509
FZUS61 KBUF 090803
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 AM EDT Sun Aug 9 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 30.2 inch high will ridge northward across the lower
Great Lakes today. This ridge will then begin to exit eastward, with
a warm front crossing the Lake later tonight, followed by a cold
front moving across the Lake Monday night. Behind the front, a
trough averaging 29.8 inches will linger over the eastern Great
Lakes through this Thursday, with another cold front progged to
sweep across the Lake Wednesday night.

LOZ062-091500-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 AM EDT Sun Aug 9 2026

.TODAY...West winds 5 to 15 knots becoming southwest. Waves
2 feet or less.
.TONIGHT...South winds 10 knots or less. A chance of showers
after midnight. Showers likely late. Waves 1 foot or less.
.MONDAY...Southwest winds 5 to 10 knots becoming west. Showers
likely in the morning, then showers likely with a chance of
thunderstorms in the afternoon. Waves 2 feet or less.
.MONDAY NIGHT...West winds 5 to 10 knots. A chance of showers in
the evening. Waves 1 to 2 feet.
.TUESDAY...West winds 10 knots or less becoming north. Waves
1 foot or less.
.WEDNESDAY...Northwest winds 10 knots or less. A chance of
showers. Waves 1 foot or less.
.THURSDAY...Northwest winds 5 to 15 knots. A chance of showers
during the day. Waves 1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-091500-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 AM EDT Sun Aug 9 2026

.TODAY...West winds 10 to 15 knots. Waves 1 to 3 feet.
.TONIGHT...West winds 5 to 15 knots becoming south. A chance of
showers late. Waves 2 feet or less.
.MONDAY...South winds 10 to 15 knots becoming west. Showers
likely in the morning, then showers likely with a chance of
thunderstorms in the afternoon. Waves 1 to 2 feet.
.MONDAY NIGHT...West winds 10 to 15 knots. A chance of showers
and thunderstorms in the evening. Waves 1 to 2 feet.
.TUESDAY...West winds 5 to 10 knots. Waves 2 feet or less.
.WEDNESDAY...West winds 10 knots or less. A chance of showers.
Waves 1 foot or less.
.THURSDAY...West winds 5 to 15 knots becoming northwest. A chance
of showers. Waves 1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-091500-
MAFOR 0909/
ONTARIO WEST 1/2 13610 11500 14400. A chance of showers
overnight. Waves 1 to 3 feet today. Waves 1 foot or less tonight.

ONTARIO EAST 1/2 14610 11610 11500 12400. Waves 1 to 3 feet
today. Waves 2 feet or less tonight.

$$