Great Lakes Forecast
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000
FZUS61 KBUF 180912
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
412 AM 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 today...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.

LOZ062-181600-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
412 AM EST Sat Nov 18 2017

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

.TODAY...Southeast winds 10 to 15 knots becoming south. Occasional
rain. 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>065-181600-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
412 AM EST Sat Nov 18 2017

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

.TODAY...South winds 15 to 20 knots. Rain. 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.

$$

LOZ061-181600-
MAFOR 1810/
ONTARIO WEST 1/2...GALE WARNING IN EFFECT...11316 11416 12410
11316 11416 11636 11756. A chance of rain early this morning. A
chance of rain this afternoon. Waves 1 to 3 feet today building
to 6 to 9 feet, and occasionally around 11 feet tonight.


ONTARIO EAST 1/2...GALE WARNING IN EFFECT...11420 12426 11420
11426 12436 11656. A chance of rain this afternoon. Waves 2 to 4
feet building to 3 to 5 feet today and to 7 to 10 feet tonight.

$$

JJR/RSH



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