Great Lakes Forecast
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053
FZUS61 KBUF 180242
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1042 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 upper Michigan to
southern Ontario by Friday afternoon 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.

LOZ062-180915-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1042 PM EDT Thu Aug 17 2017

.OVERNIGHT...Southeast winds 10 to 15 knots becoming south.
Occasional showers with a chance of thunderstorms...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 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>065-180915-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1042 PM EDT Thu Aug 17 2017

.OVERNIGHT...Southeast winds 10 to 15 knots becoming south
15 to 20 knots. Showers with a chance of 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.

$$

LOZ061-180915-
MAFOR 1803/
ONTARIO WEST 1/2 11316 11410 13510 12520 11620. A chance of
thunderstorms late this evening...then a chance of showers and
thunderstorms overnight. A chance of showers and thunderstorms
Friday morning. Waves 1 to 3 feet overnight and Friday. Waves 2
to 4 feet Friday evening.

ONTARIO EAST 1/2 11316 12426 11520 13510 11520. A chance of
thunderstorms overnight. A chance of showers and thunderstorms
Friday. Waves 1 to 2 feet building to 2 to 4 feet overnight.
Waves 1 to 3 feet Friday and Friday evening.

$$



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