Great Lakes Forecast
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000
FZUS61 KBUF 201329
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
929 AM EDT Sun Aug 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 30.1 inch high over western Pennsylvania this
morning will move off the mid-Atlantic coast tonight, where it
will stall through Tuesday. A strong cold front, averaging 29.6
inches, will then cross Lake Ontario Tuesday night. Then a 30.1
inch high will ridge from the Upper Plains to western Ontario
province, expanding into the Great Lakes region on Thursday.

LOZ062-202115-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
929 AM EDT Sun Aug 20 2017

.THIS AFTERNOON...Southwest winds 5 to 10 knots. Waves 1 to
2 feet.
.TONIGHT...Southwest winds 5 to 15 knots. Waves 1 to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots. Waves 1 to 2 feet.
.MONDAY NIGHT...Southwest winds 5 to 15 knots. A chance of
showers and thunderstorms overnight. Waves around 1 foot.
.TUESDAY...Southwest winds 15 to 25 knots becoming northwest.
Showers and thunderstorms. Waves 1 to 3 feet building to 3 to
5 feet.
.WEDNESDAY...Northwest winds 15 to 20 knots. A chance of showers
during the day. Waves 3 to 5 feet.
.THURSDAY...North winds 5 to 15 knots. A chance of showers. Waves
1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-202115-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
929 AM EDT Sun Aug 20 2017

.THIS AFTERNOON...West winds 10 to 15 knots becoming southwest.
Waves 1 to 3 feet.
.TONIGHT...Southwest winds 5 to 15 knots. Waves 1 to 2 feet.
.MONDAY...Southwest winds 10 to 15 knots. Waves 2 feet or less.
.MONDAY NIGHT...Southwest winds 5 to 10 knots becoming south. A
chance of showers and thunderstorms overnight. Waves 2 feet or
less.
.TUESDAY...South winds 10 to 15 knots becoming west and
increasing to 15 to 25 knots. Showers with thunderstorms likely.
Waves 1 to 3 feet building to 3 to 6 feet.
.WEDNESDAY...West winds 15 to 25 knots becoming north. A chance
of showers during the day. Waves 3 to 6 feet.
.THURSDAY...North winds 5 to 15 knots becoming northwest. A
chance of showers. Waves 2 to 4 feet subsiding to 1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-202115-
MAFOR 2015/
ONTARIO WEST 1/2 12500 14510 12500. Waves 1 to 2 feet.

ONTARIO EAST 1/2 12510 12500 13510 11410. Waves 1 to 3 feet.

$$



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