012
FZUS61 KBUF 111502
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 AM 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.

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

.REST OF TODAY...Northwest winds to 30 knots becoming west. Snow
late this morning, then a chance of snow showers early this
afternoon. A chance of rain showers late. Waves 5 to 9 feet.
Waves occasionally around 11 feet.
.TONIGHT...West winds 15 to 25 knots becoming southwest. A chance
of rain showers early, then lake effect rain showers late in the
evening. Lake effect rain and snow showers after midnight. Waves
5 to 8 feet. Waves occasionally around 10 feet.
.WEDNESDAY...Southwest winds 15 to 25 knots becoming west. Lake
effect rain showers. Waves 3 to 6 feet building to 5 to 8 feet.
Waves occasionally around 10 feet.
.WEDNESDAY NIGHT...West winds 20 to 25 knots. Showers. Waves 6 to
9 feet. Waves occasionally around 11 feet.
.THURSDAY...West winds to 30 knots diminishing to 15 to 20 knots.
Showers likely. Waves 6 to 9 feet subsiding to 3 to 5 feet. Waves
occasionally around 11 feet.
.FRIDAY...Northwest winds 10 to 15 knots becoming north. A chance
of rain showers during the day. Waves 1 to 3 feet.
.SATURDAY...Northeast winds 5 to 15 knots becoming southeast. A
chance of rain showers Saturday night. Waves 2 feet or less.

$$

LOZ063>065-112200-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 AM EST Tue Nov 11 2025

.REST OF TODAY...Northwest winds to 30 knots becoming west. Snow
late this morning, then a chance of snow and rain showers early
this afternoon. A chance of rain showers late. Waves 7 to
11 feet. Waves occasionally around 14 feet.
.TONIGHT...West winds to 30 knots becoming southwest. Rain
showers likely in the evening, then lake effect rain showers with
lake effect snow showers likely after midnight. Waves 7 to
11 feet subsiding to 6 to 9 feet. Waves occasionally around
14 feet.
.WEDNESDAY...Southwest winds 20 to 25 knots becoming west. Lake
effect rain showers with lake effect snow showers likely in the
morning, then lake effect rain showers in the afternoon. Waves
5 to 8 feet building to 6 to 9 feet. Waves occasionally around
11 feet.
.WEDNESDAY NIGHT...West winds to 30 knots. Lake effect showers.
Waves 6 to 10 feet. Waves occasionally around 13 feet.
.THURSDAY...West winds to 30 knots becoming northwest 15 to
25 knots. Rain showers. Waves 8 to 11 feet subsiding to 3 to
6 feet. Waves occasionally around 14 feet.
.FRIDAY...Northwest winds 15 to 20 knots becoming north 10 to
15 knots. Rain showers likely during the day. Waves 2 to 4 feet
subsiding to 1 to 3 feet.
.SATURDAY...North winds 5 to 15 knots becoming southeast. A
chance of rain showers Saturday night. Waves 2 feet or less.

$$

LOZ061-112200-
MAFOR 1116/
ONTARIO WEST 1/2 12640 11630 11636 12537 12536. Waves 6 to 10
feet, and occasionally around 13 feet this afternoon. Waves 5 to
9 feet subsiding to 4 to 7 feet, and occasionally around 11 feet
tonight. Waves 3 to 6 feet Wednesday morning.

ONTARIO EAST 1/2 11740 12640 11630 12536 11537 11536. Waves 7 to
11 feet, and occasionally around 14 feet this afternoon. Waves 7
to 11 feet subsiding to 6 to 9 feet, and occasionally around 14
feet tonight. Waves 5 to 8 feet, and occasionally around 10 feet
Wednesday morning.

$$