Great Lakes Forecast
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903
FZUS61 KBUF 251050
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
650 AM EDT Sun Jun 25 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 29.8 inch low near Georgian Bay will move to the Ottawa
valley tonight and to Atlantic Canada Monday. Meanwhile, a 30.2
inch high will build into the Ohio Valley today, where it will
remain into Tuesday. This high will eventually build across the
lower Great Lakes by Wednesday. Then a 29.5 inch low is forecast
to move across the Great Lakes region on Thursday.

LOZ062-251515-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
650 AM EDT Sun Jun 25 2017

.TODAY...Southwest winds 10 to 15 knots becoming west 15 to
20 knots. A chance of showers late this morning. Numerous showers
and scattered thunderstorms this afternoon. Waves 1 to 3 feet
building to 2 to 4 feet.
.TONIGHT...West winds 15 to 20 knots diminishing to 10 to
15 knots. A chance of showers through the early overnight. Waves
2 to 4 feet subsiding to 1 to 2 feet.
.MONDAY...West winds 5 to 15 knots becoming south. Scattered
showers in the morning...then showers likely with a chance of
thunderstorms in the afternoon. Waves 2 feet or less.
.MONDAY NIGHT...West winds 10 to 15 knots increasing to 15 to
20 knots. Showers likely with a chance of thunderstorms in the
evening...then a chance of showers overnight. Waves 1 to 3 feet.
.TUESDAY...West winds 15 to 20 knots. A chance of showers and
thunderstorms during the day. Waves 2 to 4 feet subsiding to 1 to
3 feet.
.WEDNESDAY...Southwest winds 15 to 20 knots becoming south 10 to
15 knots. A chance of showers Wednesday night. Waves 1 to 3 feet.
.THURSDAY...South winds 15 to 20 knots becoming southwest 10 to
15 knots. Showers and thunderstorms likely during the day...then
showers likely with a chance of thunderstorms Thursday night.
Waves 1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-251515-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
650 AM EDT Sun Jun 25 2017

.TODAY...Southwest winds 5 to 10 knots becoming west and
increasing to 15 to 20 knots. A chance of showers late this
morning. Scattered showers and thunderstorms this afternoon.
Waves 1 to 3 feet building to 2 to 4 feet.
.TONIGHT...West winds 15 to 20 knots diminishing to 10 to
15 knots. A chance of showers. Waves 2 to 4 feet.
.MONDAY...West winds 5 to 15 knots becoming south. A chance of
showers in the morning...then showers likely with a chance of
thunderstorms in the afternoon. Waves 1 to 3 feet subsiding to
1 foot or less.
.MONDAY NIGHT...Southwest winds 15 to 25 knots. Showers with a
chance of thunderstorms. Waves 2 feet or less building to 3 to
5 feet.
.TUESDAY...Southwest winds 15 to 20 knots becoming west. Showers
likely with a chance of thunderstorms during the day...then a
chance of showers and thunderstorms Tuesday night. Waves 3 to
5 feet subsiding to 2 to 4 feet.
.WEDNESDAY...West winds 15 to 20 knots becoming south 5 to
15 knots. A chance of showers. Waves 2 to 4 feet subsiding to
1 to 3 feet.
.THURSDAY...South winds 10 to 15 knots becoming southwest.
Showers and thunderstorms likely during the day...then showers
likely with a chance of thunderstorms Thursday night. Waves 1 to
3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-251515-
MAFOR 2509/
ONTARIO WEST 1/2 11500 11610 13620 12610 11600. Scattered showers
and thunderstorms this afternoon. A chance of showers this
evening. Waves 1 to 3 feet building to 2 to 4 feet today. Waves 2
to 4 feet subsiding to 1 to 2 feet tonight.

ONTARIO EAST 1/2 11500 11510 14620 11620 11610. Scattered
thunderstorms this afternoon. A chance of showers tonight. Waves
1 to 3 feet building to 2 to 4 feet today. Waves 2 to 4 feet
tonight.

$$



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