Great Lakes Forecast
Issued by NWS

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000
FZUS61 KBUF 191148
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
648 AM EST Sun Nov 19 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 29.0 inch low near Watertown will deepen to 28.8
inches as it pushes east across the Saint Lawrence Valley today.
In its wake...expansive high pressure over the southern plains
today will build across the Lower Mississippi Valley tonight...
then will cross the southern states on Monday. A 29.1 inch low
just south of James Bay on Tuesday will push a cold front across
the lake Tuesday night. High pressure over the plains on Wednesday
will then build across the Ohio Valley and Lower Great Lakes
Wednesday night and Thursday.

LOZ062-191615-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
648 AM EST Sun Nov 19 2017

...GALE WARNING IN EFFECT THROUGH THIS EVENING...

.TODAY...Northwest gales to 35 knots. A chance of rain and snow
showers. Waves 9 to 12 feet. Waves occasionally around 15 feet.
.TONIGHT...Northwest winds to 30 knots becoming west. Scattered
snow showers early, then lake effect snow showers likely from
late evening on. Waves 9 to 12 feet subsiding to 6 to 10 feet.
Waves occasionally around 15 feet.
.MONDAY...West winds to 30 knots. Scattered rain and snow showers
in the morning. Waves 5 to 9 feet. Waves occasionally around 11
feet.
.MONDAY NIGHT...Southwest winds to 30 knots. Waves 5 to 8 feet.
Waves occasionally around 10 feet.
.TUESDAY...Southwest winds to 30 knots. Rain showers likely
Tuesday night. Waves 5 to 8 feet. Waves occasionally around 10
feet.
.WEDNESDAY...West winds 15 to 25 knots. Waves 3 to 5 feet.
.THURSDAY...Southwest winds 10 to 15 knots. Waves 1 to 3 feet.

$$

LOZ063>065-191615-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
648 AM EST Sun Nov 19 2017

...GALE WARNING IN EFFECT THROUGH THIS EVENING...

.TODAY...Northwest gales to 35 knots. Rain and snow showers.
Waves 10 to 15 feet. Waves occasionally around 18 feet.
.TONIGHT...Northwest gales to 35 knots diminishing to 30 knots.
Lake effect snow showers. Waves 10 to 14 feet subsiding to 8 to
11 feet. Waves occasionally around 18 feet.
.MONDAY...Northwest winds to 30 knots becoming west. Lake effect
snow with lake effect rain showers likely in the morning, then
lake effect rain in the afternoon. Waves 6 to 10 feet. Waves
occasionally around 13 feet.
.MONDAY NIGHT...Southwest winds 15 to 25 knots. Rain showers
likely in the evening. Waves 5 to 8 feet. Waves occasionally
around 10 feet.
.TUESDAY...Southwest winds to 30 knots. Rain showers likely
Tuesday night. Waves 5 to 8 feet. Waves occasionally around 10
feet.
.WEDNESDAY...Northwest winds 15 to 25 knots. A chance of snow
showers. Waves 4 to 7 feet. Waves occasionally around 9 feet.
.THURSDAY...Southwest winds 10 to 15 knots. A chance of snow and
rain showers Thursday night. Waves 1 to 3 feet.

$$

LOZ061-191615-
MAFOR 1913 AMD/
ONTARIO WEST 1/2...GALE WARNING IN EFFECT...14750 11740 12647. A
chance of rain showers through mid morning, then a chance of rain
and snow showers this afternoon. A chance of lake effect snow
showers this evening. Waves 10 to 13 feet, and occasionally
around 16 feet today. Waves 9 to 13 feet subsiding to 5 to 8
feet, and occasionally around 16 feet tonight.

ONTARIO EAST 1/2...GALE WARNING IN EFFECT...11756 12750 11757
13747. A chance of rain showers through mid morning, then a
chance of rain and snow showers this afternoon. Waves 10 to 15
feet, and occasionally around 19 feet today. Waves 10 to 14 feet
subsiding to 8 to 11 feet, and occasionally around 18 feet
tonight.

$$



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