Great Lakes Forecast
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000
FZUS61 KBUF 211739
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
139 PM EDT Fri Jul 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 30.0 inch high will remain across the Lower Great Lakes
through tonight. A frontal boundary will develop across the
region over the weekend and a 29.8 inch low will track along this
boundary into the lower Great Lakes Sunday. Then a 30.2 inch high
will ridge from Hudson Bay to the Upper Great Lakes Monday then
extend across the Lower Lakes Tuesday.

LOZ062-212115-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
139 PM EDT Fri Jul 21 2017

.THIS AFTERNOON...Southwest winds 5 to 10 knots. Waves 2 feet or
less.
.TONIGHT...West winds 10 knots or less becoming southwest. Waves
1 foot or less.
.SATURDAY...Southwest winds less than 10 knots becoming east
10 to 15 knots. A chance of showers. Waves 1 foot or less
building to 1 to 3 feet.
.SATURDAY NIGHT...Northeast winds 10 to 15 knots becoming east. A
chance of showers in the evening. Waves 2 to 4 feet.
.SUNDAY...East winds 15 to 25 knots becoming northeast. Showers
and thunderstorms likely. Waves 3 to 5 feet subsiding to 1 to
3 feet.
.MONDAY...North winds 15 to 20 knots. A chance of showers and
thunderstorms during the day. Waves 1 to 2 feet.
.TUESDAY...North winds 5 to 15 knots becoming east less than
10 knots. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-212115-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
139 PM EDT Fri Jul 21 2017

.THIS AFTERNOON...West winds 10 to 15 knots. Waves 1 to 3 feet.
.TONIGHT...West winds 5 to 15 knots. Waves 1 to 3 feet.
.SATURDAY...West winds 10 knots or less becoming northeast. A
chance of showers in the afternoon. Waves 1 to 3 feet.
.SATURDAY NIGHT...Northeast winds 10 to 15 knots becoming east. A
chance of showers in the evening. Waves 2 to 4 feet.
.SUNDAY...East winds 15 to 25 knots becoming southeast. A chance
of showers and thunderstorms during the day...then showers and
thunderstorms Sunday night. Waves 2 to 4 feet subsiding to 2 feet
or less.
.MONDAY...Southwest winds 15 to 20 knots becoming north. Showers
likely with a chance of thunderstorms during the day...then a
chance of showers and thunderstorms Monday night. Waves 2 feet or
less.
.TUESDAY...North winds 5 to 15 knots becoming northeast. Waves
1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-212115-
MAFOR 2115/
ONTARIO WEST 1/2 11610 11510 13600 12500 11400. Waves 2 feet or
less.

ONTARIO EAST 1/2 14610 11610 13600. Waves 1 to 3 feet.

$$



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