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National Weather Service Marine Forecast FZUS63 KMKX

FZUS63 KMKX 052112
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
312 PM CST Thu Dec 5 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 29.9 inches will slide across central Lake
Michigan tonight. Gusty north to northwest winds will develop
late tonight into Friday. High pressure of 30.4 inches will move
into the Great Lakes Friday afternoon and night, resulting in
decreasing winds.

Low pressure around 29.6 inches approaching from the Northern
Plains will bring a round of gusty southerly winds Saturday into
Sunday as the low passes by just to the north of Lake Michigan.
Gale force gusts will be possible Sunday, particularly across the
northern half of the lake.

Gusty northerly winds will develop in the wake of the system
later Monday into Tuesday, possibly approaching gale force. A
much colder airmass spreading into the region next week will lead
to freezing spray conditions.

&&

LMZ261-362-364-366-563-565-567-868-060430-
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-
312 PM CST Thu Dec 5 2019

SHEBOYGAN WI TO PENTWATER MI NORTH...

TONIGHT
South winds 10 to 20 kt veering to north 15 to 25 kt
after midnight, then becoming northwest to 30 kt late. Rain and
snow this evening, then chance of rain and snow overnight. Waves
2 to 4 ft building to 4 to 7 ft occasionally to 9 ft.

FRIDAY
Northwest winds to 30 kt diminishing to 10 to 20 kt.
Slight chance of snow in the morning. Waves 4 to 7 ft
occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft.

FRIDAY NIGHT
Northwest winds 10 to 20 kt backing to southwest.
Waves 2 to 4 ft subsiding to 1 to 3 ft.

SATURDAY
Southwest winds 15 to 25 kt becoming south to 30 kt.
Chance of rain in the morning. Waves 4 to 6 ft occasionally to
8 ft building to 5 to 8 ft occasionally to 10 ft.

SATURDAY NIGHT
South gales to 40 kt becoming southwest gales
to 45 kt. Waves 7 to 10 ft occasionally to 13 ft building to 8 to
12 ft occasionally to 16 ft.

SUNDAY
Southwest gales to 40 kt diminishing to 30 kt in the
afternoon. Chance of rain in the afternoon. Waves 8 to 12 ft
occasionally to 16 ft subsiding to 8 to 11 ft occasionally to
14 ft.

SUNDAY NIGHT
West winds 15 to 25 kt veering to north. Chance
of rain. Waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to
6 ft occasionally to 8 ft.

MONDAY
Northeast winds 15 to 25 kt becoming north. Snow and
rain likely. Waves 4 to 7 ft occasionally to 9 ft.

TUESDAY
Northwest winds to 30 kt. Chance of snow. Waves 4 to
7 ft occasionally to 9 ft. 



LMZ080-669-671-673-675-777-779-870-872-874-876-878-060430-
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-
312 PM CST Thu Dec 5 2019

SHEBOYGAN WI TO PENTWATER MI SOUTH...

TONIGHT
South winds 10 to 20 kt becoming southwest late this
evening, then becoming west to 30 kt after midnight becoming
north late. Waves 2 to 4 ft building to 5 to 8 ft occasionally to
10 ft.

FRIDAY
North winds to 30 kt diminishing to 10 to 20 kt. Waves
6 to 9 ft occasionally to 12 ft.

FRIDAY NIGHT
North winds 10 to 15 kt backing to southwest
10 to 20 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to
2 to 4 ft.

SATURDAY
Southwest winds 10 to 20 kt becoming south 15 to
25 kt. Waves 3 to 5 ft building to 4 to 7 ft occasionally to
9 ft.

SATURDAY NIGHT
South winds to 30 kt increasing to gales to
35 kt. Waves 6 to 9 ft occasionally to 12 ft building to 7 to
10 ft occasionally to 13 ft.

SUNDAY
Southwest gales to 35 kt. Waves 7 to 10 ft occasionally
to 13 ft subsiding to 6 to 9 ft occasionally to 12 ft.

SUNDAY NIGHT
Southwest winds 15 to 25 kt diminishing to 10 to
20 kt. Rain likely. Waves 4 to 6 ft occasionally to 8 ft
subsiding to 2 to 4 ft.

MONDAY
Northwest winds 10 to 20 kt becoming north 15 to 25 kt.
Rain likely. Waves 4 to 6 ft occasionally to 8 ft.

TUESDAY
Northwest winds to 30 kt becoming west. Chance of
snow. Waves 5 to 8 ft occasionally to 10 ft. 



LMZ761-060430-
MAFOR 0522/
MICHIGAN NORTH 11410 11417 11827 11840 12740 12730. Chance of
rain and snow through tonight. Waves 1 to 3 feet building to 4 to
7 feet tonight. Waves 4 to 7 feet subsiding to 3 to 6 feet
Friday.

MICHIGAN SOUTH 11420 11520 11620 11740 12840 11830 11820. Waves 1
to 3 feet building to 5 to 8 feet tonight. Waves 6 to 9 feet
Friday.



DDV

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

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