possible behind the front.

LMZ080-669-671-673-675-777-779-870-872-874-876-878-220315-
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 Apr 21 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...Southwest winds 10 to 20 kt diminishing to 10 to 15 kt
late this evening, then becoming west after midnight becoming
southwest 5 to 10 kt late. Waves 1 to 3 ft.
.MONDAY...Southwest winds 10 to 15 kt becoming south 15 to 25 kt.
Waves 1 to 2 ft building to 3 to 5 ft.
.MONDAY NIGHT...South winds 15 to 25 kt becoming southwest gales
to 35 kt. Showers likely overnight. Waves 4 to 6 ft occasionally
to 8 ft building to 7 to 10 ft occasionally to 13 ft.
.TUESDAY...Southwest winds to 30 kt diminishing to 10 to 20 kt in
the afternoon. Chance of showers in the morning, then showers
likely in the afternoon. Waves 6 to 9 ft occasionally to 12 ft
subsiding to 4 to 7 ft occasionally to 9 ft.
.TUESDAY NIGHT...Northwest winds to 30 kt becoming north. Waves
6 to 9 ft occasionally to 12 ft building to 8 to 11 ft
occasionally to 14 ft.
.WEDNESDAY...North winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to 8 ft
occasionally to 10 ft.
.WEDNESDAY NIGHT...North winds 10 to 20 kt becoming east 10 to
15 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft.
.THURSDAY...Southeast winds 10 to 15 kt. Waves 1 to 3 ft.
.FRIDAY...Southeast winds to 30 kt. Rain showers likely. Waves
4 to 7 ft occasionally to 9 ft.

$$

LMZ261-362-364-366-563-565-567-868-220315-
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 Apr 21 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...Northwest winds 10 to 20 kt backing to south 10 to
15 kt. Waves 1 to 3 ft.
.MONDAY...South winds 10 to 20 kt increasing to 30 kt. Waves 2 to
4 ft building to 4 to 6 ft occasionally to 8 ft.
.MONDAY NIGHT...South winds to 30 kt becoming southwest. Rain
showers likely in the evening, then rain showers overnight. Waves
5 to 8 ft occasionally to 10 ft.
.TUESDAY...Southwest winds to 30 kt becoming west. Chance of rain
showers in the morning, then rain showers likely in the
afternoon. Waves 5 to 8 ft occasionally to 10 ft subsiding to
4 to 6 ft occasionally to 8 ft.
.TUESDAY NIGHT...North winds to 30 kt. Waves 6 to 9 ft
occasionally to 12 ft.
.WEDNESDAY...Northeast winds 15 to 25 kt becoming north 10 to
20 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
6 ft occasionally to 8 ft.
.WEDNESDAY NIGHT...Northeast winds 10 to 20 kt becoming southeast
5 to 10 kt. Waves 2 to 4 ft subsiding to 1 to 2 ft.
.THURSDAY...South winds 10 to 15 kt. Waves 1 to 3 ft.
.FRIDAY...Southeast winds to 30 kt. Chance of rain showers. Waves
4 to 6 ft occasionally to 8 ft.

$$

LMZ761-220315-
MAFOR 2122/
MICHIGAN NORTH 11630 11810 11300 12410 11420 11430 11440. Waves 1
to 3 feet tonight. Waves 1 to 3 feet building to 3 to 5 feet
Monday.

MICHIGAN SOUTH 12510 11610 11600 12510 11420 11430. Waves 2 feet
or less tonight. Waves 1 to 3 feet building to 2 to 4 feet
Monday.

$$


MH

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

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