Great Lakes Forecast
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000
FZUS61 KBUF 181733
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1233 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 broad 29.4 inch low over Missouri will deepen to
29.1 inches as it tracks to Lake Erie this afternoon...then will
pass across the lake tonight while further deepening to 28.9
inches. As the deep storm exits across the Saint Lawrence Valley
on Sunday...expansive high pressure will build across the Lower
Mississippi Valley...then will cross the southern states on
Monday.

LOZ062-182215-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1233 PM EST Sat Nov 18 2017

...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY
EVENING...

.THIS AFTERNOON...South winds 5 to 10 knots. Rain late. Waves 1 to
2 feet.
.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
in the morning, then a chance of rain and snow showers in the
afternoon. Waves 10 to 13 feet. Waves occasionally around 16
feet.
.SUNDAY NIGHT...Northwest gales to 35 knots becoming west and
diminishing to 30 knots overnight. Lake effect snow showers
likely. Waves 9 to 12 feet subsiding to 5 to 8 feet. Waves
occasionally around 15 feet.
.MONDAY...West winds to 30 knots becoming southwest. A chance of
rain and snow showers during the day. Waves 5 to 9 feet subsiding
to 4 to 7 feet. Waves occasionally around 11 feet.
.TUESDAY...Southwest winds 15 to 25 knots becoming west. A chance
of rain showers Tuesday night. Waves 4 to 7 feet subsiding to 3
to 6 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.

$$

LOZ063>065-182215-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1233 PM EST Sat Nov 18 2017

...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY
EVENING...

.THIS AFTERNOON...South winds 15 to 20 knots. Rain likely late.
Waves 3 to 5 feet.
.TONIGHT...South winds 15 to 25 knots becoming west and
increasing to 35 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 35 knots. Rain in the morning, then
lake effect rain and snow showers likely in the afternoon. 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 10 to 14 feet subsiding to 8 to 11
feet. Waves occasionally around 18 feet.
.MONDAY...West winds to 30 knots becoming southwest 15 to 25
knots. Lake effect snow and lake effect rain during the day, then
rain showers likely Monday night. Waves 6 to 10 feet subsiding to
5 to 8 feet. Waves occasionally around 13 feet.
.TUESDAY...Southwest winds 15 to 25 knots becoming west. A chance
of rain showers Tuesday night. Waves 4 to 7 feet subsiding to 3
to 6 feet. Waves occasionally around 9 feet.
.WEDNESDAY...West winds 15 to 20 knots becoming northwest 10 to 15
knots. A chance of snow showers. Waves 3 to 5 feet subsiding to 2
to 4 feet.

$$

LOZ061-182215-
MAFOR 1816/
ONTARIO WEST 1/2...GALE WARNING IN EFFECT...12410 11316 11416
11636 11756 12750. A chance of showers Sunday morning. Waves 1 to
3 feet this afternoon. 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 morning.

ONTARIO EAST 1/2...GALE WARNING IN EFFECT...12420 11426 12436
11656 12756. A chance of rain this afternoon. Waves 3 to 5 feet
this afternoon. Waves 3 to 6 feet building to 7 to 10 feet, and
occasionally around 13 feet tonight. Waves 11 to 15 feet, and
occasionally around 19 feet Sunday morning.

$$



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