Great Lakes Forecast
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000
FZUS61 KBUF 190229
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
929 PM EST Sat Nov 18 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 deepening low will cross Lake Ontario overnight,
bottoming out near 28.9 inches as it continues into the Saint
Lawrence Valley Sunday. Expansive high pressure will build across
the Lower Mississippi Valley, then cross the southern states on
Monday.

LOZ062-191015-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
929 PM EST Sat Nov 18 2017

...GALE WARNING IN EFFECT FROM 1 AM EST SUNDAY THROUGH SUNDAY
EVENING...

.OVERNIGHT...South winds 10 to 15 knots becoming northwest
and increasing to 35 knot gales. Occasional rain.
Waves 1 to 3 feet building to 7 to 10 feet. Waves occasionally
around 13 feet.
.SUNDAY...Northwest gales to 35 knots. A chance of rain showers.
Waves 10 to 14 feet. Waves occasionally around 18 feet.
.SUNDAY NIGHT...Northwest gales to 35 knots becoming west and
diminishing to 30 knots overnight. A chance of snow in the
evening, then lake effect snow showers likely overnight. Waves
10 to 14 feet subsiding to 6 to 9 feet. Waves occasionally around
18 feet.
.MONDAY...West winds 15 to 25 knots. A chance of snow showers in
the morning, then a chance of rain showers in the afternoon.
Waves 5 to 8 feet. Waves occasionally around 10 feet.
.MONDAY NIGHT...West winds 15 to 25 knots becoming southwest.
Waves 3 to 6 feet.
.TUESDAY...Southwest winds to 30 knots becoming west and
diminishing to 15 to 20 knots. A chance of rain showers during
the day, then rain showers likely Tuesday night. Waves 4 to
7 feet. Waves occasionally around 9 feet.
.WEDNESDAY...West winds 15 to 20 knots diminishing to 10 to
15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet.
.THURSDAY...West winds 10 to 15 knots. Waves 1 to 3 feet.

$$

LOZ063>065-191015-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
929 PM EST Sat Nov 18 2017

...GALE WARNING IN EFFECT FROM 1 AM EST SUNDAY THROUGH SUNDAY
EVENING...

.OVERNIGHT...South winds 15 to 25 knots becoming west and
increasing to 40 knot gales. Occasional rain.
Waves 3 to 6 feet building to 7 to 10 feet. Waves occasionally
around 13 feet.
.SUNDAY...Northwest gales to 40 knots diminishing to 35 knots.
Lake effect rain. Waves 11 to 16 feet. Waves occasionally around
20 feet.
.SUNDAY NIGHT...Northwest gales to 35 knots diminishing to
30 knots. Lake effect snow. Waves 11 to 16 feet subsiding to
10 to 14 feet. Waves occasionally around 20 feet.
.MONDAY...West winds to 30 knots diminishing to 15 to 25 knots.
Lake effect snow in the morning, then lake effect rain and snow
showers in the afternoon. Waves 5 to 8 feet. Waves occasionally
around 10 feet.
.MONDAY NIGHT...West winds 15 to 25 knots becoming southwest. A
chance of rain showers in the evening. Waves 4 to 7 feet
subsiding to 3 to 6 feet. Waves occasionally around 9 feet.
.TUESDAY...Southwest winds 15 to 25 knots becoming west. A chance
of rain showers during the day, then rain showers likely Tuesday
night. Waves 3 to 6 feet building to 5 to 8 feet. Waves
occasionally around 10 feet.
.WEDNESDAY...West winds 15 to 20 knots becoming northwest 10 to
15 knots. A chance of snow and rain showers during the day, then
a chance of snow showers Wednesday night. Waves 3 to 6 feet
subsiding to 2 to 4 feet.
.THURSDAY...Northwest winds 10 to 15 knots becoming west. A
chance of snow showers. Waves 1 to 3 feet building to 2 to
4 feet.

$$

LOZ061-191015-
MAFOR 1904/
ONTARIO WEST 1/2...GALE WARNING IN EFFECT...11636 11756 14750
11750 11650. Scattered rain showers Sunday. A chance of snow and
rain showers Sunday evening. Waves 2 to 4 feet building to 7 to
10 feet, and occasionally around 13 feet overnight. Waves 10 to
14 feet, and occasionally around 18 feet Sunday and Sunday
evening.

ONTARIO EAST 1/2...GALE WARNING IN EFFECT...11436 11656 14756
11756 11757. Waves 3 to 6 feet building to 6 to 9 feet, and
occasionally around 11 feet overnight. Waves 11 to 16 feet, and
occasionally around 20 feet Sunday and Sunday evening.

$$



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