Great Lakes Forecast
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240
FZUS61 KBUF 151734
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
134 PM EDT Tue Aug 15 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 cold front will cross the lake tonight and this
will be followed by a 30.0 inch high that will build across the
Lower Great Lakes through Wednesday evening. A 29.6 inch low is
forecast to move near Wisconsin late Wednesday night with its
associated warm front moving toward Lake Ontario on Thursday.

LOZ062-152115-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
134 PM EDT Tue Aug 15 2017

.THIS AFTERNOON...West winds less than 10 knots. Waves 1 foot or
less.
.TONIGHT...West winds 10 knots or less becoming north. Waves
2 feet or less.
.WEDNESDAY...North winds 10 to 15 knots becoming east. Waves
2 feet or less.
.WEDNESDAY NIGHT...East winds 10 knots or less becoming southeast.
Waves 1 foot or less.
.THURSDAY...Southeast winds 15 to 25 knots. A chance of showers
and thunderstorms...then showers likely with a chance of
thunderstorms Thursday night. Waves building to 2 to 4 feet.
.FRIDAY...Southwest winds 10 to 15 knots. Showers likely with a
chance of thunderstorms. Waves 1 to 3 feet.
.SATURDAY...West winds 10 to 15 knots. A chance of showers. Waves
1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-152115-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
134 PM EDT Tue Aug 15 2017

.THIS AFTERNOON...West winds 5 to 10 knots. Waves 1 foot or less.
.TONIGHT...West winds 5 to 10 knots becoming north. Waves 2 feet
or less.
.WEDNESDAY...North winds 10 to 15 knots becoming northeast less
than 10 knots. Waves 2 feet or less.
.WEDNESDAY NIGHT...Northeast winds 10 knots or less becoming
southeast. Waves 1 foot or less.
.THURSDAY...Southeast winds increasing to 15 to 25 knots. A
chance of showers during the day...then showers likely with a
chance of thunderstorms Thursday night. Waves building to 2 to 4
feet.
.FRIDAY...Southwest winds 15 to 20 knots. Showers likely with a
chance of thunderstorms. Waves 2 to 4 feet.
.SATURDAY...West winds 10 to 15 knots. A chance of showers. Waves
1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-152115-
MAFOR 1515/
ONTARIO WEST 1/2 13600 12700 12800 11110. Waves 2 feet or less.

ONTARIO EAST 1/2 14600 11600 11700 11810 11110. Waves 2 feet or
less.

$$



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