Great Lakes Forecast
Issued by NWS

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582
FZUS61 KBUF 250120
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
920 PM EDT Sat Jun 24 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 29.3 inch low will remain near Labrador through Sunday. A
secondary 29.8 inch low will develop near Georgian Bay overnight,
moving to the Ottawa valley Sunday night and to Atlantic Canada
Monday. Meanwhile, a 30.2 inch high will into the Ohio Valley
Sunday, 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.

LOZ062-250915-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
920 PM EDT Sat Jun 24 2017

.OVERNIGHT...West winds 5 to 15 knots becoming southwest.
Waves 2 feet or less.
.SUNDAY...West winds 10 to 15 knots increasing to 15 to 20 knots.
A chance of showers early in the afternoon. Showers likely with a
chance of thunderstorms late. Waves 2 feet or less building to
2 to 3 feet.
.SUNDAY NIGHT...West winds 15 to 20 knots becoming northwest
10 to 15 knots. A chance of showers. Waves 1 to 3 feet.
.MONDAY...Northwest winds 10 knots or less becoming southwest. A
chance of showers in the morning...then showers and thunderstorms
likely in the afternoon. Waves 2 feet or less.
.MONDAY NIGHT...West winds 10 knots or less. A chance of showers.
Waves 1 foot or less.
.TUESDAY...West winds 5 to 15 knots. A chance of showers during
the day. Waves 2 feet or less building to 2 to 3 feet.
.WEDNESDAY...Southwest winds 10 to 15 knots becoming south. A
chance of showers and thunderstorms Wednesday night. Waves 1 to
3 feet.
.THURSDAY...South winds 10 to 15 knots becoming west. Showers and
thunderstorms likely. Waves 1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-250915-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
920 PM EDT Sat Jun 24 2017

.OVERNIGHT...West winds 5 to 15 knots. Waves 2 feet or
less.
.SUNDAY...Southwest winds 10 to 15 knots becoming west 15 to
20 knots. A chance of showers in the afternoon. Waves 1 to
3 feet.
.SUNDAY NIGHT...West winds 15 to 20 knots diminishing to 10 to
15 knots. A chance of showers in the evening...then showers
likely with a chance of thunderstorms overnight. Waves 2 to
4 feet.
.MONDAY...Northwest winds 10 knots or less becoming southwest. A
chance of showers in the morning...then showers and thunderstorms
likely in the afternoon. Waves 1 to 3 feet subsiding to 1 foot or
less.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. A chance of
showers. Waves 1 foot or less.
.TUESDAY...West winds 10 to 15 knots increasing to 15 to
20 knots. A chance of showers and thunderstorms during the day...
then a chance of showers Tuesday night. Waves 1 to 3 feet.
.WEDNESDAY...West winds 15 to 20 knots becoming south 5 to
15 knots. A chance of showers during the day...then a chance of
showers and thunderstorms Wednesday night. Waves 2 to 4 feet
subsiding to 1 to 3 feet.
.THURSDAY...South winds 5 to 15 knots becoming west. Showers and
thunderstorms likely. Waves 1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-250915-
MAFOR 2503/
ONTARIO WEST 1/2 11600 11500 11510 12610 13620. A chance of
showers Sunday afternoon and Sunday evening. Waves 1 foot or less
overnight. Waves 1 to 3 feet Sunday. Waves 2 to 4 feet Sunday
evening.

ONTARIO EAST 1/2 12600 12510 11610 13620. A chance of showers
Sunday evening. Waves 2 feet or less overnight. Waves 1 to 3 feet
Sunday. Waves 2 to 4 feet Sunday evening.

$$



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