047
FZUS61 KBUF 032102
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 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.

LOZ062-040400-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 PM EST Wed Dec 3 2025

.TONIGHT...Southwest winds to 30 knots becoming northwest. Lake
effect snow showers likely this evening, then a chance of snow
showers after midnight. Waves 5 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.

$$

LOZ063-040400-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
402 PM EST Wed Dec 3 2025

.TONIGHT...Southwest winds 20 to 25 knots becoming northwest.
Snow showers likely early, then lake effect snow. Lake effect
snow showers likely late. Waves 5 to 8 feet building to 6 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.

$$

LOZ064-065-040400-
Lake Ontario open waters from Sodus Bay to the Saint Lawrence
River-
402 PM EST Wed Dec 3 2025

.TONIGHT...Southwest winds to 30 knots becoming northwest. A
chance of snow and rain showers early, then lake effect snow and
lake effect rain. Lake effect snow showers late. Waves 5 to
9 feet building to 7 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.

$$

LOZ061-040400-
MAFOR 0322/
ONTARIO WEST 1/2 11530 13630 11730 12740 11730. A chance of lake
effect snow showers tonight. A chance of snow showers Thursday.
Waves 5 to 9 feet, and occasionally around 11 feet tonight. Waves
6 to 10 feet, and occasionally around 13 feet Thursday.

ONTARIO EAST 1/2 12530 12637 11730 13740. Waves 3 to 6 feet
building to 7 to 10 feet, and occasionally around 13 feet
tonight. Waves 6 to 9 feet building to 8 to 12 feet, then
subsiding to 7 to 10 feet, and occasionally around 15 feet
Thursday.

$$