919
FZUS61 KBUF 050302
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 PM EST Thu Dec 4 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 30.4 inch high centered over the corn belt region will
build into the region tonight. 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 briefly build into the region Sunday. A 29.5 inch
low will approach the region from the south, before moving off the
Mid-Atlantic coast Sunday night. Another 30.4 inch high will quickly
pass across the region Monday night, then 29.9 inches will persist
across the Lake Tuesday.

LOZ062-051000-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 PM EST Thu Dec 4 2025

.OVERNIGHT...North winds 5 to 15 knots becoming south.
Waves 1 to 3 feet.
.FRIDAY...South winds 10 to 15 knots becoming southwest 15 to
20 knots. Waves 1 to 3 feet building to 2 to 4 feet.
.FRIDAY NIGHT...Southwest winds 15 to 25 knots. Waves 2 to 4 feet
building to 3 to 6 feet.
.SATURDAY...Southwest winds 15 to 25 knots becoming west. Snow
showers likely. Waves 3 to 6 feet building to 4 to 7 feet. Waves
occasionally around 9 feet.
.SATURDAY NIGHT...West winds 15 to 20 knots becoming north 10 to
15 knots. A chance of snow showers. Waves 3 to 6 feet subsiding
to 1 to 3 feet.
.SUNDAY...Northeast winds 10 to 15 knots becoming north. Snow
showers likely. Waves 1 to 3 feet.
.MONDAY...North winds 10 to 15 knots becoming southwest 15 to
20 knots. Waves 1 to 3 feet.
.TUESDAY...South winds 15 to 25 knots becoming southwest 15 to
20 knots. Snow showers. Waves 3 to 6 feet.

$$

LOZ063-051000-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
1002 PM EST Thu Dec 4 2025

.OVERNIGHT...Northwest winds 5 to 15 knots becoming south.
Waves 2 to 4 feet subsiding to 1 to 3 feet.
.FRIDAY...South winds 15 to 20 knots becoming southwest 10 to
15 knots. Waves 1 to 3 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots increasing to
15 to 20 knots. Waves 1 to 3 feet building to 2 to 4 feet.
.SATURDAY...Southwest winds 15 to 25 knots becoming west. A
chance of snow showers. Waves 2 to 4 feet building to 4 to
7 feet. Waves occasionally around 9 feet.
.SATURDAY NIGHT...West winds 15 to 20 knots becoming northwest
10 to 15 knots. A chance of snow showers. Waves 4 to 7 feet
subsiding to 2 to 4 feet. Waves occasionally around 9 feet.
.SUNDAY...Northeast winds 10 to 15 knots becoming north 15 to
20 knots. Snow showers likely. Waves 1 to 3 feet building to 2 to
4 feet.
.MONDAY...North winds 15 to 20 knots becoming southwest. A chance
of snow showers during the day. Waves 2 to 4 feet.
.TUESDAY...South winds 15 to 25 knots becoming southwest. Snow
showers likely. Waves 3 to 6 feet.

$$

LOZ064-065-051000-
Lake Ontario open waters from Sodus Bay to the Saint Lawrence
River-
1002 PM EST Thu Dec 4 2025

.OVERNIGHT...Northwest winds 5 to 15 knots becoming south.
Waves 3 to 5 feet subsiding to 1 to 3 feet.
.FRIDAY...South winds 15 to 25 knots. Waves 2 to 4 feet building
to 3 to 5 feet, then subsiding to 2 to 4 feet.
.FRIDAY NIGHT...South winds 15 to 20 knots. Waves 2 to 4 feet
building to 3 to 5 feet.
.SATURDAY...South winds 15 to 25 knots becoming southwest. Snow
showers. Waves 3 to 6 feet building to 4 to 7 feet. Waves
occasionally around 9 feet.
.SATURDAY NIGHT...West winds 15 to 25 knots becoming north and
diminishing to 10 to 15 knots. Snow showers. Waves 4 to 7 feet
subsiding to 3 to 6 feet. Waves occasionally around 9 feet.
.SUNDAY...Northeast winds 10 to 15 knots becoming north 15 to
20 knots. Snow showers likely. Waves 2 to 4 feet.
.MONDAY...North winds 15 to 20 knots becoming south. A chance of
snow showers during the day. Waves 2 to 4 feet.
.TUESDAY...South winds to 30 knots becoming southwest and
diminishing to 15 to 20 knots. Snow showers. Waves 3 to 6 feet
building to 5 to 8 feet. Waves occasionally around 10 feet.

$$

LOZ061-051000-
MAFOR 0504/
ONTARIO WEST 1/2 11800 11400 12410 11510 13520. Waves 1 to 3 feet
overnight. Waves 1 to 3 feet building to 2 to 4 feet Friday.
Waves 2 to 4 feet Friday evening.

ONTARIO EAST 1/2 11800 11300 11420 11430 14420. Waves 2 to 4 feet
subsiding to 1 to 3 feet overnight. Waves 2 to 4 feet Friday and
Friday evening.

$$