780
FZUS61 KBUF 171502
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 AM EST Mon Nov 17 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...A 28.8 low will make its way across the Canadian
Maritimes today, before withdrawing northward across Labrador on
Tuesday. A 30.3 inch high will then build from the upper Great Lakes
Tuesday to the lower Great Lakes Wednesday, then to New England
Thursday. A 29.6 inch low over central Ontario will then make its
way to Quebec Friday, while pushing its trailing cold front across
the lake.

LOZ062-172200-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 AM EST Mon Nov 17 2025

.THIS AFTERNOON...Northwest winds 20 to 25 knots. A chance of snow
showers. Waves 5 to 8 feet. Waves occasionally around 10 feet.
.TONIGHT...Northwest winds 15 to 25 knots. Waves 4 to 7 feet
subsiding to 3 to 6 feet. Waves occasionally around 9 feet.
.TUESDAY...Northwest winds 15 to 20 knots becoming west 5 to
15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.TUESDAY NIGHT...Northwest winds 5 to 10 knots becoming north.
Waves 1 foot or less.
.WEDNESDAY...North winds less than 10 knots becoming southeast.
Waves 1 foot or less.
.THURSDAY...East winds 10 knots or less becoming south. Rain
showers likely Thursday night. Waves 1 foot or less.
.FRIDAY...Southwest winds 15 to 20 knots becoming northwest 10 to
15 knots. Showers likely during the day, then a chance of showers
Friday night. Waves 1 to 3 feet building to 2 to 4 feet.

$$

LOZ063-172200-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
1002 AM EST Mon Nov 17 2025

.THIS AFTERNOON...Northwest winds to 30 knots. A chance of snow
showers, then lake effect snow showers likely late. Waves 7 to
10 feet. Waves occasionally around 13 feet.
.TONIGHT...Northwest winds 15 to 25 knots. A chance of snow and
rain showers in the evening, then a chance of snow showers after
midnight. Waves 5 to 9 feet subsiding to 4 to 7 feet. Waves
occasionally around 11 feet.
.TUESDAY...Northwest winds 15 to 20 knots becoming west 10 to
15 knots. Waves 3 to 6 feet subsiding to 1 to 3 feet.
.TUESDAY NIGHT...West winds 5 to 10 knots becoming north. Waves
1 to 2 feet.
.WEDNESDAY...North winds 10 knots or less becoming southeast.
Waves 1 foot or less.
.THURSDAY...Southeast winds 10 knots or less becoming south and
increasing to 15 to 20 knots. Rain showers likely Thursday night.
Waves 1 to 3 feet.
.FRIDAY...Southwest winds 15 to 20 knots becoming northwest.
Showers. Waves 2 to 4 feet building to 3 to 5 feet.

$$

LOZ064-065-172200-
Lake Ontario open waters from Sodus Bay to the Saint Lawrence
River-
1002 AM EST Mon Nov 17 2025

.THIS AFTERNOON...Northwest winds to 30 knots. A chance of snow
showers late. Waves 7 to 10 feet. Waves occasionally around
13 feet.
.TONIGHT...Northwest winds 15 to 25 knots. Waves 6 to 10 feet
subsiding to 5 to 8 feet. Waves occasionally around 13 feet.
.TUESDAY...Northwest winds 15 to 20 knots becoming west 10 to
15 knots. Waves 3 to 6 feet subsiding to 1 to 3 feet.
.TUESDAY NIGHT...West winds 5 to 10 knots becoming northwest.
Waves 1 to 3 feet subsiding to 1 foot or less.
.WEDNESDAY...Northwest winds 10 knots or less becoming southeast.
Waves 1 foot or less.
.THURSDAY...Southeast winds 5 to 15 knots becoming south 15 to
20 knots. Rain showers likely Thursday night. Waves 1 to 3 feet.
.FRIDAY...South winds 15 to 25 knots becoming northwest. Rain
showers. Waves 3 to 6 feet.

$$

LOZ061-172200-
MAFOR 1716/
ONTARIO WEST 1/2 14730 13720 11710. A chance of snow showers this
afternoon and evening. Waves 5 to 8 feet, and occasionally around
10 feet this afternoon. Waves 5 to 8 feet subsiding to 3 to 6
feet, and occasionally around 10 feet tonight. Waves 3 to 5 feet
subsiding to 2 to 4 feet Tuesday morning.

ONTARIO EAST 1/2 11740 14730 11730 12720. A chance of snow
showers this afternoon. A chance of rain and snow showers this
evening. Waves 7 to 10 feet, and occasionally around 13 feet this
afternoon. Waves 6 to 10 feet subsiding to 5 to 8 feet, and
occasionally around 13 feet tonight. Waves 3 to 6 feet Tuesday
morning.

$$