631
FZUS61 KBUF 280803
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
403 AM EDT Tue Jul 28 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 29.5 inch low over the western central Great Lakes
this evening will strengthen to 29.3 inches while moving southeast
into the lower Great Lakes tonight and Tuesday. A cold front
associated with this low will swing across the lake late Tuesday and
Tuesday night. The low will then weaken to 29.6 inches while
drifting east into New England by Wednesday, before entering the
northern Atlantic Thursday and Friday. Meanwhile a 30.0 inch high
will slide across the Great Lakes Thursday and Friday.

LOZ062-281500-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
403 AM EDT Tue Jul 28 2026

.TODAY...South winds 5 to 10 knots becoming northwest. Showers
this morning, then a chance of showers and thunderstorms this
afternoon. Waves 1 to 3 feet building to 2 to 4 feet.
.TONIGHT...Northwest winds 15 to 20 knots becoming north. Showers
likely with a chance of thunderstorms in the evening, then
showers likely after midnight. Waves 2 to 4 feet building to 3 to
6 feet.
.WEDNESDAY...North winds 15 to 20 knots. Showers likely. Waves
3 to 6 feet.
.WEDNESDAY NIGHT...North winds 10 to 15 knots. Showers likely in
the evening, then a chance of showers overnight. Waves 2 to
4 feet.
.THURSDAY...North winds 5 to 15 knots. Waves 1 to 3 feet
subsiding to 1 foot or less.
.FRIDAY...Northwest winds less than 10 knots becoming southwest.
Waves 1 foot or less.
.SATURDAY...Southeast winds less than 10 knots. A chance of
showers Saturday night. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-281500-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
403 AM EDT Tue Jul 28 2026

.TODAY...South winds 5 to 15 knots becoming north. Showers with a
chance of thunderstorms. Waves 1 to 3 feet building to 2 to
4 feet, then subsiding to 1 to 3 feet.
.TONIGHT...North winds 10 to 15 knots increasing to 15 to
20 knots. Showers likely with a chance of thunderstorms early,
then showers likely from late evening on. Waves 2 to 4 feet
building to 4 to 7 feet. Waves occasionally around 9 feet.
.WEDNESDAY...North winds 15 to 20 knots. Showers in the morning,
then showers with a chance of thunderstorms in the afternoon.
Waves 4 to 7 feet subsiding to 3 to 6 feet. Waves occasionally
around 9 feet.
.WEDNESDAY NIGHT...North winds 15 to 20 knots. Showers likely
with a chance of thunderstorms in the evening, then showers
likely overnight. Waves 3 to 5 feet subsiding to 2 to 4 feet.
.THURSDAY...North winds 15 to 20 knots diminishing to 5 to
15 knots. Waves 2 to 4 feet subsiding to 2 feet or less.
.FRIDAY...North winds 10 knots or less becoming southwest. Waves
1 foot or less.
.SATURDAY...South winds less than 10 knots becoming southeast. A
chance of showers Saturday night. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-281500-
MAFOR 2809/
ONTARIO WEST 1/2 11406 11306 11100 11800 11710 11720 12820. A
chance of thunderstorms this afternoon and evening. Waves 1 to 3
feet building to 2 to 4 feet today. Waves 2 to 4 feet building to
3 to 6 feet tonight.

ONTARIO EAST 1/2 11416 11316 11216 11106 11800 11810 11816 11826.
A chance of thunderstorms today and this evening. Waves 1 to 3
feet building to 2 to 4 feet, then subsiding to 1 to 3 feet
today. Waves 2 to 4 feet building to 4 to 7 feet, and
occasionally around 9 feet tonight.

$$