467
FZUS61 KBUF 112002
GLFLO

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

LOZ062-120300-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 PM EDT Sat Oct 11 2025

.TONIGHT...East winds 15 to 20 knots diminishing to 10 to
15 knots. A chance of waterspouts early. A chance of showers
early. A chance of showers late. Waves 1 to 3 feet.
.SUNDAY...East winds 15 to 20 knots. A chance of showers early.
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>065-120300-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 PM EDT Sat Oct 11 2025

.TONIGHT...East winds 10 to 15 knots. A chance of waterspouts
early. A chance of waterspouts after midnight. A chance of
showers early. A chance of showers after midnight. Waves 1 to
3 feet.
.SUNDAY...East winds 10 to 15 knots becoming northeast 15 to
20 knots. A chance of showers early. 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.

$$

LOZ061-120300-
MAFOR 1121/
ONTARIO WEST 1/2 11220 14210 13220. A chance of waterspouts early
this evening. A chance of showers this evening and Sunday
morning. Waves 1 to 3 feet tonight. Waves 2 to 4 feet building to
3 to 5 feet Sunday.

ONTARIO EAST 1/2 13210 11310 13210 11110. A chance of waterspouts
tonight. A chance of showers early this evening. A chance of
showers overnight. Waves 1 to 3 feet.

$$