Great Lakes Forecast
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180
FZUS61 KBUF 201743
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
143 PM EDT Thu Jul 20 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 weak cool front will cross the lake tonight
followed by a 30.0 inch high settling across the lower Lakes on
Friday. 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.

LOZ062-202115-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
143 PM EDT Thu Jul 20 2017

.THIS AFTERNOON...Northeast winds 10 to 15 knots becoming east.
Showers and thunderstorms. Some thunderstorms may produce gusty
winds. Waves 2 feet or less.
.TONIGHT...Southeast winds 10 to 15 knots becoming west 10 knots
or less. Waves 2 feet or less.
.FRIDAY...West winds 10 to 15 knots. Waves 2 feet or less.
.FRIDAY NIGHT...West winds 5 to 15 knots diminishing to less than
10 knots. Waves 1 foot or less.
.SATURDAY...Southwest winds 10 knots or less becoming east.
Showers likely during the day...then a chance of showers and
thunderstorms Saturday night. Waves 1 foot or less.
.SUNDAY...East winds 5 to 15 knots becoming north. Showers likely
with a chance of thunderstorms during the day...then a chance of
showers and thunderstorms Sunday night. Waves 2 feet or less.
.MONDAY...North winds 5 to 10 knots. Waves 1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-202115-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
143 PM EDT Thu Jul 20 2017

.THIS AFTERNOON...Northwest winds 10 to 15 knots becoming
southwest 15 to 20 knots. Showers and thunderstorms. Some
thunderstorms may produce gusty winds. Waves 1 to 2 feet.
.TONIGHT...South winds 15 to 20 knots becoming west and
diminishing to 5 to 10 knots. Waves 2 feet or less.
.FRIDAY...West winds 10 to 15 knots. Waves 1 to 3 feet.
.FRIDAY NIGHT...West winds 5 to 15 knots. Waves 1 to 2 feet.
.SATURDAY...West winds 10 knots or less becoming east. A chance
of showers during the day...then a chance of showers and
thunderstorms Saturday night. Waves 2 feet or less.
.SUNDAY...East winds 5 to 15 knots becoming north. Showers likely
with a chance of thunderstorms during the day...then a chance of
showers and thunderstorms Sunday night. Waves 2 feet or less.
.MONDAY...North winds 5 to 15 knots. A chance of showers and
thunderstorms. Waves 1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-202115-
MAFOR 2015/
ONTARIO WEST 1/2 11719 11219 11310 11400 12600 12610. Waves 2
feet or less this afternoon and tonight. Waves 1 to 3 feet Friday
morning.

ONTARIO EAST 1/2 12619 11420 12400 11500 12610. Waves 2 feet or
less this afternoon and tonight. Waves 1 to 3 feet Friday
morning.

$$



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