Great Lakes Forecast
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000
FZUS61 KBUF 202031
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
431 PM EDT Tue Jun 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 29.4 inch low will cross northern Quebec through tonight.
Then a weak 29.9 inch high over the Upper Ohio Valley Wednesday
and Wednesday night will nose north across the Lower Great Lakes.
As this high moves east on Thursday...a warm front will push
across the lake...followed by a cold front which will cross the
lake on Friday. Then a weak 30.0 inch high will ridge from the
Ohio River Valley to Lake Erie over the weekend.

LOZ062-210330-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
431 PM EDT Tue Jun 20 2017

.TONIGHT...West winds 10 to 15 knots. A chance of showers and
thunderstorms early...then showers likely with a chance of
thunderstorms. A chance of showers and thunderstorms late. Some
thunderstorms may produce gusty winds. Waves 1 to 3 feet.
.WEDNESDAY...West winds 10 to 15 knots. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...West winds 10 knots or less becoming
southwest. Waves 2 feet or less.
.THURSDAY...South winds 10 knots or less increasing to 10 to
15 knots. A chance of showers in the afternoon. Waves 1 foot or
less.
.THURSDAY NIGHT...South winds 10 to 15 knots becoming southwest
15 to 20 knots. A chance of showers in the evening...then showers
likely with a chance of thunderstorms overnight. Waves 2 feet or
less building to 2 to 4 feet.
.FRIDAY...Southwest winds 15 to 20 knots becoming northwest and
diminishing to 5 to 10 knots. Showers likely with a chance of
thunderstorms during the day...then a chance of showers Friday
night. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.SATURDAY...Northwest winds 5 to 15 knots becoming west. A chance
of showers Saturday night. Waves 1 to 3 feet.
.SUNDAY...West winds 5 to 10 knots. A chance of showers. Waves
1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-210330-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
431 PM EDT Tue Jun 20 2017

.TONIGHT...West winds 15 to 20 knots. A chance of showers and
thunderstorms early...then showers likely with a chance of
thunderstorms. A chance of showers and thunderstorms late. Some
thunderstorms may produce gusty winds. Waves 1 to 3 feet.
.WEDNESDAY...West winds 15 to 20 knots diminishing to 10 to
15 knots. Waves 2 to 3 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots. Waves 1 to 3 feet.
.THURSDAY...Southwest winds 5 to 10 knots becoming southeast. A
chance of showers in the afternoon. Waves 2 feet or less.
.THURSDAY NIGHT...South winds 10 to 15 knots becoming southwest
15 to 20 knots. A chance of showers in the evening...then showers
likely with a chance of thunderstorms overnight. Waves 1 to
3 feet building to 2 to 4 feet.
.FRIDAY...Southwest winds 15 to 20 knots becoming west 10 to
15 knots. Showers likely with a chance of thunderstorms. Waves
2 to 4 feet.
.SATURDAY...West winds 15 to 20 knots diminishing to 5 to
10 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.SUNDAY...West winds 5 to 15 knots. A chance of showers. Waves
1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-210330-
MAFOR 2021/
ONTARIO WEST 1/2 11610 12616 14610 11610. A chance of showers and
thunderstorms early this evening...then a chance of thunderstorms
tonight. Waves 1 to 3 feet.

ONTARIO EAST 1/2 11620 11626 12516 11620 13610. A chance of
thunderstorms tonight. Waves 1 to 3 feet.

$$


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