Great Lakes Forecast
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618
FZUS61 KBUF 221435
GLFLO

GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1030 AM 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.

LOZ062-222100-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1030 AM EDT Sat Jul 22 2017

.THIS AFTERNOON...Light and variable winds. A chance of showers
this afternoon. Waves 1 foot or less.
.TONIGHT...East winds 10 knots or less becoming northeast 10 to
15 knots. A chance of showers early. Waves 2 feet or less.
.SUNDAY...East winds 15 to 20 knots. A chance of showers and
thunderstorms in the morning...then showers and thunderstorms
likely in the afternoon. Some thunderstorms may produce gusty
winds in the afternoon. Waves 1 to 3 feet building to 2 to
4 feet.
.SUNDAY NIGHT...East winds 15 to 20 knots becoming northeast and
diminishing to 5 to 10 knots. Showers likely with a chance of
thunderstorms in the evening...then a chance of showers and
thunderstorms overnight. Waves 2 to 4 feet building to 3 to
5 feet...then subsiding to 2 to 4 feet.
.MONDAY...North winds 5 to 15 knots becoming northeast. A chance
of showers and thunderstorms. Waves 1 to 3 feet.
.TUESDAY...Northeast winds 10 to 15 knots becoming southeast
10 knots or less. Waves 1 to 3 feet subsiding to 1 foot or less.
.WEDNESDAY...South winds 5 to 10 knots becoming southwest. A
chance of showers and thunderstorms. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-222100-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1030 AM EDT Sat Jul 22 2017

.THIS AFTERNOON...West winds less than 10 knots. A chance of
showers. Waves 1 foot or less.
.TONIGHT...North winds 10 knots or less becoming northeast 10 to
15 knots. Waves 1 foot or less building to 1 to 3 feet.
.SUNDAY...East winds 10 to 15 knots becoming northeast 15 to
20 knots. A chance of showers in the morning...then showers and
thunderstorms likely in the afternoon. Some thunderstorms may
produce gusty winds in the afternoon. Waves 1 to 3 feet building
to 2 to 4 feet.
.SUNDAY NIGHT...Northeast winds 15 to 25 knots becoming east and
diminishing to 10 to 15 knots. Showers likely with a chance of
thunderstorms. Waves 3 to 5 feet subsiding to 2 to 4 feet.
.MONDAY...Northwest winds 5 to 15 knots becoming northeast 15 to
20 knots. Showers likely with a chance of thunderstorms during
the day...then a chance of showers and thunderstorms Monday
night. Waves 1 to 3 feet.
.TUESDAY...Northeast winds 5 to 15 knots becoming southeast
10 knots or less. Waves 1 to 3 feet subsiding to 1 foot or less.
.WEDNESDAY...South winds 5 to 15 knots becoming southwest. A
chance of showers and thunderstorms Wednesday night. Waves 2 feet
or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-222100-
MAFOR 2215/
ONTARIO WEST 1/2 12500 11200 12100 11110 11210 11220. A chance of
thunderstorms Sunday morning. Waves 2 feet or less this afternoon
and tonight. Waves 1 to 3 feet Sunday morning.

ONTARIO EAST 1/2 12600 11700 11100 13110 11210. Waves 1 foot or
less this afternoon. Waves 1 foot or less building to 1 to 3 feet
tonight and Sunday morning.

$$



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