298
FZUS61 KBUF 280202
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 PM EDT Mon Apr 27 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 ridge along the Eastern Seaboard
overnight. A 29.4 inch low over the Great Plains will advance
northeast into the upper Great Lakes late tonight 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. The trough/low will track to the coast of New
England through Friday while also deepening to 29.5 inches.

LOZ062-280900-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 PM EDT Mon Apr 27 2026

.OVERNIGHT...Southeast winds 15 to 20 knots diminishing to
10 to 15 knots. Waves 2 to 4 feet.
.TUESDAY...Southeast winds 15 to 20 knots becoming south. Showers
through early afternoon. Waves 2 to 4 feet subsiding to 1 to
3 feet.
.TUESDAY NIGHT...South winds 15 to 20 knots becoming northwest
5 to 15 knots. Waves 1 to 3 feet.
.WEDNESDAY...North winds 10 knots or less. A chance of showers in
the morning, then showers in the afternoon. Waves 1 foot or less.
.WEDNESDAY NIGHT...North winds 10 to 15 knots becoming northwest.
Showers. Waves 1 to 3 feet building to 2 to 4 feet.
.THURSDAY...West winds 15 to 20 knots becoming northwest 10 to
15 knots. A chance of rain showers during the day. Waves 2 to
4 feet.
.FRIDAY...West winds 15 to 20 knots becoming northwest 10 to
15 knots. Waves 1 to 3 feet.
.SATURDAY...West winds 10 to 15 knots. Waves 2 to 3 feet.

$$

LOZ063>065-280900-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 PM EDT Mon Apr 27 2026

.OVERNIGHT...Southeast winds 10 to 15 knots increasing to
15 to 20 knots. Waves 1 to 3 feet building to 2 to 4 feet.
.TUESDAY...Southeast winds 15 to 20 knots. Showers likely from
late morning on. Waves 3 to 5 feet subsiding to 2 to 4 feet.
.TUESDAY NIGHT...South winds 15 to 25 knots becoming west and
diminishing to 10 to 15 knots. Waves 3 to 5 feet subsiding to
1 to 3 feet.
.WEDNESDAY...West winds 5 to 10 knots becoming northeast. A
chance of showers in the morning, then showers in the afternoon.
Waves 2 feet or less.
.WEDNESDAY NIGHT...Northeast winds 5 to 15 knots becoming west
15 to 20 knots. Showers. Waves 1 to 3 feet building to 2 to
4 feet.
.THURSDAY...West winds 15 to 25 knots becoming northwest. Rain
showers likely during the day. Waves 3 to 6 feet.
.FRIDAY...West winds 15 to 25 knots. Waves 3 to 6 feet subsiding
to 2 to 4 feet.
.SATURDAY...West winds 15 to 20 knots diminishing to 10 to
15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet.

$$

LOZ061-280900-
MAFOR 2803/
ONTARIO WEST 1/2 11310 12320 12326 11320 11420 11510. Waves 2 to
4 feet overnight. Waves 3 to 5 feet subsiding to 2 to 4 feet
Tuesday. Waves 2 to 4 feet Tuesday evening.

ONTARIO EAST 1/2 11310 13320 11426 11420 12430. Waves 1 to 3 feet
building to 2 to 4 feet overnight. Waves 3 to 5 feet subsiding to
2 to 4 feet Tuesday. Waves 3 to 5 feet Tuesday evening.

$$