157
FZUS61 KBUF 032002
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 PM EDT Wed Sep 3 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 30.0 inch high will move east into the Atlantic
tonight. A 29.3 inch low will then reach northwest Ontario province
tonight and stall through Friday, with its trailing cold front
crosses the lower Great Lakes Thursday. Another 29.3 inch low will
cross the central Great Lakes Friday, pushing a secondary cold front
east across the lake Friday night. The two low pressure systems will
then merge over northern Quebec Saturday.

LOZ062-040300-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 PM EDT Wed Sep 3 2025

.TONIGHT...Southeast winds 10 to 15 knots becoming south 15 to
20 knots. Waves 1 to 3 feet.
.THURSDAY...South winds 15 to 20 knots becoming west. Showers
likely early, then showers with a chance of thunderstorms. A
chance of showers and thunderstorms late. Waves 2 to 4 feet.
.THURSDAY NIGHT...West winds 5 to 15 knots becoming southwest.
Waves 1 to 3 feet.
.FRIDAY...South winds 10 to 15 knots becoming southwest and
increasing to 15 to 25 knots. Waves 1 to 3 feet building to 4 to
7 feet. Waves occasionally around 9 feet.
.FRIDAY NIGHT...Southwest winds 15 to 25 knots becoming west.
Scattered showers overnight. Waves 4 to 7 feet subsiding to 2 to
4 feet. Waves occasionally around 9 feet.
.SATURDAY...West winds 10 to 15 knots. Scattered showers during
the day. Waves 2 to 4 feet.
.SUNDAY...West winds 10 to 15 knots becoming northwest. Waves
1 to 3 feet.
.MONDAY...Northwest winds 5 to 10 knots becoming southeast. Waves
2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-040300-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 PM EDT Wed Sep 3 2025

.TONIGHT...Southeast winds 5 to 10 knots becoming south and
increasing to 15 to 20 knots. Waves 1 foot or less building to
3 to 5 feet.
.THURSDAY...South winds 15 to 25 knots becoming west. Showers
likely late in the morning. Showers with a chance of
thunderstorms in the afternoon. Waves 3 to 5 feet subsiding to
2 to 4 feet.
.THURSDAY NIGHT...West winds 15 to 20 knots becoming southwest
5 to 15 knots. Showers likely in the evening. Waves 2 to 4 feet
subsiding to 1 to 3 feet.
.FRIDAY...South winds 5 to 15 knots becoming southwest 15 to
20 knots. Waves 1 to 3 feet.
.FRIDAY NIGHT...Southwest winds 15 to 20 knots becoming west.
Scattered showers. Waves 2 to 4 feet.
.SATURDAY...West winds 10 to 15 knots. Scattered showers during
the day. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.SUNDAY...West winds 10 to 15 knots becoming northwest. Waves
1 to 3 feet.
.MONDAY...Northwest winds 5 to 10 knots becoming south. Waves
2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-040300-
MAFOR 0321/
ONTARIO WEST 1/2 11300 11310 11410 13420 11526 11610. A chance of
thunderstorms Thursday afternoon. Waves 1 to 3 feet building to 2
to 4 feet tonight. Waves 2 to 4 feet Thursday.

ONTARIO EAST 1/2 11300 11310 12420 12430 11420 11526. A chance of
thunderstorms Thursday afternoon. Waves 1 foot or less building
to 3 to 5 feet tonight. Waves 3 to 5 feet subsiding to 2 to 4
feet Thursday.

$$