Great Lakes Forecast
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000
FZUS61 KBUF 230254
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1054 PM EDT Sat Jul 22 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 frontal boundary will be across the region over the
weekend and a 29.8 inch low will track along this boundary across
the lower Great Lakes Sunday. A 30.2 inch high will then ridge from
Hudson Bay to the Upper Great Lakes Monday and extend across the
Lower Lakes Tuesday.

LOZ062-230915-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1054 PM EDT Sat Jul 22 2017

.OVERNIGHT...Northeast winds 5 to 10 knots. Scattered
showers. Waves 1 foot or less.
.SUNDAY...East winds 10 to 15 knots increasing to 15 to 20 knots.
A chance of showers and thunderstorms in the afternoon. Waves
1 to 3 feet building to 2 to 4 feet.
.SUNDAY NIGHT...East winds 15 to 20 knots. Showers and
thunderstorms likely in the evening...then a chance of showers
and thunderstorms overnight. Waves 3 to 5 feet.
.MONDAY...Northeast winds 5 to 15 knots becoming north. A chance
of showers and thunderstorms. Waves 2 to 4 feet subsiding to 1 to
3 feet.
.MONDAY NIGHT...Northeast winds 10 to 15 knots becoming north. A
chance of showers and thunderstorms in the evening. Waves 1 to
2 feet.
.TUESDAY...Northeast winds 5 to 15 knots becoming southeast.
Waves 1 to 3 feet subsiding to 1 foot or less.
.WEDNESDAY...Southeast winds 5 to 10 knots becoming southwest. A
chance of showers and thunderstorms Wednesday night. Waves 1 foot
or less.
.THURSDAY...West winds 5 to 10 knots becoming north. A chance of
showers and thunderstorms. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-230915-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1054 PM EDT Sat Jul 22 2017

.OVERNIGHT...Northeast winds 10 knots or less increasing to
10 to 15 knots. Scattered showers. Waves 2 feet or less.
.SUNDAY...Northeast winds 10 to 15 knots increasing to 15 to
20 knots. A chance of showers and thunderstorms late. Waves 1 to
3 feet.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots becoming
southeast. Showers likely with a chance of thunderstorms. Waves
2 to 4 feet building to 3 to 5 feet.
.MONDAY...East winds 10 to 15 knots becoming north. Showers
likely with a chance of thunderstorms in the morning...then
showers and thunderstorms likely in the afternoon. Waves 2 to
4 feet subsiding to 1 to 3 feet.
.MONDAY NIGHT...North winds 5 to 15 knots. A chance of showers
and thunderstorms in the evening...then a chance of showers
overnight. Waves 2 feet or less.
.TUESDAY...North winds 5 to 15 knots becoming east. Waves 1 to
3 feet.
.WEDNESDAY...Southeast winds 5 to 15 knots becoming southwest. A
chance of showers and thunderstorms Wednesday night. Waves 2 feet
or less.
.THURSDAY...Southwest winds 5 to 15 knots becoming northwest. A
chance of showers and thunderstorms. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-230915-
MAFOR 2303/
ONTARIO WEST 1/2 12100 11110 11210 14220. Scattered showers late
this evening. A chance of showers and thunderstorms Sunday
afternoon and Sunday evening. Waves 1 foot or less overnight.
Waves 1 to 3 feet building to 2 to 4 feet Sunday. Waves 2 to 4
feet Sunday evening.

ONTARIO EAST 1/2 12100 13110 12120 11126. A chance of showers and
thunderstorms Sunday afternoon. A chance of thunderstorms Sunday
evening. Waves 2 feet or less overnight. Waves 1 to 3 feet
Sunday. Waves 1 to 3 feet building to 2 to 4 feet Sunday evening.

$$



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