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National Weather Service Marine Forecast FZUS63 KMKX

FZUS63 KMKX 110845
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
245 AM CST Tue Dec 11 2018

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

A broad area of high pressure of 30.4 inches will continue to be
near the Gulf Coast today. Meanwhile, low pressure of 29.9 inches
will move from east of Lake Superior today to Lake Erie by
this evening. Persistent, moderate west winds will continue this
morning with some easing this afternoon as a weak ridge of high
pressure takes hold.

Southeast winds will then develop late tonight and Wednesday, as
a trough of low pressure of 29.9 inches develops from the southern
Rockies into Iowa. A stronger low of 29.6 inches is then expected
to develop over northern Texas on Thursday, lifting into the
eastern US by the end of the week. Depending on the track of this
low, north to northeast winds could affect the southern portions
of Lake Michigan late in the week.

LMZ261-362-364-366-563-565-567-868-111615-
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-
245 AM CST Tue Dec 11 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

TODAY
Northwest winds 10 to 20 kt. Waves 2 to 4 ft subsiding
to 1 to 3 ft.

TONIGHT
Northeast winds 5 to 10 kt becoming southeast late in
the evening, then becoming 10 to 20 kt after midnight becoming
southeast 10 to 20 kt late. Waves 1 to 2 ft building to 3 to
5 ft.

WEDNESDAY
Southeast winds to 30 kt diminishing to 15 to 25 kt.
Chance of snow in the morning, then chance of rain and snow in
the afternoon. Waves 4 to 7 ft occasionally to 9 ft.

WEDNESDAY NIGHT
Southeast winds 15 to 25 kt diminishing to
10 to 20 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to
2 to 4 ft.

THURSDAY
South winds 10 to 20 kt. Waves 2 to 4 ft.

THURSDAY NIGHT
South winds 10 to 20 kt becoming southeast
10 to 15 kt. Chance of rain and snow. Waves 2 to 4 ft.

FRIDAY
East winds 10 to 15 kt increasing to 10 to 20 kt.
Chance of rain and snow. Waves 1 to 3 ft.

SATURDAY
North winds to 30 kt. Waves 4 to 6 ft occasionally to
8 ft. 



LMZ080-669-671-673-675-777-779-870-872-874-876-878-111615-
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-
245 AM CST Tue Dec 11 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

TODAY
West winds 15 to 25 kt becoming northwest 10 to 15 kt.
Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.

TONIGHT
Southeast winds 5 to 10 kt increasing to 15 to 25 kt.
Waves 1 to 3 ft building to 4 to 6 ft occasionally to 8 ft.

WEDNESDAY
Southeast winds to 30 kt becoming southwest 15 to
25 kt. Drizzle likely with a chance of snow in the morning, then
rain likely with a chance of snow in the afternoon. Waves 5 to
8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally to
9 ft.

WEDNESDAY NIGHT
Southwest winds 10 to 20 kt diminishing to
10 to 15 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.

THURSDAY
South winds 10 to 20 kt becoming southeast. Waves
2 to 4 ft.

THURSDAY NIGHT
Southeast winds 10 to 20 kt. Rain likely. Waves
1 to 3 ft.

FRIDAY
East winds 10 to 20 kt becoming northeast. Chance of
rain. Waves 1 to 3 ft.

SATURDAY
North winds to 30 kt. Chance of rain. Waves 5 to 8 ft
occasionally to 10 ft. 



LMZ761-111615-
MAFOR 1110/
MICHIGAN NORTH 11620 13720 11810 11200 11310 11320. Waves 3 to 5
ft subsiding to 2 to 4 ft today. Waves 1 ft or less building to 3
to 5 ft tonight.

MICHIGAN SOUTH 11640 11630 11620 11720 11710 11300 11310 11320.
Waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft
today. Waves 2 to 4 ft building to 3 to 5 ft tonight.


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

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