924
FZUS61 KBUF 151402
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 AM EDT Wed Oct 15 2025

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 expansive 30.3 inch high will build from the upper
Great Lakes today into Quebec and the lower Great Lakes Thursday
through Friday. The large surface high will push off the East Coast
on Saturday as a large 29.2 inch surface low tracks across Ontario,
pushing its associated warm front across the Lake Saturday, followed
by an associated cold front crossing the Lake later Sunday into
Sunday night.

LOZ062-152100-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 AM EDT Wed Oct 15 2025

.THIS AFTERNOON...North winds 10 to 15 knots becoming northwest.
Waves 2 to 4 feet subsiding to 1 to 3 feet.
.TONIGHT...Northwest winds 10 to 15 knots becoming north. Waves
1 to 3 feet building to 2 to 4 feet.
.THURSDAY...North winds 5 to 15 knots becoming northwest. Waves
1 to 3 feet.
.THURSDAY NIGHT...North winds 5 to 15 knots becoming northeast.
Waves 1 to 3 feet.
.FRIDAY...Northeast winds 5 to 10 knots becoming south. A chance
of showers Friday night. Waves 2 feet or less.
.SATURDAY...South winds 5 to 15 knots. A chance of showers during
the day, then showers likely Saturday night. Waves 2 feet or
less.
.SUNDAY...South winds 10 to 15 knots becoming west and increasing
to 15 to 25 knots. Showers. Waves 1 to 3 feet building to 3 to
6 feet.

$$

LOZ063>065-152100-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 AM EDT Wed Oct 15 2025

.THIS AFTERNOON...North winds 15 to 20 knots diminishing to 10 to
15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet.
.TONIGHT...North winds 10 to 15 knots increasing to 15 to
20 knots. Waves 1 to 3 feet building to 3 to 5 feet.
.THURSDAY...North winds 15 to 20 knots becoming northwest 10 to
15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.THURSDAY NIGHT...North winds 15 to 20 knots becoming northeast
10 to 15 knots. Waves 1 to 3 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet.
.FRIDAY...Northeast winds 10 knots or less becoming south. A
chance of showers Friday night. Waves 1 to 3 feet subsiding to
1 foot or less.
.SATURDAY...South winds 5 to 10 knots increasing to 15 to
25 knots. A chance of showers. Waves 1 to 3 feet building to 3 to
5 feet.
.SUNDAY...South winds 15 to 25 knots becoming southwest to
30 knots. Showers. Waves 3 to 5 feet building to 5 to 8 feet.
Waves occasionally around 10 feet.

$$

LOZ061-152100-
MAFOR 1515/
ONTARIO WEST 1/2 11810 11800 11710 11810 12820 12810. Waves 2 to
4 feet subsiding to 1 to 2 feet this afternoon. Waves 1 to 3 feet
building to 2 to 4 feet tonight. Waves 2 to 4 feet Thursday
morning.

ONTARIO EAST 1/2 11820 13810 14820. Waves 3 to 5 feet subsiding
to 1 to 3 feet this afternoon. Waves 1 to 3 feet building to 3 to
5 feet tonight. Waves 2 to 4 feet Thursday morning.

$$