FZUS61 KBUF 030802
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 AM EDT Sun May 3 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 29.7 inch low well southeast of Maine will deepen to
28.8 inches as it tracks to Atlantic Canada through tonight, while a
30.2 inch high centered over the Tennessee Valley slides east and
off the Carolina coast. A 29.1 inch low over western Ontario
Province Monday will then weaken to 29.3 inches as it moves to
northern Quebec through Tuesday, with its trailing wavy cold front
slowly crossing the lake Tuesday, then drifting across New England
through Wednesday.

LOZ062-031500-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 AM EDT Sun May 3 2026

.TODAY...West winds 5 to 15 knots becoming southwest 15 to
20 knots. A chance of rain showers late. Waves 1 to 3 feet.
.TONIGHT...Southwest winds 15 to 20 knots. A chance of showers in
the evening. Waves 2 to 4 feet building to 3 to 6 feet.
.MONDAY...Southwest winds 15 to 20 knots. Waves 3 to 5 feet.
.MONDAY NIGHT...Southwest winds 15 to 20 knots. A chance of
showers overnight. Waves 3 to 5 feet.
.TUESDAY...Southwest winds 15 to 20 knots becoming northwest
10 to 15 knots. Showers. Waves 3 to 5 feet subsiding to 1 to
2 feet.
.WEDNESDAY...Northwest winds 10 knots or less. Showers during the
day. Waves 1 foot or less.
.THURSDAY...Northwest winds 10 knots or less becoming west 10 to
15 knots. A chance of showers. Waves 2 feet or less.

$$

LOZ063>065-031500-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 AM EDT Sun May 3 2026

.TODAY...West winds 5 to 15 knots becoming southwest. Waves 1 to
3 feet.
.TONIGHT...Southwest winds 10 to 15 knots increasing to 15 to
20 knots. A chance of showers. Waves 1 to 3 feet building to 3 to
5 feet.
.MONDAY...Southwest winds 15 to 20 knots diminishing to 10 to
15 knots. A chance of showers in the morning. Waves 3 to 5 feet
subsiding to 1 to 3 feet.
.MONDAY NIGHT...South winds 10 to 15 knots increasing to 15 to
20 knots. Waves 1 to 3 feet building to 2 to 4 feet.
.TUESDAY...Southwest winds 15 to 20 knots becoming west 10 to
15 knots. Showers likely with a chance of thunderstorms during
the day, then showers Tuesday night. Waves 2 to 4 feet subsiding
to 1 to 3 feet.
.WEDNESDAY...West winds 5 to 10 knots. Showers during the day,
then a chance of showers Wednesday night. Waves 2 feet or less.
.THURSDAY...West winds 5 to 15 knots increasing to 15 to
20 knots. A chance of showers. Waves 1 to 3 feet building to 2 to
4 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-031500-
MAFOR 0309/
ONTARIO WEST 1/2 11600 11500 12510 14520. A chance of showers
this evening. Waves 1 to 3 feet today. Waves 2 to 4 feet building
to 3 to 6 feet tonight.

ONTARIO EAST 1/2 11610 11600 11610 13510 12520. A chance of
showers this evening. Waves 1 to 3 feet today. Waves 1 to 3 feet
building to 3 to 5 feet tonight.

$$