621
FZUS61 KBUF 311402
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 AM EDT Sun Aug 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 30.2 inch high over the central Great Lakes this
morning will remain in place today before drifting east across New
England on Monday, then into the Canadian Maritimes Tuesday. A
weaker 30.1 inch high will remain in place across the Great Lakes
Tuesday before drifting off the eastern seaboard Wednesday.

LOZ062-312100-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 AM EDT Sun Aug 31 2025

.THIS AFTERNOON...Northwest winds less than 10 knots becoming
west. Waves 1 foot or less.
.TONIGHT...Light and variable winds. Waves 1 foot or less.
.MONDAY...Light and variable winds. Waves 1 foot or less.
.MONDAY NIGHT...East winds less than 10 knots. Waves 1 foot or
less.
.TUESDAY...East winds 10 knots or less becoming southwest. Waves
1 foot or less.
.WEDNESDAY...Southwest winds 5 to 15 knots becoming south 15 to
20 knots. A chance of showers. Waves 1 to 3 feet.
.THURSDAY...South winds 15 to 20 knots becoming west 10 to
15 knots. Showers. Waves 2 to 4 feet.

$$

LOZ063>065-312100-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 AM EDT Sun Aug 31 2025

.THIS AFTERNOON...Northwest winds less than 10 knots becoming
west. Waves 1 foot or less.
.TONIGHT...West winds less than 10 knots. Waves 1 foot or less.
.MONDAY...Light and variable winds. Waves 1 foot or less.
.MONDAY NIGHT...Light and variable winds. Waves 1 foot or less.
.TUESDAY...Light and variable winds becoming south 5 to 10 knots.
Waves 1 foot or less.
.WEDNESDAY...South winds 5 to 15 knots increasing to 15 to
20 knots. A chance of showers. Waves 1 foot or less building to
2 to 4 feet.
.THURSDAY...South winds 15 to 20 knots becoming southwest.
Showers likely with a chance of thunderstorms. Waves 2 to 4 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-312100-
MAFOR 3115/
ONTARIO WEST 1/2 12600 12500 11700 12400 11300. Waves 1 foot or
less.

ONTARIO EAST 1/2 11700 12600 12700 11200 11400 11300. Waves 1
foot or less.

$$