Great Lakes Forecast
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000
FZUS61 KBUF 192033
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
433 PM EDT Sat Aug 19 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 29.6 inch low will move slowly northeast across
Quebec, eventually exiting across northern Quebec tonight. A 30.1
inch high will then build into the Ohio Valley and eastern Great
Lakes Sunday and Monday. A cold front is then forecast to cross
the eastern Great Lakes Tuesday night.

LOZ062-200315-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
433 PM EDT Sat Aug 19 2017

.TONIGHT...West winds 15 to 20 knots diminishing to 10 to 15
knots. Waves 3 to 5 feet subsiding to 1 to 3 feet.
.SUNDAY...West winds 5 to 10 knots becoming southwest. Waves
2 feet or less.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots. Waves 2 feet or
less.
.MONDAY...Southwest winds 5 to 10 knots. Waves 2 feet or less.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. A chance of
showers and thunderstorms overnight. Waves 1 foot or less.
.TUESDAY...Southwest winds 15 to 25 knots becoming northwest.
Showers and thunderstorms likely. Waves 1 to 3 feet building to
3 to 6 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots. A chance of showers
during the day. Waves 4 to 7 feet subsiding to 3 to 5 feet. Waves
occasionally around 9 feet.
.THURSDAY...Northwest winds 5 to 10 knots becoming north. Waves
1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-200315-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
433 PM EDT Sat Aug 19 2017

.TONIGHT...West winds 15 to 20 knots becoming northwest 10 to 15
knots. A chance of showers early. A chance of waterspouts this
evening. Waves 3 to 5 feet subsiding to 2 to 4 feet.
.SUNDAY...West winds 5 to 15 knots. Waves 1 to 3 feet.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots. Waves 2 feet or
less.
.MONDAY...Southwest winds 5 to 15 knots. Waves 2 feet or less.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Waves 1 foot or
less.
.TUESDAY...South winds 10 to 15 knots becoming west and
increasing to 15 to 25 knots. A chance of showers and
thunderstorms during the day...then showers and thunderstorms
Tuesday night. Waves 1 to 3 feet building to 3 to 6 feet.
.WEDNESDAY...West winds 15 to 25 knots becoming northwest and
diminishing to 10 to 15 knots. A chance of showers during the
day. Waves 5 to 8 feet subsiding to 3 to 6 feet. Waves
occasionally around 10 feet.
.THURSDAY...Northwest winds 5 to 10 knots. Waves 1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-200315-
MAFOR 1921/
ONTARIO WEST 1/2 11620 11610 11710 12610 12600 11500. Waves 3 to
5 feet subsiding to 1 to 3 feet tonight. Waves 1 to 3 feet
subsiding to 1 foot or less Sunday.

ONTARIO EAST 1/2 13620 11710 12610 11600 11610. A chance of
waterspouts this evening. Waves 3 to 5 feet subsiding to 2 to 4
feet tonight. Waves 1 to 3 feet Sunday.

$$



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