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000
FZUS61 KBUF 200534
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
134 AM 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 ridge of high pressure averaging 30.0 inches
will move over the lake overnight before departing to the east
Thursday. A weak cool front will then cross the lake Thursday
night...with high pressure then settling across the lower Lakes on
Friday. A frontal boundary will develop across the region over
the weekend, and a low pressure system will track along this
boundary into the lower Great Lakes Sunday.

LOZ062-200915-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
134 AM EDT Thu Jul 20 2017

.OVERNIGHT...Northwest winds 5 to 10 knots becoming west. Waves 1
foot or less.
.THURSDAY...West winds 5 to 15 knots becoming east. A chance of
showers and thunderstorms late. Waves 1 foot or less.
.THURSDAY NIGHT...East winds 5 to 15 knots becoming northwest. A
chance of showers and thunderstorms in the evening. Waves 1 foot
or less.
.FRIDAY...Northwest winds 5 to 15 knots becoming west. Waves 2
feet or less.
.FRIDAY NIGHT...West winds 5 to 15 knots diminishing to less than
10 knots. Waves 2 feet or less.
.SATURDAY...Southwest winds 5 to 10 knots becoming southeast.
Showers and thunderstorms likely during the day...then a chance
of showers and thunderstorms Saturday night. Waves 2 feet or
less.
.SUNDAY...Southeast winds 10 knots or less becoming north. A
chance of showers and thunderstorms. Waves 2 feet or less.
.MONDAY...North winds 10 knots or less becoming northwest 10 to
15 knots. A chance of showers and thunderstorms during the day.
Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-200915-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
134 AM EDT Thu Jul 20 2017

.OVERNIGHT...West winds 5 to 10 knots. Waves 1 foot or less.
.THURSDAY...West winds 5 to 15 knots becoming east. Waves 2 feet
or less.
.THURSDAY NIGHT...East winds 5 to 15 knots becoming northwest. A
chance of showers and thunderstorms in the evening...then a
chance of showers overnight. Waves 1 foot or less.
.FRIDAY...Northwest winds 5 to 15 knots becoming west. Waves
2 feet or less.
.FRIDAY NIGHT...West winds 5 to 15 knots. Waves 1 to 2 feet.
.SATURDAY...Southwest winds 10 knots or less becoming southeast
10 to 15 knots. A chance of showers and thunderstorms. Waves
2 feet or less.
.SUNDAY...Southeast winds 5 to 15 knots becoming north. A chance
of showers and thunderstorms. Waves 2 feet or less.
.MONDAY...South winds 5 to 15 knots becoming west. A chance of
showers and thunderstorms during the day...then a chance of
showers Monday night. Waves 1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-200915-
MAFOR 2003/
ONTARIO WEST 1/2 11700 12600 11610 11500 11200 11210 11110. A
chance of showers and thunderstorms Thursday afternoon and
Thursday evening. Waves 1 foot or less.

ONTARIO EAST 1/2 13600 12610 11510 11210 11310. A chance of
showers and thunderstorms Thursday evening. Waves 2 feet or less.

$$



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