Great Lakes Forecast
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479
FZUS63 KLOT 141409
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
809 AM CST Thu Dec 14 2017

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 29.4 inches over central Pennsylvania
will continue to the mid Atlantic coast this morning. Weak low
pressure of 29.9 inches will develop over Lake Superior this
evening and deepen to 29.6 inches as it moves just northeast of
Lake Huron Friday evening. High pressure of 30.2 inches will pass
over the lake as it crosses Ontario Friday night and Saturday. The
high will merge with another high, forming a large area of high
averaging 30.4 inches that will extend along the Eastern Seaboard
Sunday.

LMZ261-362-364-366-563-565-567-868-142230-
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-
809 AM CST Thu Dec 14 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Northwest winds 15 to 25 kt becoming west 10 to
20 kt. Chance of snow showers mainly this morning. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft this afternoon.
.TONIGHT...West winds 15 to 25 kt increasing to 30 kt late.
Slight chance of snow showers in the evening...then chance of snow
showers overnight. Waves 3 to 5 ft.
.FRIDAY...Northwest winds to 30 kt. Chance of snow. Waves 4 to 7
ft occasionally to 9 ft.
.FRIDAY NIGHT...Northwest winds to 30 kt becoming north 10 to 20
kt. Chance of snow in the evening. Waves 4 to 7 ft occasionally to
9 ft subsiding to 3 to 5 ft.
.SATURDAY...Northeast winds 10 to 15 kt becoming southeast 10 to
20 kt. Chance of snow in the morning. Waves 1 to 3 ft.
.SATURDAY NIGHT...Southeast winds 10 to 20 kt. Waves 3 to 5 ft.
.SUNDAY...Southeast winds 10 to 20 kt becoming south. Waves 3 to
5 ft.
.MONDAY...West winds 10 to 20 kt becoming southwest 15 to 25 kt.
Waves 1 to 3 ft building to 3 to 5 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-142230-
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-
809 AM CST Thu Dec 14 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Northwest winds 10 to 20 kt. Chance of snow
showers. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4
ft.
.TONIGHT...West winds 15 to 25 kt increasing to 30 kt late.
Slight chance of snow showers in the evening...then chance of
snow showers overnight. Waves 4 to 6 ft occasionally to 8 ft.
.FRIDAY...West winds to 30 kt. Occasional gale force gusts to 35
kt are possible in the afternoon. Chance of snow in the
morning... then chance of flurries in the afternoon. Waves 5 to 8
ft occasionally to 10 ft.
.FRIDAY NIGHT...West winds to 30 kt becoming northwest 10 to 20
kt. Chance of snow. Waves 5 to 8 ft occasionally to 10 ft
subsiding to 4 to 7 ft occasionally to 9 ft.
.SATURDAY...East winds 10 to 15 kt becoming southeast 10 to
20 kt. Chance of snow in the morning. Waves 2 to 4 ft.
.SATURDAY NIGHT...Southeast winds 15 to 25 kt becoming south.
Waves 3 to 5 ft.
.SUNDAY...South winds 10 to 20 kt becoming southwest. Chance of
rain. Waves 3 to 5 ft.
.MONDAY...West winds 10 to 20 kt. Waves 1 to 2 ft building to
1 to 3 ft.

$$
LMZ761-142230-
MAFOR 1416/
MICHIGAN NORTH 11730 12620 14630 11740. Chance of snow showers
late this morning. Chance of snow showers after midnight tonight.
Chance of snow Friday morning. Waves 4 to 6 ft occasionally to 8
ft subsiding to 2 to 4 ft today. Waves 3 to 5 ft occasionally to
7 ft tonight. Waves 4 to 6 ft occasionally to 8 ft Friday morning.


MICHIGAN SOUTH 12720 11620 13630 12640. Chance of snow showers
today. Chance of snow showers after midnight tonight. Chance of
snow Friday morning. Waves 4 to 6 ft occasionally to 8 ft
subsiding to 2 to 4 ft today, then building to 5 to 8 ft
occasionally to 10 ft by Friday morning.

$$

KMD

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

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



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