483
FZUS61 KBUF 162002
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 PM EDT Thu Oct 16 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 30.2 inch high will settle over the lower
Great Lakes through Friday, before sliding off the East Coast on
Saturday. Meanwhile, a strong 29.1 inch surface low will track
across northwestern Ontario into Hudson Bay Friday night and
Saturday while pushing its associated warm front across the Lake
Friday night. A developing 29.5 inch low over the Ohio Saturday will
strengthen to 29.3 inches as it moves northeast through the central
Great Lakes Saturday night and Sunday.

LOZ062-170300-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 PM EDT Thu Oct 16 2025

.TONIGHT...North winds 5 to 15 knots becoming northeast. Waves
1 to 2 feet.
.FRIDAY...Northeast winds 5 to 10 knots becoming light and
variable. A chance of showers late. Waves 1 foot or less.
.FRIDAY NIGHT...Southwest winds 10 knots or less becoming south.
A chance of showers. Waves 1 foot or less.
.SATURDAY...South winds 10 to 15 knots. A chance of showers.
Waves 2 feet or less.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots becoming south
15 to 20 knots. Showers likely. Waves 1 to 3 feet.
.SUNDAY...South winds 15 to 25 knots becoming west to 30 knots.
Showers with a chance of thunderstorms. Waves 2 to 4 feet
building to 6 to 9 feet. Waves occasionally around 11 feet.
.MONDAY...West winds to 30 knots becoming southwest and
diminishing to 10 to 15 knots. Showers likely during the day,
then a chance of showers Monday night. Waves 6 to 9 feet
subsiding to 2 to 4 feet. Waves occasionally around 11 feet.
.TUESDAY...Southwest winds 15 to 25 knots becoming west to
30 knots. Showers likely. Waves 2 to 3 feet building to 6 to
9 feet. Waves occasionally around 11 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-170300-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 PM EDT Thu Oct 16 2025

.TONIGHT...North winds 10 to 15 knots becoming northeast. Waves
1 to 3 feet.
.FRIDAY...North winds 10 knots or less becoming northwest. Waves
2 feet or less.
.FRIDAY NIGHT...West winds 10 knots or less becoming south. A
chance of showers. Waves 1 foot or less.
.SATURDAY...South winds 10 to 15 knots becoming southeast. A
chance of showers. Waves 2 feet or less.
.SATURDAY NIGHT...Southeast winds 15 to 25 knots becoming south.
A chance of showers in the evening, then showers likely
overnight. Waves 1 to 3 feet building to 3 to 5 feet.
.SUNDAY...South winds 15 to 25 knots becoming southwest to
30 knots. Showers with a chance of thunderstorms. Waves 3 to
6 feet building to 5 to 9 feet. Waves occasionally around
11 feet.
.MONDAY...West winds to 30 knots diminishing to 15 to 20 knots.
Showers during the day, then a chance of showers Monday night.
Waves 7 to 10 feet subsiding to 3 to 6 feet. Waves occasionally
around 13 feet.
.TUESDAY...Southwest winds 15 to 25 knots increasing to 30 knots.
Showers. Waves 3 to 5 feet building to 6 to 9 feet. Waves
occasionally around 11 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-170300-
MAFOR 1621/
ONTARIO WEST 1/2 11710 12810 12100 12800 11600. Waves 1 to 3 feet
tonight. Waves 2 feet or less Friday.

ONTARIO EAST 1/2 14810 13800 11700. Waves 1 to 3 feet tonight.
Waves 2 feet or less Friday.

$$