Great Lakes Forecast
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000
FZUS61 KBUF 110612
GLFLO

GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1230 AM EST Mon Dec 11 2017

For waters beyond five nautical miles of shore on Lake Ontario

Waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. Occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.SYNOPSIS...A weak ridge of high pressure averaging 30.0 inches will
move across the lake Monday. Another 29.6 inch low will drop across
the lower Great Lakes Tuesday. 30.1 inch high pressure will build
briefly across the lower lakes Wednesday night and Thursday.

LOZ062-111000-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1230 AM EST Mon Dec 11 2017

.OVERNIGHT...Northwest winds 15 to 20 knots becoming north.
Scattered snow showers, then scattered flurries
late. Waves 4 to 7 feet subsiding to 3 to 5 feet. Waves
occasionally around 9 feet.
.MONDAY...North winds 15 to 20 knots becoming east and
diminishing to 10 knots or less in the afternoon. Scattered snow
showers early. Scattered snow showers late. Waves 2 to 4 feet
subsiding to 1 to 3 feet.
.MONDAY NIGHT...Southeast winds 10 to 15 knots. Snow. Waves 1 to
3 feet building to 2 to 4 feet.
.TUESDAY...Southeast winds 10 to 15 knots becoming north 15 to
20 knots. Snow. Waves 1 to 3 feet building to 2 to 4 feet.
.TUESDAY NIGHT...North winds 15 to 20 knots becoming northwest.
Lake effect snow. Waves 3 to 6 feet.
.WEDNESDAY...Northwest winds to 30 knots diminishing to 15 to
20 knots. Lake effect snow showers. Waves 3 to 6 feet subsiding
to 2 to 4 feet.
.THURSDAY...West winds 5 to 15 knots becoming south. A chance of
snow showers. Waves 1 to 3 feet.
.FRIDAY...Southwest winds 10 to 15 knots becoming west. A chance
of snow showers. Waves 2 to 4 feet.

$$

LOZ063>065-111000-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1230 AM EST Mon Dec 11 2017

.OVERNIGHT...West winds 15 to 20 knots becoming northwest.
Lake effect snow, then lake effect snow showers
likely late. Waves 5 to 8 feet. Waves occasionally around
10 feet.
.MONDAY...Northwest winds 15 to 20 knots becoming east and
diminishing to 10 knots or less in the afternoon. Scattered snow
showers in the morning. Waves 3 to 5 feet subsiding to 2 to
4 feet.
.MONDAY NIGHT...Southeast winds 5 to 10 knots increasing to 15 to
20 knots. Snow. Waves 2 feet or less building to 2 to 4 feet.
.TUESDAY...Southeast winds 15 to 20 knots becoming north. Snow.
Waves 2 to 4 feet.
.TUESDAY NIGHT...North winds 15 to 20 knots becoming northwest.
Lake effect snow in the evening, then lake effect snow showers
overnight. Waves 3 to 6 feet building to 5 to 8 feet. Waves
occasionally around 10 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots increasing to
30 knots. Lake effect snow showers. Waves 5 to 8 feet subsiding
to 3 to 6 feet. Waves occasionally around 10 feet.
.THURSDAY...Northwest winds 15 to 20 knots becoming south. A
chance of snow showers. Waves 2 to 4 feet subsiding to 1 to
3 feet.
.FRIDAY...South winds 10 to 15 knots becoming west. A chance of
snow showers. Waves 1 to 3 feet building to 3 to 5 feet.

$$

LOZ061-111000-
MAFOR 1107 AMD/
ONTARIO WEST 1/2 11720 11820 11710 11800 11200 12317. Scattered
snow showers Monday. Waves 3 to 6 feet overnight. Waves 2 to 4
feet subsiding to 1 to 3 feet Monday. Waves 1 to 3 feet Monday
evening.

ONTARIO EAST 1/2 12720 11710 11700 11800 11300 11317. Scattered
lake effect snow showers overnight. Scattered snow showers Monday
morning. Waves 4 to 7 feet, and occasionally around 9 feet
overnight. Waves 3 to 5 feet subsiding to 2 to 4 feet Monday.
Waves 2 feet or less Monday evening.

$$



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