Great Lakes Forecast
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328
FZUS63 KMKX 201955
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
255 PM CDT Sat Apr 20 2019

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...

Low pressure of 29.6 inches over western New York will continue to
weaken as it moves off to the northeast. Meanwhile, weak high
pressure of 29.9 inches will move into lower Michigan this evening,
then into the northeastern part of the country through Sunday.
Northerly winds over Lake Michigan will diminish tonight, then
southerly winds will gradually increase on Sunday. Low pressure
of 29.7 inches should then move from Kansas to lower Michigan
Sunday night through Tuesday. Winds may be gusty at times during
this period, becoming north on Tuesday.

LMZ261-362-364-366-563-565-567-868-210315-
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-
255 PM CDT Sat Apr 20 2019

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...North winds 10 to 20 kt becoming west 5 to 10 kt late
this evening, then backing south after midnight. Waves 1 to 3 ft
subsiding to 1 ft or less.
.SUNDAY...South winds 10 to 15 kt becoming southeast 10 to 20 kt.
Waves 1 to 2 ft building to 2 to 4 ft.
.SUNDAY NIGHT...Southeast winds 10 to 20 kt becoming south. Waves
2 to 4 ft.
.MONDAY...South winds 10 to 20 kt backing to east. Chance of rain
showers. Waves 3 to 5 ft.
.MONDAY NIGHT...Northeast winds 10 to 20 kt. Chance of rain
showers in the evening, then rain showers likely overnight. Waves
2 to 4 ft.
.TUESDAY...North winds 15 to 25 kt. Chance of rain showers. Waves
3 to 5 ft.
.TUESDAY NIGHT...North winds 10 to 20 kt. Waves 3 to 5 ft.
.WEDNESDAY...North winds 10 to 15 kt backing to west. Waves 1 to
3 ft subsiding to 1 to 2 ft.
.THURSDAY...South winds 10 to 20 kt becoming southwest. Chance of
rain showers. Waves 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-210315-
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-
255 PM CDT Sat Apr 20 2019

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...North winds 15 to 25 kt diminishing to 10 to 20 kt
late this evening, then becoming variable 5 to 10 kt after
midnight and southwest late. Waves 3 to 5 ft subsiding to 1 to 3
ft.
.SUNDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 2 ft building to 2 to 4 ft.
.SUNDAY NIGHT...South winds 10 to 20 kt. Waves 2 to 4 ft.
.MONDAY...South winds 10 to 20 kt. Waves 3 to 5 ft.
.MONDAY NIGHT...South winds 10 to 20 kt becoming southwest.
Chance of rain showers and thunderstorms in the evening, then
chance of rain showers overnight. Waves 2 to 4 ft.
.TUESDAY...Northwest winds 10 to 20 kt becoming north 15 to
25 kt. Chance of rain showers. Waves 3 to 5 ft.
.TUESDAY NIGHT...North winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 3 to 5 ft.
.WEDNESDAY...North winds 10 to 20 kt diminishing to 10 to 15 kt.
Waves 2 to 4 ft.
.THURSDAY...Southwest winds 10 to 20 kt. Waves 1 to 3 ft.

$$

LMZ761-210315-
MAFOR 2021/
MICHIGAN NORTH 11820 11810 12400 12410 12420. Waves 2 to 4 ft
subsiding to 1 ft or less tonight, then building to 2 to 4 ft
Sunday.

MICHIGAN SOUTH 12830 11810 11500 12410 12420. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft tonight and 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



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