287
FZUS61 KBUF 112002
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 PM EDT Mon May 11 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 30.3 inch high will settle from Lake Superior to New
York State by Tuesday morning...then off the east coast by Tuesday
evening. A 29.7 inch low over the central Great Lakes Tuesday night
will then move to the Ottawa Valley Wednesday...before drifting to
the eastern seaboard Thursday...the Gulf of Maine Friday...and the
Canadian Maritimes Saturday.

LOZ062-120300-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 PM EDT Mon May 11 2026

.TONIGHT...West winds 5 to 10 knots becoming north. Waves 1 foot
or less.
.TUESDAY...Light and variable winds becoming east 5 to 10 knots.
Waves 1 foot or less.
.TUESDAY NIGHT...East winds 5 to 10 knots becoming southeast and
increasing to 15 to 20 knots. Showers. Waves 2 feet or less
building to 2 to 3 feet.
.WEDNESDAY...South winds 15 to 20 knots becoming southwest 10 to
15 knots. Showers. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...West winds 10 to 15 knots. Showers likely in
the evening, then a chance of showers overnight. Waves 1 to
3 feet.
.THURSDAY...West winds 5 to 10 knots becoming northwest. A chance
of showers during the day. Waves 1 to 2 feet.
.FRIDAY...Northwest winds 5 to 10 knots becoming southwest. Waves
1 to 2 feet.
.SATURDAY...Southwest winds 10 to 15 knots becoming west. A
chance of showers. Waves 1 to 3 feet.

$$

LOZ063>065-120300-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 PM EDT Mon May 11 2026

.TONIGHT...West winds 5 to 10 knots becoming north. Waves 2 feet
or less.
.TUESDAY...North winds 10 knots or less becoming northeast. Waves
1 foot or less.
.TUESDAY NIGHT...East winds 5 to 15 knots becoming southeast
15 to 20 knots. A chance of showers in the evening, then showers
overnight. Waves 1 to 3 feet.
.WEDNESDAY...Southeast winds 15 to 25 knots becoming southwest
and diminishing to 10 to 15 knots. Showers. Waves 3 to 5 feet
subsiding to 1 to 3 feet.
.WEDNESDAY NIGHT...Southwest winds 5 to 15 knots becoming west.
Showers in the evening, then a chance of showers overnight. Waves
1 to 2 feet.
.THURSDAY...West winds 5 to 10 knots becoming northwest. Waves
1 to 2 feet.
.FRIDAY...Northwest winds 5 to 15 knots becoming west. Waves 1 to
2 feet.
.SATURDAY...Southwest winds 5 to 15 knots becoming west. Waves
1 to 3 feet.

$$

LOZ061-120300-
MAFOR 1121/
ONTARIO WEST 1/2 11600 13700 11800 11700 11800 11100. Waves 2
feet or less.

ONTARIO EAST 1/2 11610 11600 11700 13800 11700 11800. Waves 2
feet or less.

$$