120
FZUS61 KBUF 312001
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
401 PM EDT Sat May 31 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 29.0 inch low over New England this evening will
slowly fill to 29.3 inches as it pushes further north across Quebec
tonight and Sunday. Behind this system, a 29.9 inch high will build
south across the upper Great Lakes Sunday, strengthening to 30.1
inches while building southeast across the lower Great Lakes and
Ohio Valley through Monday. The area of high pressure will then
center along the East Coast on Tuesday and Wednesday.

LOZ062-010300-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
401 PM EDT Sat May 31 2025

.TONIGHT...Northwest winds 15 to 20 knots becoming west. Waves
3 to 5 feet subsiding to 2 to 4 feet.
.SUNDAY...West winds 15 to 20 knots diminishing to 10 to
15 knots. A chance of showers early in the afternoon. Waves 3 to
5 feet subsiding to 2 to 4 feet.
.SUNDAY NIGHT...West winds 10 to 15 knots. Waves 1 to 3 feet.
.MONDAY...West winds 10 to 15 knots becoming southwest. Waves
1 to 3 feet.
.MONDAY NIGHT...Southwest winds 10 to 15 knots. Waves 1 to
2 feet.
.TUESDAY...Southwest winds 10 to 15 knots becoming south 15 to
20 knots. Waves 1 to 3 feet.
.WEDNESDAY...Southwest winds 15 to 20 knots diminishing to 10 to
15 knots. A chance of showers and thunderstorms Wednesday night.
Waves 2 to 4 feet subsiding to 1 to 3 feet.
.THURSDAY...Southwest winds 10 to 15 knots. A chance of showers.
Waves 1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-010300-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
401 PM EDT Sat May 31 2025

.TONIGHT...West winds 15 to 20 knots becoming northwest. Waves
3 to 6 feet.
.SUNDAY...West winds 15 to 20 knots. A chance of showers early in
the afternoon. Waves 3 to 6 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots becoming southwest.
Waves 3 to 5 feet subsiding to 1 to 3 feet.
.MONDAY...West winds 10 to 15 knots. Waves 1 to 3 feet.
.MONDAY NIGHT...Southwest winds 5 to 15 knots becoming south.
Waves 1 to 2 feet.
.TUESDAY...South winds 5 to 15 knots. Waves 1 to 3 feet.
.WEDNESDAY...South winds 10 to 15 knots becoming southwest. A
chance of showers and thunderstorms Wednesday night. Waves 1 to
3 feet.
.THURSDAY...Southwest winds 10 to 15 knots. A chance of showers.
Waves 1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-010300-
MAFOR 3121/
ONTARIO WEST 1/2 13720 14620 11620. Waves 3 to 5 feet subsiding
to 2 to 4 feet tonight. Waves 3 to 5 feet Sunday.

ONTARIO EAST 1/2 11620 13720 14620. Waves 2 to 4 feet building to
3 to 6 feet tonight. Waves 3 to 6 feet Sunday.

$$