256
FZUS61 KBUF 260232
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1032 PM EDT Fri Apr 25 2025

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 29.9 inch low will pass over or just north of Lake
Ontario tonight, with a cold front moving across the lake late,
before the low moves down the Saint Lawrence Valley on Saturday.
A 30.4 inch high will build east across the Great Lakes Saturday
night through Sunday. The high will move east of the lake Monday.
A 29.3 inch surface low will cross Quebec Tuesday, with a cold
front pushing across the Lake Tuesday evening.

LOZ062-260945-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1032 PM EDT Fri Apr 25 2025

.OVERNIGHT...East winds 5 to 10 knots becoming southwest.
Showers likely. Waves 1 to 2 feet.
.SATURDAY...West winds 10 to 15 knots increasing to 15 to
25 knots. A chance of showers in the morning. Waves around 1 foot
building to 4 to 7 feet. Waves occasionally around 9 feet.
.SATURDAY NIGHT...West winds 20 to 25 knots becoming northwest.
Waves 4 to 7 feet. Waves occasionally around 9 feet.
.SUNDAY...Northwest winds 15 to 20 knots becoming west 10 to
15 knots. Waves 4 to 7 feet subsiding to 2 to 4 feet. Waves
occasionally around 9 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots. Waves 1 to 3 feet
subsiding to 1 foot or less.
.MONDAY...Southwest winds 10 knots or less becoming south. Waves
2 feet or less.
.TUESDAY...Southwest winds 15 to 25 knots becoming west. Showers
likely with a chance of thunderstorms. Waves 2 to 4 feet building
to 5 to 8 feet. Waves occasionally around 10 feet.
.WEDNESDAY...Northwest winds 15 to 20 knots becoming northeast
and diminishing to 5 to 10 knots. Waves 3 to 6 feet subsiding to
1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-260945-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1032 PM EDT Fri Apr 25 2025

.OVERNIGHT...East winds 5 to 10 knots becoming south.
Showers. Waves 2 feet or less.
.SATURDAY...Southwest winds 5 to 10 knots becoming west and
increasing to 30 knots in the afternoon. A chance of showers.
Waves 1 foot or less building to 7 to 10 feet. Waves occasionally
around 13 feet.
.SATURDAY NIGHT...West winds to 30 knots becoming northwest. A
chance of showers in the evening, then showers likely overnight.
Waves 6 to 10 feet subsiding to 5 to 8 feet. Waves occasionally
around 13 feet.
.SUNDAY...Northwest winds 15 to 25 knots becoming west and
diminishing to 10 to 15 knots. Showers likely in the morning.
Waves 5 to 8 feet subsiding to 3 to 6 feet. Waves occasionally
around 10 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots. Waves 2 to 4 feet
subsiding to 1 to 3 feet.
.MONDAY...Southwest winds 10 knots or less becoming south and
increasing to 15 to 20 knots. Waves 1 to 3 feet.
.TUESDAY...South winds 15 to 25 knots becoming west. Showers
likely with a chance of thunderstorms. Waves 1 to 3 feet building
to 4 to 7 feet. Waves occasionally around 9 feet.
.WEDNESDAY...Northwest winds 15 to 20 knots becoming northeast
5 to 15 knots. Waves 4 to 7 feet subsiding to 2 feet or less.
Waves occasionally around 9 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-260945-
MAFOR 2603/
ONTARIO WEST 1/2 11200 11300 11600 11620 13630 11730. A chance of
showers overnight and Saturday morning. Waves 1 to 2 feet
overnight. Waves around 1 foot building to 5 to 8 feet, and
occasionally around 10 feet Saturday. Waves 5 to 8 feet, and
occasionally around 10 feet Saturday evening.

ONTARIO EAST 1/2 11206 11406 11500 11620 11630 11640 12630. Waves
2 feet or less overnight. Waves 1 foot or less building to 7 to
10 feet, and occasionally around 13 feet Saturday. Waves 7 to 10
feet, and occasionally around 13 feet Saturday evening.

$$

AR