Great Lakes Forecast
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000
FZUS61 KBUF 182327
GLFLO

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

LOZ062-190415-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
627 PM EST Sat Nov 18 2017

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

.TONIGHT...Southeast winds 10 to 15 knots becoming northwest and
increasing to 35 knot gales after midnight. 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>065-190415-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
627 PM EST Sat Nov 18 2017

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

.TONIGHT...South winds 15 to 25 knots becoming west and
increasing to 40 knot gales after midnight. 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.

$$

LOZ061-190415-
MAFOR 1822 AMD/
ONTARIO WEST 1/2...GALE WARNING IN EFFECT...11316 11426 11636
11756 14750. A chance of rain showers Sunday. Waves 1 to 3 feet
building to 7 to 10 feet, and occasionally around 13 feet
tonight. Waves 10 to 14 feet, and occasionally around 18 feet
Sunday.

ONTARIO EAST 1/2...GALE WARNING IN EFFECT...11426 12436 11656
14756. Waves 3 to 6 feet building to 6 to 9 feet, and
occasionally around 11 feet tonight. Waves 11 to 16 feet, and
occasionally around 20 feet Sunday.

$$



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