206
FZUS61 KBUF 040302
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 PM EST Wed Dec 3 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 30.2 inch surface high will build across the Ohio
Valley and Lower Great Lakes through Thursday morning before pushing
off the coast. A large 29.2 inch surface low near Hudson Bay will
push its cold front across the lake tonight, with another 30.4 inch
high building in its wake Thursday night. The high will then quickly
move east of the lake Friday. Another cold front will cross the Lake
late Saturday and Saturday night, this from a 29.3 inch low near
northern James Bay. Then, another area of surface high pressure
averaging 30.3 inches will build eastward across the Great Lakes
through Sunday, moving overhead Monday.

LOZ062-041000-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 PM EST Wed Dec 3 2025

.REST OF TONIGHT...West winds 20 to 25 knots becoming northwest.
Lake effect snow showers likely late this evening, then a chance
of snow showers after midnight. Waves 6 to 9 feet. Waves
occasionally around 11 feet.
.THURSDAY...West winds to 30 knots becoming northwest 15 to
25 knots. A chance of snow showers. Waves 5 to 9 feet. Waves
occasionally around 11 feet.
.THURSDAY NIGHT...Northwest winds 15 to 20 knots becoming south
10 to 15 knots. Waves 3 to 5 feet subsiding to 1 to 2 feet.
.FRIDAY...South winds 15 to 20 knots becoming southwest. Waves
1 to 3 feet building to 2 to 4 feet.
.FRIDAY NIGHT...Southwest winds 15 to 20 knots diminishing to
10 to 15 knots. A chance of snow showers overnight. Waves 2 to
4 feet.
.SATURDAY...Southwest winds 15 to 20 knots becoming west 10 to
15 knots. A chance of snow showers. Waves 2 to 4 feet building to
3 to 5 feet, then subsiding to 2 to 4 feet.
.SUNDAY...Northwest winds 10 to 15 knots becoming north. A chance
of snow showers. Waves 2 to 3 feet.
.MONDAY...North winds 10 to 15 knots becoming southwest. A chance
of snow showers Monday night. Waves 1 to 3 feet.

$$

LOZ063-041000-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
1002 PM EST Wed Dec 3 2025

.REST OF TONIGHT...Southwest winds 20 to 25 knots becoming
northwest. Lake effect snow, then lake effect snow showers likely
late. Waves 5 to 9 feet. Waves occasionally around 11 feet.
.THURSDAY...Northwest winds to 30 knots. Lake effect snow showers
likely through early afternoon, then a chance of snow showers
late. Waves 6 to 9 feet building to 8 to 12 feet, then subsiding
to 7 to 10 feet. Waves occasionally around 15 feet.
.THURSDAY NIGHT...Northwest winds 15 to 25 knots becoming south
and diminishing to 5 to 15 knots. Waves 5 to 8 feet subsiding to
1 to 3 feet. Waves occasionally around 10 feet.
.FRIDAY...South winds 15 to 20 knots becoming southwest. Waves
1 to 3 feet building to 2 to 4 feet, then subsiding to 1 to
3 feet.
.FRIDAY NIGHT...Southwest winds 15 to 20 knots diminishing to
10 to 15 knots. Waves 1 to 3 feet.
.SATURDAY...Southwest winds 15 to 20 knots becoming west. A
chance of snow showers. Waves 2 to 4 feet building to 3 to
6 feet.
.SUNDAY...Northwest winds 10 to 15 knots becoming north 15 to
20 knots. A chance of snow showers. Waves 2 to 4 feet.
.MONDAY...North winds 10 to 15 knots becoming southwest 15 to
20 knots. A chance of snow showers. Waves 1 to 3 feet.

$$

LOZ064-065-041000-
Lake Ontario open waters from Sodus Bay to the Saint Lawrence
River-
1002 PM EST Wed Dec 3 2025

.REST OF TONIGHT...Southwest winds to 30 knots becoming
northwest. Lake effect snow and lake effect rain, then lake
effect snow showers late. Waves 6 to 10 feet. Waves occasionally
around 13 feet.
.THURSDAY...Northwest winds to 30 knots. Lake effect snow showers
likely in the morning, then a chance of snow showers early in the
afternoon. Waves 6 to 9 feet building to 7 to 11 feet. Waves
occasionally around 14 feet.
.THURSDAY NIGHT...Northwest winds to 30 knots becoming southeast
and diminishing to 5 to 15 knots overnight. A chance of snow
showers overnight. Waves 6 to 9 feet subsiding to 2 feet or less.
Waves occasionally around 11 feet.
.FRIDAY...South winds 15 to 25 knots. A chance of snow showers in
the morning. Waves 1 to 3 feet building to 3 to 5 feet.
.FRIDAY NIGHT...South winds 15 to 20 knots. Waves 3 to 5 feet
subsiding to 2 to 4 feet.
.SATURDAY...South winds 15 to 20 knots becoming west. Snow
showers likely. Waves 2 to 4 feet building to 3 to 6 feet.
.SUNDAY...Northwest winds 10 to 15 knots becoming north 15 to
20 knots. Snow showers likely during the day, then a chance of
snow showers Sunday night. Waves 2 to 4 feet subsiding to 1 to
3 feet.
.MONDAY...North winds 10 to 15 knots becoming south 15 to
20 knots. A chance of snow showers. Waves 1 to 3 feet building to
2 to 4 feet.

$$

LOZ061-041000-
MAFOR 0404/
ONTARIO WEST 1/2 12630 11730 12740 11730 11720 11710. A chance of
snow showers overnight and Thursday. Waves 5 to 9 feet, and
occasionally around 11 feet overnight. Waves 6 to 10 feet, and
occasionally around 13 feet Thursday. Waves 3 to 6 feet subsiding
to 2 to 4 feet Thursday evening.

ONTARIO EAST 1/2 12637 11730 14740 11720. Waves 6 to 10 feet, and
occasionally around 13 feet overnight. Waves 6 to 9 feet building
to 8 to 12 feet, then subsiding to 7 to 10 feet, and occasionally
around 15 feet Thursday. Waves 6 to 9 feet subsiding to 3 to 6
feet, and occasionally around 11 feet Thursday evening.

$$