360
FZUS61 KBUF 120202
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 PM EDT Sat Oct 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 weakening 30.1 inch low will move to near Lake Erie
tonight. A 30.4 inch high will then build from Quebec tonight to the
Canadian Maritimes Sunday, where it will remain in place through
Tuesday. Meanwhile, a 29.5 inch low will drift from just offshore of
the Carolinas Sunday to the Mid-Alantic and then out to sea Tuesday.
A 29.8 inch low will move across James Bay Tuesday while sending a
cold front across the lake Tuesday night. A 30.3 inch area of high
pressure will then reach the Upper Great Lakes Wednesday.

LOZ062-120900-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 PM EDT Sat Oct 11 2025

.OVERNIGHT...East winds 10 to 15 knots. Waves 1 to 3 feet.
.SUNDAY...East winds 15 to 20 knots. Waves 2 to 4 feet building
to 3 to 5 feet.
.SUNDAY NIGHT...East winds 15 to 20 knots. A chance of showers
overnight. Waves 3 to 5 feet.
.MONDAY...East winds 15 to 20 knots diminishing to 10 to
15 knots. A chance of showers in the morning. Waves 3 to 5 feet.
.MONDAY NIGHT...East winds 5 to 10 knots becoming northeast.
Waves 1 to 3 feet.
.TUESDAY...North winds 5 to 10 knots increasing to 15 to
20 knots. Waves 1 foot or less building to 2 to 4 feet.
.WEDNESDAY...North winds 15 to 20 knots. Waves 2 to 4 feet.
.THURSDAY...North winds 10 to 15 knots. Waves 1 to 3 feet.

$$

LOZ063>065-120900-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 PM EDT Sat Oct 11 2025

.OVERNIGHT...East winds 10 to 15 knots. A chance of showers
late. Waves 1 to 3 feet.
.SUNDAY...East winds 10 to 15 knots becoming northeast 15 to
20 knots. Waves 1 to 3 feet building to 2 to 4 feet.
.SUNDAY NIGHT...East winds 15 to 20 knots. A chance of showers.
Waves 2 to 4 feet building to 3 to 5 feet.
.MONDAY...East winds 15 to 20 knots becoming northeast 10 to
15 knots. A chance of showers. Waves 3 to 5 feet subsiding to
2 to 4 feet.
.MONDAY NIGHT...Northeast winds 5 to 15 knots. A chance of
showers. Waves 1 to 3 feet.
.TUESDAY...North winds 5 to 10 knots increasing to 15 to
20 knots. A chance of showers Tuesday night. Waves 1 to 3 feet
building to 3 to 5 feet.
.WEDNESDAY...North winds 15 to 20 knots. A chance of showers
during the day. Waves 3 to 5 feet.
.THURSDAY...North winds 15 to 20 knots diminishing to 10 to
15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet.

$$

LOZ061-120900-
MAFOR 1203/
ONTARIO WEST 1/2 13210 14220 11220. Waves 1 to 3 feet overnight.
Waves 2 to 4 feet building to 3 to 5 feet Sunday. Waves 3 to 5
feet Sunday evening.

ONTARIO EAST 1/2 11210 11310 13210 12110 11220. A chance of
showers Sunday evening. Waves 1 to 3 feet overnight and Sunday.
Waves 1 to 3 feet building to 2 to 4 feet Sunday evening.

$$