891
FZUS61 KBUF 112102
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 PM EST Tue Nov 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 29.0 inch low will linger over eastern Quebec today,
deepening to 28.2 inches at it then slowly advances towards
NewFoundland Wednesday. Another 29.2 inch low will develop south of
Nova Scotia Thursday, then move north across the Canadian Maritimes
Friday, remaining in place through Saturday. Meanwhile, a 30.1 inch
high will then build from northwest Ontario province Friday to James
Bay and the lower Great Lakes by Saturday.

LOZ062-120400-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 PM EST Tue Nov 11 2025

.TONIGHT...West winds 20 to 25 knots becoming southwest. Rain
this evening, then rain and snow after midnight. Waves 5 to
8 feet. Waves occasionally around 10 feet.
.WEDNESDAY...Southwest winds to 30 knots becoming west. Rain in
the morning, then rain showers in the afternoon. Waves 5 to
8 feet building to 6 to 10 feet. Waves occasionally around
13 feet.
.WEDNESDAY NIGHT...West winds to 30 knots. Showers. Waves 6 to
9 feet. Waves occasionally around 11 feet.
.THURSDAY...West winds 20 to 25 knots. Showers likely. Waves 5 to
8 feet. Waves occasionally around 10 feet.
.THURSDAY NIGHT...West winds 15 to 20 knots. A chance of showers.
Waves 4 to 7 feet subsiding to 2 to 4 feet. Waves occasionally
around 9 feet.
.FRIDAY...Northwest winds 5 to 15 knots becoming north. A chance
of rain showers during the day. Waves 2 to 4 feet subsiding to
1 to 3 feet.
.SATURDAY...Northeast winds 5 to 15 knots becoming southeast.
Rain likely Saturday night. Waves 1 to 3 feet.
.SUNDAY...Southwest winds 15 to 25 knots becoming northwest. Rain
likely during the day, then showers likely Sunday night. Waves
3 to 5 feet building to 5 to 8 feet. Waves occasionally around
10 feet.

$$

LOZ063>065-120400-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 PM EST Tue Nov 11 2025

.TONIGHT...West winds to 30 knots becoming southwest. A chance of
rain showers early, then rain late this evening. Rain and snow
after midnight. Waves 7 to 11 feet. Waves occasionally around
14 feet.
.WEDNESDAY...Southwest winds to 30 knots becoming west. Rain and
snow early, then rain late in the morning. Rain showers in the
afternoon. Waves 6 to 10 feet. Waves occasionally around 13 feet.
.WEDNESDAY NIGHT...West winds to 30 knots. Rain showers. Waves
6 to 10 feet. Waves occasionally around 13 feet.
.THURSDAY...West winds 15 to 25 knots increasing to 30 knots.
Rain showers. Waves 6 to 10 feet. Waves occasionally around
13 feet.
.THURSDAY NIGHT...Northwest winds 15 to 25 knots. Rain showers.
Waves 5 to 9 feet subsiding to 3 to 6 feet. Waves occasionally
around 11 feet.
.FRIDAY...Northwest winds 15 to 20 knots becoming north 10 to
15 knots. Rain showers likely during the day, then a chance of
rain and snow showers Friday night. Waves 3 to 5 feet subsiding
to 1 to 3 feet.
.SATURDAY...North winds 5 to 15 knots becoming southeast 15 to
20 knots. Rain likely Saturday night. Waves 1 to 3 feet.
.SUNDAY...South winds 15 to 25 knots becoming northwest to
30 knots. Rain likely during the day, then rain showers likely
Sunday night. Waves 3 to 5 feet building to 6 to 10 feet. Waves
occasionally around 13 feet.

$$

LOZ061-120400-
MAFOR 1122/
ONTARIO WEST 1/2 11630 11636 12537 12536 11636 11646. Waves 5 to
9 feet, and occasionally around 11 feet tonight. Waves 5 to 8
feet building to 6 to 10 feet, and occasionally around 13 feet
Wednesday.

ONTARIO EAST 1/2 11640 11636 11537 12547 12536 11636. Waves 7 to
11 feet, and occasionally around 14 feet tonight. Waves 6 to 10
feet, and occasionally around 13 feet Wednesday.

$$