573
FZUS61 KBUF 291403
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1003 AM EDT Fri May 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...A 30.2 inch high over the central Great Lakes will
settle into the Ohio Valley today. Meanwhile a 29.6 inch low will
make its way southeastward across Quebec today and New England
tonight, with its trailing cold front crossing the lake between late
this afternoon and early this evening. A 30.2 inch high will then
build across the Great Lakes and Ohio Valley Saturday through
Sunday, with a 29.8 inch low forecast to push south across New
England Sunday night and Monday. Another 30.3 inch high will then
build south across the Great Lakes Tuesday.

LOZ062-292100-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1003 AM EDT Fri May 29 2026

.THIS AFTERNOON...Southwest winds 10 to 15 knots becoming west
15 to 20 knots. A chance of showers late. Waves 1 to 2 feet
building to 3 to 5 feet.
.TONIGHT...Northwest winds 15 to 20 knots becoming north 10 to
15 knots. A chance of showers early. Waves 3 to 5 feet subsiding
to 2 to 4 feet.
.SATURDAY...North winds 5 to 15 knots becoming west less than
10 knots. Waves 2 feet or less.
.SATURDAY NIGHT...West winds 10 knots or less. Waves 1 foot or
less.
.SUNDAY...West winds 5 to 15 knots. Waves 2 feet or less.
.MONDAY...North winds 10 knots or less becoming northwest. Waves
1 foot or less.
.TUESDAY...North winds 5 to 10 knots. Waves 2 feet or less.

$$

LOZ063>065-292100-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1003 AM EDT Fri May 29 2026

.THIS AFTERNOON...West winds 15 to 20 knots. A chance of showers
late. Waves 1 to 3 feet building to 3 to 6 feet.
.TONIGHT...Northwest winds 15 to 20 knots becoming north. A
chance of showers early. Waves 3 to 6 feet.
.SATURDAY...North winds 15 to 20 knots becoming northwest 10 to
15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet.
.SATURDAY NIGHT...Northwest winds 10 knots or less becoming west.
Waves 1 foot or less.
.SUNDAY...West winds 10 to 15 knots diminishing to 5 to 10 knots.
Waves 1 to 2 feet building to 2 to 4 feet, then subsiding to 1 to
3 feet.
.MONDAY...Northwest winds 5 to 10 knots. Waves 2 feet or less.
.TUESDAY...North winds 5 to 10 knots. Waves 1 foot or less.

$$

LOZ061-292100-
MAFOR 2915/
ONTARIO WEST 1/2 13620 11720 11820 13810. A chance of showers
this afternoon and evening. Waves 1 to 3 feet building to 3 to 5
feet this afternoon. Waves 3 to 5 feet subsiding to 2 to 3 feet
tonight. Waves 1 to 3 feet Saturday morning.

ONTARIO EAST 1/2 13620 11720 14820. A chance of showers this
afternoon and evening. Waves 1 to 3 feet building to 3 to 6 feet
this afternoon. Waves 3 to 6 feet tonight and Saturday morning.

$$