FZUS61 KBUF 290802
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 AM EDT Wed Apr 29 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...An elongated 29.9 inch low over the Upper Ohio Valley
will deepen to 29.7 inches as it tracks to near Watertown by early
this evening. This low will then lift out across Quebec tonight and
Thursday while another 29.6 inch low develops and tracks northeast
off the mid-Atlantic and New England coastlines. This second low
will then retrograde northward and then northwestward across the
Canadian Maritimes and Quebec respectively Friday and Saturday. A
third 29.5 inch low will then track from the southeastern states
northeastward into the western Atlantic Saturday through Sunday...
while a 29.8 inch high ridges across the Lower Great Lakes.

LOZ062-291500-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 AM EDT Wed Apr 29 2026

.TODAY...North winds 5 to 15 knots. Rain this afternoon. Waves
2 feet or less.
.TONIGHT...Northwest winds 10 to 15 knots becoming west 15 to
20 knots. Rain in the evening, then a chance of showers after
midnight. Waves 2 to 4 feet.
.THURSDAY...West winds 15 to 20 knots. Waves 2 to 4 feet.
.THURSDAY NIGHT...Northwest winds 15 to 20 knots becoming west
10 to 15 knots. Waves 2 to 4 feet.
.FRIDAY...West winds 10 to 15 knots. Waves 2 to 4 feet.
.SATURDAY...West winds 10 to 15 knots. Waves 1 to 3 feet.
.SUNDAY...Southwest winds 15 to 20 knots becoming west 10 to
15 knots. Waves 1 to 3 feet.

$$

LOZ063>065-291500-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 AM EDT Wed Apr 29 2026

.TODAY...East winds 5 to 15 knots becoming north. Rain this
afternoon. Waves 2 feet or less.
.TONIGHT...Northwest winds 10 to 15 knots becoming west 15 to
20 knots. Rain through the early overnight, then a chance of
showers late. Waves 2 feet or less building to 3 to 5 feet.
.THURSDAY...West winds 15 to 25 knots. A chance of rain showers
in the morning. Waves 3 to 6 feet building to 4 to 7 feet. Waves
occasionally around 9 feet.
.THURSDAY NIGHT...West winds 15 to 20 knots diminishing to 10 to
15 knots. Waves 4 to 7 feet subsiding to 2 to 4 feet. Waves
occasionally around 9 feet.
.FRIDAY...West winds 10 to 15 knots increasing to 15 to 20 knots.
Waves 1 to 3 feet building to 3 to 6 feet.
.SATURDAY...West winds 10 to 15 knots. Waves 2 to 4 feet
subsiding to 1 to 3 feet.
.SUNDAY...West winds 10 to 15 knots becoming southwest. Waves
1 to 3 feet building to 2 to 4 feet.

$$

LOZ061-291500-
MAFOR 2909/
ONTARIO WEST 1/2 12800 12806 12716 12620. Waves 2 feet or less
today. Waves 2 to 4 feet tonight.

ONTARIO EAST 1/2 11500 11200 11100 11806 11816 11716 11626 11620.
Waves 2 feet or less today. Waves 2 feet or less building to 3 to
5 feet tonight.

$$