090
FZUS61 KBUF 111502
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 AM EST Thu Dec 11 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 28.9 inch low will remain over the Canadian Maritimes
through Friday before moving into the North Atlantic by Saturday. A
30.1 inch high will build from the upper Ohio Valley Friday to off
the Mid Atlantic coast Saturday. A 29.6 inch low will then move from
just east of Lake Superior Saturday to southern Quebec by Sunday
where it will weaken to a 29.9 inch trough. A strong 30.8 inch high
will then build from the mid Mississippi Valley Sunday to the
southeast states Monday while weakening to 30.5 inches.

LOZ062-112200-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 AM EST Thu Dec 11 2025

.THIS AFTERNOON...Northwest winds 20 to 25 knots. A chance of snow
showers. Waves 4 to 7 feet. Waves occasionally around 9 feet.
.TONIGHT...Northwest winds 15 to 25 knots. A chance of snow
showers after midnight. Waves 4 to 7 feet subsiding to 3 to
6 feet. Waves occasionally around 9 feet.
.FRIDAY...West winds 15 to 25 knots. A chance of snow showers in
the afternoon. Waves 3 to 6 feet.
.FRIDAY NIGHT...West winds 15 to 20 knots becoming southwest
10 to 15 knots. A chance of snow showers overnight. Waves 2 to
4 feet subsiding to 1 to 3 feet.
.SATURDAY...Southwest winds 15 to 25 knots becoming west to
30 knots. Snow showers. Waves 3 to 6 feet building to 5 to
9 feet. Waves occasionally around 11 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 3 to 6 feet subsiding to 2 to 4 feet.
.MONDAY...West winds 15 to 20 knots increasing to 30 knots. A
chance of snow showers. Waves 2 to 4 feet building to 5 to
8 feet. Waves occasionally around 10 feet.

$$

LOZ063-112200-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
1002 AM EST Thu Dec 11 2025

...GALE WARNING IN EFFECT UNTIL 10 PM EST THIS EVENING...

.THIS AFTERNOON...Northwest winds to 30 knots. Lake effect snow
showers likely, then a chance of snow showers late. Waves 7 to
10 feet. Waves occasionally around 13 feet.
.TONIGHT...Northwest winds to 30 knots. A chance of snow showers.
Waves 6 to 10 feet subsiding to 5 to 8 feet. Waves occasionally
around 13 feet.
.FRIDAY...Northwest winds 15 to 25 knots becoming west. A chance
of snow showers. Waves 5 to 8 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 6 feet
subsiding to 2 to 4 feet.
.SATURDAY...Southwest winds 15 to 25 knots becoming west to
30 knots. Snow showers. Waves 3 to 6 feet building to 7 to
10 feet, then subsiding to 5 to 8 feet. Waves occasionally around
13 feet.
.SUNDAY...West winds 15 to 25 knots becoming northwest. Snow
showers during the day, then a chance of snow showers Sunday
night. Waves 4 to 7 feet subsiding to 3 to 6 feet. Waves
occasionally around 9 feet.
.MONDAY...Northwest winds 15 to 25 knots becoming west. A chance
of snow showers. Waves 2 to 4 feet building to 6 to 9 feet. Waves
occasionally around 11 feet.

$$

LOZ064-065-112200-
Lake Ontario open waters from Sodus Bay to the Saint Lawrence
River-
1002 AM EST Thu Dec 11 2025

...GALE WARNING IN EFFECT UNTIL 10 PM EST THIS EVENING...

.THIS AFTERNOON...Northwest winds to 30 knots becoming west. A
chance of snow showers. Waves 7 to 11 feet. Waves occasionally
around 14 feet.
.TONIGHT...Northwest winds to 30 knots. Waves 7 to 11 feet
subsiding to 5 to 9 feet. Waves occasionally around 14 feet.
.FRIDAY...Northwest winds 15 to 25 knots becoming west. A chance
of snow showers. Waves 5 to 8 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 6 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 8 to 11 feet, then
subsiding to 6 to 9 feet. Waves occasionally around 14 feet.
.SUNDAY...West winds 15 to 25 knots becoming northwest. Snow
showers during the day, then a chance of snow showers Sunday
night. Waves 4 to 7 feet subsiding to 3 to 6 feet. Waves
occasionally around 9 feet.
.MONDAY...Northwest winds 15 to 25 knots becoming west. A chance
of snow showers during the day, then snow showers likely Monday
night. Waves 2 to 4 feet building to 6 to 9 feet. Waves
occasionally around 11 feet.

$$

LOZ061-112200-
MAFOR 1116/
ONTARIO WEST 1/2...GALE WARNING IN EFFECT...14730 11730 11720
12630. A chance of snow showers this afternoon. 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 6 feet building to 4 to 7 feet, and
occasionally around 9 feet Friday morning.

ONTARIO EAST 1/2...GALE WARNING IN EFFECT...11740 11640 12740
13730 11630. A chance of snow showers Friday morning. Waves 7 to
11 feet, and occasionally around 14 feet this afternoon. Waves 7
to 11 feet subsiding to 5 to 9 feet, and occasionally around 14
feet tonight. Waves 5 to 8 feet, and occasionally around 10 feet
Friday morning.

$$