Great Lakes Forecast
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000
FZUS61 KBUF 211754
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1254 PM EST Tue Nov 21 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 29.1 inch low just south of James Bay will push a
cold front across the lake tonight...then high pressure over the
Plains States will build across the Ohio Valley and Lower Great
Lakes Wednesday and Thursday. A 28.9 inch low is forecast to pass
just north of Lake Superior Friday and into Quebec Saturday which
will push another cold front across the lake.

LOZ062-212215-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1254 PM EST Tue Nov 21 2017

.THIS AFTERNOON...Southwest winds to 30 knots. Waves 5 to 8 feet.
Waves occasionally around 10 feet.
.TONIGHT...West winds 15 to 25 knots. Rain showers likely early,
then rain late in the evening. Rain showers likely after
midnight. Waves 4 to 7 feet subsiding to 3 to 6 feet. Waves
occasionally around 9 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots becoming west. Waves
3 to 6 feet subsiding to 2 to 4 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots becoming southwest.
Waves 2 to 4 feet subsiding to 1 to 3 feet.
.THURSDAY...Southwest winds 10 to 15 knots becoming west 15 to
20 knots. A chance of snow showers Thursday night. Waves 2 to
3 feet building to 3 to 5 feet.
.FRIDAY...West winds 10 to 15 knots becoming southwest and
increasing to 15 to 25 knots. A chance of rain showers Friday
night. Waves 1 to 3 feet building to 4 to 7 feet. Waves
occasionally around 9 feet.
.SATURDAY...Southwest winds 15 to 25 knots becoming northwest.
Rain showers likely during the day, then frequent snow showers
Saturday night. Waves 4 to 7 feet subsiding to 3 to 5 feet. Waves
occasionally around 9 feet.

$$

LOZ063>065-212215-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1254 PM EST Tue Nov 21 2017

.THIS AFTERNOON...Southwest winds 15 to 25 knots. Waves 5 to
8 feet. Waves occasionally around 10 feet.
.TONIGHT...Southwest winds 15 to 25 knots becoming west. A chance
of rain showers early, then rain. Rain showers likely late. Waves
4 to 7 feet subsiding to 3 to 6 feet. Waves occasionally around
9 feet.
.WEDNESDAY...West winds 15 to 25 knots becoming northwest. A
chance of rain showers in the morning. Waves 4 to 7 feet
subsiding to 3 to 6 feet. Waves occasionally around 9 feet.
.WEDNESDAY NIGHT...Northwest winds 15 to 20 knots becoming west
5 to 15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet.
.THURSDAY...Southwest winds 10 to 15 knots becoming west 15 to
20 knots. A chance of snow showers Thursday night. Waves 1 to
3 feet building to 3 to 6 feet.
.FRIDAY...West winds 5 to 10 knots becoming southwest and
increasing to 15 to 25 knots. A chance of rain showers Friday
night. Waves 2 to 4 feet building to 4 to 7 feet. Waves
occasionally around 9 feet.
.SATURDAY...Southwest winds 15 to 25 knots becoming northwest.
Rain showers likely during the day, then frequent snow showers
Saturday night. Waves 4 to 7 feet subsiding to 3 to 6 feet. Waves
occasionally around 9 feet.

$$

LOZ061-212215-
MAFOR 2116/
ONTARIO WEST 1/2 12540 11530 12626 11620 11630 11730. A chance of
showers overnight. Waves 5 to 8 feet, and occasionally around 10
feet this afternoon. Waves 4 to 7 feet subsiding to 3 to 6 feet,
and occasionally around 9 feet tonight. Waves 3 to 6 feet
building to 4 to 7 feet, and occasionally around 9 feet Wednesday
morning.

ONTARIO EAST 1/2 11530 11520 12530 11626 11620 11630 11730. Waves
5 to 8 feet, and occasionally around 10 feet this afternoon.
Waves 4 to 7 feet subsiding to 3 to 6 feet, and occasionally
around 9 feet tonight. Waves 4 to 7 feet, and occasionally around
9 feet Wednesday morning.

$$



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