455
FZUS61 KBUF 102102
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 PM EST Wed Dec 10 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 29.2 inch low will cross along the northern shoreline
of the Lake this afternoon before moving northeast of the Lake this
evening, while dragging a cold front across the Lake waters. The
region will then be situated between a 29.1 inch low over the
Canadian Maritimes and a 30.1 inch high over the Southern Plains
Thursday. A 29.9 inch ridge of high pressure is expected to move
into the Great Lakes region Friday. A 29.8 inch low may move north
of the Lake on Saturday, then 30.2 inches will average across the
Lower Great Lakes region between the departing low to the east and a
30.7 inch high over the Plains Sunday.

LOZ062-110400-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 PM EST Wed Dec 10 2025

.TONIGHT...Northwest winds to 30 knots. Rain likely with a chance
of snow this evening, then snow showers likely after midnight.
Waves 5 to 8 feet building to 7 to 11 feet. Waves occasionally
around 14 feet.
.THURSDAY...Northwest winds to 30 knots becoming west. A chance
of snow showers. Waves 8 to 12 feet. Waves occasionally around
15 feet.
.THURSDAY NIGHT...Northwest winds to 30 knots becoming west and
diminishing to 15 to 20 knots. Waves 7 to 11 feet subsiding to
5 to 8 feet. Waves occasionally around 14 feet.
.FRIDAY...West winds 15 to 20 knots diminishing to 10 to
15 knots. A chance of snow showers in the afternoon. Waves 3 to
6 feet subsiding to 2 to 4 feet.
.FRIDAY NIGHT...West winds 10 to 15 knots becoming southwest. A
chance of snow showers overnight. Waves 1 to 3 feet.
.SATURDAY...Southwest winds 15 to 25 knots becoming west to
30 knots. Snow showers likely. Waves 3 to 6 feet building to 5 to
9 feet. Waves occasionally around 11 feet.
.SUNDAY...West winds 15 to 20 knots becoming northwest 10 to
15 knots. Snow showers likely during the day, then a chance of
snow showers Sunday night. Waves 4 to 7 feet subsiding to 2 to
4 feet. Waves occasionally around 9 feet.
.MONDAY...West winds 10 to 15 knots increasing to 15 to 25 knots.
A chance of snow showers. Waves 1 to 3 feet building to 3 to
6 feet.

$$

LOZ063-110400-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
402 PM EST Wed Dec 10 2025

...GALE WARNING IN EFFECT FROM 1 AM EST THURSDAY THROUGH THURSDAY
EVENING...

.TONIGHT...West winds to 30 knots becoming northwest and
increasing to 35 knot gales. Rain early, then snow and rain
likely late this evening. Lake effect snow showers likely after
midnight. Waves 4 to 7 feet building to 10 to 14 feet. Waves
occasionally around 18 feet.
.THURSDAY...Northwest gales to 35 knots becoming west. Lake
effect snow showers likely through early afternoon, then a chance
of snow showers late. Waves 11 to 15 feet. Waves occasionally
around 19 feet.
.THURSDAY NIGHT...Northwest gales to 35 knots diminishing to
30 knots. A chance of snow showers. Waves 10 to 15 feet subsiding
to 6 to 9 feet. Waves occasionally around 19 feet.
.FRIDAY...West winds 15 to 25 knots. A chance of snow showers.
Waves 5 to 8 feet subsiding to 3 to 5 feet. Waves occasionally
around 10 feet.
.FRIDAY NIGHT...West winds 15 to 20 knots becoming southwest
10 to 15 knots. A chance of snow showers. Waves 3 to 5 feet
subsiding to 1 to 3 feet.
.SATURDAY...Southwest winds 15 to 25 knots becoming west to
30 knots. Snow showers likely. Waves 3 to 5 feet building to 6 to
10 feet. Waves occasionally around 13 feet.
.SUNDAY...West winds 15 to 25 knots becoming northwest. Snow
showers likely during the day, then a chance of snow showers
Sunday night. Waves 5 to 8 feet subsiding to 3 to 5 feet. Waves
occasionally around 10 feet.
.MONDAY...Northwest winds 10 to 15 knots becoming west 15 to
20 knots. A chance of snow showers. Waves 2 to 4 feet building to
4 to 7 feet. Waves occasionally around 9 feet.

$$

LOZ064-065-110400-
Lake Ontario open waters from Sodus Bay to the Saint Lawrence
River-
402 PM EST Wed Dec 10 2025

...GALE WARNING IN EFFECT FROM 1 AM EST THURSDAY THROUGH THURSDAY
EVENING...

.TONIGHT...West winds to 30 knots becoming northwest and
increasing to 35 knot gales after midnight. Rain early, then snow
and rain likely late this evening. Snow showers likely after
midnight. Waves 5 to 9 feet building to 10 to 14 feet. Waves
occasionally around 18 feet.
.THURSDAY...Northwest gales to 35 knots becoming west. Snow
showers likely in the morning, then a chance of snow showers in
the afternoon. Waves 11 to 16 feet. Waves occasionally around
20 feet.
.THURSDAY NIGHT...Northwest gales to 35 knots diminishing to
30 knots. A chance of snow showers. Waves 12 to 16 feet subsiding
to 7 to 11 feet. Waves occasionally around 20 feet.
.FRIDAY...Northwest winds 15 to 25 knots becoming west. A chance
of snow showers. Waves 5 to 8 feet subsiding to 3 to 6 feet.
Waves occasionally around 10 feet.
.FRIDAY NIGHT...West winds 15 to 20 knots becoming southwest
10 to 15 knots. Lake effect snow showers likely. Waves 3 to
5 feet subsiding to 1 to 3 feet.
.SATURDAY...South winds 15 to 25 knots becoming west. Snow
showers. Waves 3 to 5 feet building to 6 to 10 feet. Waves
occasionally around 13 feet.
.SUNDAY...West winds 15 to 25 knots becoming northwest. Snow
showers. Waves 5 to 8 feet subsiding to 3 to 6 feet. Waves
occasionally around 10 feet.
.MONDAY...Northwest winds 10 to 15 knots becoming west 15 to
20 knots. A chance of snow showers during the day, then snow
showers likely Monday night. Waves 2 to 4 feet building to 4 to
7 feet. Waves occasionally around 9 feet.

$$

LOZ061-110400-
MAFOR 1022/
ONTARIO WEST 1/2...GALE WARNING IN EFFECT...11736 15740 11640. A
chance of snow this evening. A chance of snow showers overnight.
A chance of snow showers Thursday. Waves 5 to 8 feet building to
8 to 12 feet, and occasionally around 15 feet tonight. Waves 9 to
13 feet, and occasionally around 16 feet Thursday.

ONTARIO EAST 1/2...GALE WARNING IN EFFECT...11536 11736 11740
12750 13650. A chance of snow this evening. A chance of lake
effect snow showers overnight. A chance of lake effect snow
showers Thursday. Waves 5 to 8 feet building to 10 to 14 feet,
and occasionally around 18 feet tonight. Waves 11 to 16 feet, and
occasionally around 20 feet Thursday.

$$