351
FZUS61 KBUF 220202
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 PM EDT Fri Aug 21 2026

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 30.1 inch high will drift east across the Canadian
Maritimes through Saturday. An elongated 29.7 inch low will slowly
make its way from the central Great Lakes to western Quebec Saturday
and Sunday, while pushing its associated warm and cold fronts across
the lake between Saturday night and Sunday morning. The low will
wobble across western Quebec through Monday, then eject
northeastward into Labrador on Tuesday while a 30.1 inch high builds
eastward across the Ohio Valley.

LOZ062-220900-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 PM EDT Fri Aug 21 2026

.OVERNIGHT...East winds 10 to 15 knots becoming southeast
15 to 20 knots. Waves 1 to 3 feet.
.SATURDAY...Southeast winds 5 to 15 knots becoming east. A chance
of showers and thunderstorms late. Waves 1 to 2 feet.
.SATURDAY NIGHT...Southeast winds 5 to 15 knots becoming
southwest. Showers with a chance of thunderstorms. Waves 1 to
2 feet.
.SUNDAY...Southwest winds 10 to 15 knots becoming west 15 to
20 knots. Showers likely in the morning, then showers with a
chance of thunderstorms in the afternoon. Waves 1 to 3 feet
building to 3 to 5 feet.
.SUNDAY NIGHT...West winds 15 to 20 knots. Showers with a chance
of thunderstorms in the evening, then a chance of showers
overnight. Waves 3 to 5 feet.
.MONDAY...West winds 15 to 20 knots diminishing to 10 to
15 knots. A chance of showers. Waves 3 to 5 feet subsiding to
2 to 4 feet.
.TUESDAY...West winds 5 to 15 knots becoming southwest. Waves
1 to 3 feet subsiding to 1 foot or less.
.WEDNESDAY...Southwest winds 10 knots or less becoming south. A
chance of showers Wednesday night. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-220900-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 PM EDT Fri Aug 21 2026

.OVERNIGHT...East winds 10 to 15 knots becoming southeast
15 to 20 knots. Waves 1 to 3 feet building to 2 to 4 feet.
.SATURDAY...Southeast winds 15 to 20 knots diminishing to 5 to
15 knots. A chance of showers and thunderstorms late. Waves 2 to
4 feet subsiding to 1 foot or less.
.SATURDAY NIGHT...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.
.SUNDAY...South winds 15 to 20 knots becoming west. Showers with
a chance of thunderstorms. Waves 2 to 4 feet building to 3 to
5 feet.
.SUNDAY NIGHT...West winds 15 to 20 knots. Showers with a chance
of thunderstorms in the evening, then showers overnight. Waves
3 to 6 feet.
.MONDAY...West winds 15 to 25 knots. Showers with a chance of
thunderstorms. Waves 3 to 6 feet.
.TUESDAY...West winds 15 to 20 knots diminishing to 5 to
15 knots. A chance of showers during the day. Waves 2 to 4 feet
subsiding to 1 to 3 feet.
.WEDNESDAY...Southwest winds 10 knots or less becoming south
10 to 15 knots. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-220900-
MAFOR 2203/
ONTARIO WEST 1/2 13310 12300 12200 11306. A chance of
thunderstorms Saturday afternoon and Saturday evening. Waves 1 to
3 feet.

ONTARIO EAST 1/2 11210 12320 12310 12300 11310. A chance of
showers and thunderstorms Saturday evening. Waves 1 to 3 feet
building to 2 to 4 feet overnight. Waves 2 to 4 feet subsiding to
1 foot or less Saturday. Waves 2 feet or less Saturday evening.

$$