Great Lakes Forecast
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000
FZUS63 KMKX 100202
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
902 PM CDT Thu Apr 9 2020

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 northwest winds will persist through tonight as low
pressure of 28.9 inches moves east through New England, and high
pressure of 30.4 inches builds south into the Great Plains. Gale
force gusts are expected through tonight, and a Gale Warning is
in effect.

Winds will diminish on Friday as that high weakens to 30.0 inches
as it moves into the Tennessee Valley.

Strong low pressure of 29.3 inches is then expected to develop in
the Southern Plains early Sunday, and lift through the Ohio
Valley and into Michigan by late Sunday night or early Monday
morning while deepening to 28.9 inches. This will bring another
period of stronger winds and likely gales to Lake Michigan.

&&

LMZ261-362-364-366-563-565-567-868-100930-
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-
902 PM CDT Thu Apr 9 2020

SHEBOYGAN WI TO PENTWATER MI NORTH...

...GALE WARNING IN EFFECT UNTIL 7 AM CDT FRIDAY...

.REST OF TONIGHT...Northwest gales to 35 kt. Slight chance of
rain showers through late evening. Waves 6 to 9 ft occasionally
to 12 ft building to 7 to 10 ft occasionally to 13 ft.
.FRIDAY...Northwest winds to 30 kt becoming west 10 to 20 kt in
the afternoon. Waves 7 to 10 ft occasionally to 13 ft subsiding to
3 to 5 ft.
.FRIDAY NIGHT...West winds 10 to 20 kt backing to southeast 10 to
15 kt late in the evening, then becoming south after midnight
becoming south 5 to 10 kt late. Waves 1 to 3 ft subsiding to 1 to
2 ft.
.SATURDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft building to 2 to 4 ft.
.SATURDAY NIGHT...South winds 10 to 20 kt diminishing to 10 to
15 kt. Chance of rain in the evening, then rain likely overnight.
Waves 3 to 5 ft.
.SUNDAY...East winds 10 to 15 kt becoming northeast 15 to 25 kt
in the afternoon. Rain likely in the morning, then rain in the
afternoon. Waves 2 to 4 ft building to 3 to 5 ft.
.SUNDAY NIGHT...Northeast winds to 30 kt. Rain. Waves 5 to 8 ft
occasionally to 10 ft building to 7 to 10 ft occasionally to
13 ft.
.MONDAY...North gales to 35 kt becoming northwest gales to 40 kt.
Rain likely. Waves 8 to 12 ft occasionally to 16 ft.
.TUESDAY...West winds to 30 kt diminishing to 10 to 20 kt. Chance
of rain and snow. Waves 5 to 8 ft occasionally to 10 ft subsiding
to 4 to 6 ft occasionally to 8 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-100930-
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-
902 PM CDT Thu Apr 9 2020

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WARNING IN EFFECT UNTIL 7 AM CDT FRIDAY...

.REST OF TONIGHT...Northwest gales to 35 kt. Slight chance of
rain showers through late evening. Waves 7 to 10 ft occasionally
to 13 ft building to 8 to 12 ft occasionally to 16 ft.
.FRIDAY...Northwest winds to 30 kt diminishing to 15 to 25 kt
early in the afternoon, then becoming west 10 to 20 kt late.
Waves 8 to 12 ft occasionally to 16 ft subsiding to 4 to 7 ft
occasionally to 9 ft.
.FRIDAY NIGHT...South winds 10 to 15 kt becoming southwest. Waves
3 to 5 ft subsiding to 1 to 2 ft.
.SATURDAY...Southwest winds 10 to 15 kt becoming south 10 to
20 kt. Waves 1 to 2 ft building to 2 to 4 ft.
.SATURDAY NIGHT...South winds 10 to 20 kt. Rain. Waves 2 to 4 ft.
.SUNDAY...Southeast winds 10 to 15 kt increasing to 10 to 20 kt.
Rain likely in the morning, then rain in the afternoon. Waves
2 to 4 ft.
.SUNDAY NIGHT...Northeast winds to 30 kt becoming north. Rain.
Waves 4 to 7 ft occasionally to 9 ft building to 7 to 10 ft
occasionally to 13 ft.
.MONDAY...Northwest gales to 40 kt becoming west gales to 45 kt.
Rain likely. Waves 10 to 14 ft occasionally to 18 ft.
.TUESDAY...West winds to 30 kt diminishing to 10 to 20 kt. Waves
7 to 10 ft occasionally to 13 ft subsiding to 4 to 7 ft
occasionally to 9 ft.

$$

LMZ761-100930-
MAFOR 1003/
MICHIGAN NORTH...GALE WARNING IN EFFECT...13750 12740 11730 11620
11520. Waves 6 to 10 feet overnight. Waves 5 to 9 feet subsiding
to 3 to 6 feet Friday. Waves 1 to 3 feet Friday evening.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...13750 11740 11730 11720
11520 11510. Waves 7 to 11 feet building to 9 to 12 feet
overnight. Waves 7 to 11 feet subsiding to 3 to 6 feet Friday.
Waves 2 to 4 feet subsiding to 1 to 3 feet Friday evening.

$$


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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