FZUS61 KBUF 260202
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 PM EDT Sat Apr 25 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 build across the lower Great Lakes
through Monday. A 29.4 inch low over the Great Plains Monday night
will advance northeast into the upper Great Lakes later Monday night
into Tuesday morning, while pushing a warm front across the lake.
The low will head northeast to James Bay Tuesday night sending a
cold front across the lake. An inverted trough averaging 29.7 inch
inverted trough is expected across the lower Great Lakes Wednesday
through Wednesday night.

LOZ062-260900-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 PM EDT Sat Apr 25 2026

.REST OF TONIGHT...East winds 10 to 15 knots becoming northeast.
Waves 2 to 4 feet subsiding to 1 to 3 feet.
.SUNDAY...Northeast winds 5 to 10 knots becoming east. Waves
2 feet or less.
.SUNDAY NIGHT...East winds 10 knots or less. Waves 1 foot or
less.
.MONDAY...East winds 10 knots or less increasing to 10 to
15 knots. Waves 2 feet or less.
.MONDAY NIGHT...East winds 15 to 20 knots becoming southeast
10 to 15 knots. Waves 1 to 3 feet.
.TUESDAY...Southeast winds 15 to 20 knots becoming southwest and
diminishing to 5 to 10 knots. Showers. Waves 2 to 4 feet
subsiding to 1 to 3 feet.
.WEDNESDAY...West winds 5 to 15 knots. A chance of showers. Waves
2 feet or less building to 2 to 3 feet.
.THURSDAY...West winds 10 to 15 knots becoming northwest. Waves
1 to 3 feet.

$$

LOZ063>065-260900-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 PM EDT Sat Apr 25 2026

.REST OF TONIGHT...Southeast winds 5 to 10 knots becoming east. A
chance of rain showers late this evening. Waves 1 to 3 feet.
.SUNDAY...Northeast winds 10 knots or less becoming northwest.
Waves 1 foot or less.
.SUNDAY NIGHT...Northwest winds less than 10 knots. Waves 1 foot
or less.
.MONDAY...Southeast winds 10 knots or less becoming northeast.
Waves 1 foot or less.
.MONDAY NIGHT...East winds 5 to 15 knots becoming southeast 15 to
20 knots. Waves 1 to 3 feet.
.TUESDAY...Southeast winds 15 to 20 knots becoming south.
Showers. Waves 2 to 4 feet building to 3 to 5 feet, then
subsiding to 2 to 4 feet.
.WEDNESDAY...South winds 10 to 15 knots becoming west. Showers
likely. Waves 1 to 3 feet.
.THURSDAY...West winds 15 to 20 knots becoming northwest. Waves
2 to 4 feet.

$$

LOZ061-260900-
MAFOR 2603/
ONTARIO WEST 1/2 11210 11110 12100 11200 11100 11200 11800. Waves
2 to 4 feet subsiding to 1 to 3 feet overnight. Waves 2 feet or
less Sunday and Sunday evening.

ONTARIO EAST 1/2 12200 12100 11800 13700. Waves 2 feet or less.

$$