Great Lakes Forecast
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355
FZUS61 KBUF 172047
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
447 PM EDT Thu Aug 17 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 29.5 inch low will move from northern Wisconsin to
eastern Lake Superior by Friday morning before reaching James Bay
Saturday morning, and eventually exiting across northern Quebec
Saturday night. A 30.1 inch high will then build into the Ohio
Valley and eastern Great Lakes Sunday and Monday.

LOZ062-180315-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
447 PM EDT Thu Aug 17 2017

.TONIGHT...East winds 15 to 20 knots becoming south 10 to 15
knots. Showers likely with a chance of thunderstorms through the
early overnight...then a chance of showers and thunderstorms late.
Waves 1 to 3 feet.
.FRIDAY...Southwest winds 10 to 15 knots increasing to 15 to 20
knots. A chance of showers and thunderstorms early...then a chance
of showers late in the morning. Waves 1 to 3 feet.
.FRIDAY NIGHT...Southwest winds 15 to 20 knots becoming west.
Waves 2 to 4 feet.
.SATURDAY...West winds 15 to 20 knots. A chance of showers in the
afternoon. Waves 2 to 4 feet.
.SATURDAY NIGHT...West winds 5 to 15 knots. A chance of showers
in the evening. Waves 1 to 3 feet.
.SUNDAY...West winds 5 to 15 knots becoming southwest. Waves 1 to
2 feet.
.MONDAY...Southwest winds 5 to 10 knots. Waves 1 to 2 feet.
.TUESDAY...Southwest winds 10 to 15 knots becoming west. A chance
of showers during the day...then a chance of showers and
thunderstorms Tuesday night. Waves 1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-180315-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
447 PM EDT Thu Aug 17 2017

.TONIGHT...East winds 10 to 15 knots becoming south 15 to 20
knots. Showers and scattered thunderstorms. Waves 1 to 3 feet
building to 2 to 4 feet.
.FRIDAY...South winds 15 to 20 knots becoming southwest 10 to
15 knots. Showers likely with a chance of thunderstorms in the
morning...then a chance of showers and thunderstorms in the
afternoon. Waves 1 to 3 feet.
.FRIDAY NIGHT...Southwest winds 15 to 20 knots becoming west. A
chance of showers. Waves 1 to 3 feet building to 2 to 4 feet.
.SATURDAY...West winds 15 to 20 knots. A chance of showers. Waves
2 to 4 feet.
.SATURDAY NIGHT...West winds 15 to 20 knots diminishing to 5 to
15 knots. A chance of showers in the evening. Waves 2 to 4 feet
subsiding to 1 to 3 feet.
.SUNDAY...West winds 5 to 15 knots becoming southwest. Waves 1 to
2 feet.
.MONDAY...Southwest winds 5 to 10 knots. Waves 1 to 2 feet.
.TUESDAY...Southwest winds 10 to 15 knots becoming west. A chance
of showers during the day...then a chance of showers and
thunderstorms Tuesday night. Waves 1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-180315-
MAFOR 1721/
ONTARIO WEST 1/2 11226 11216 11316 11410 13510 11520. A chance of
thunderstorms tonight. A chance of showers and thunderstorms
Friday morning. Waves 1 to 3 feet tonight. Waves 2 feet or less
Friday.

ONTARIO EAST 1/2 12216 11326 12426 11520 12510. Scattered showers
early this evening...then scattered thunderstorms tonight. A
chance of showers in the morning...then a chance of showers and
thunderstorms Friday afternoon. Waves 2 feet or less building to
2 to 4 feet tonight. Waves 1 to 3 feet subsiding to 1 foot or
less Friday.

$$



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