Experimental Modernized Open Lake Forecast - Lake Ontario

NZUS99 KBUF 211452
GLFLOT

Experimental Tabular Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
952 AM EST Wed Jan 21 2026

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 29.8 inch low will move from the upper Great Lakes
today to central Quebec through Thursday, then to the Canadian
Maritimes Friday. This low will push an arctic cold front across the
lake Thursday morning, followed by a reinforcing secondary front
late Thursday night into Friday morning. At the same time, a large
31.1 inch high will build from northwestern Canada to the northern
Plains states, with the high then weakening to 30.7 inches as it
slides eastward across the Great Lakes and New England over the
weekend.

LOZ062-212100-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
952 AM EST Wed Jan 21 2026

...GALE WATCH IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY
EVENING...

.This Afternoon...
Weather.............Mostly cloudy with chance of snow showers, then
                              cloudy with snow showers likely in the
                              afternoon.
Sfc winds...........South to 30 knots increasing to 35 knot gales
                              in the afternoon.
100-ft winds........South gales to 35 knots increasing to 45 knots
                              in the afternoon.
Sig waves...........6 to 9 feet building to 10 to 14 feet in the
                              afternoon.
Ocnl waves..........Around 10 feet building to around 16 feet in
                              the afternoon.

.TONIGHT...
Weather.............Mostly cloudy with chance of snow showers.
Sfc winds...........Southwest gales to 35 knots.
100-ft winds........Southwest gales to 45 knots.
Sig waves...........10 to 14 feet.
Ocnl waves..........Around 17 feet.

.THURSDAY...
Weather.............Partly sunny with chance of snow showers, then
                              partly sunny in the afternoon.
Sfc winds...........Southwest gales to 45 knots.
100-ft winds........Southwest storm force winds to 55 knots.
Sig waves...........12 to 16 feet.
Ocnl waves..........Around 20 feet.

.THURSDAY NIGHT...
Weather.............Mostly cloudy with chance of snow showers.
Sfc winds...........West gales to 40 knots.
100-ft winds........West storm force winds to 50 knots.
Sig waves...........12 to 16 feet.
Ocnl waves..........Around 21 feet.


.FORECAST DAYS 3 THROUGH 5......
.FRIDAY...Windy. Chance of snow showers in the morning, then snow
showers likely in the afternoon. West gales to 35 knots. Waves
8 to 12 feet.
.SATURDAY...Chance of snow showers in the afternoon and evening.
Northwest winds 10 to 15 knots. Waves 3 to 5 feet.
.SUNDAY...Chance of snow showers. Northeast winds 15 to 20 knots.
Waves 3 to 5 feet.

$$

LOZ063>065-212100-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
Lake Ontario open waters from Sodus Bay to Mexico Bay-
Lake Ontario open waters from Mexico Bay to the Saint Lawrence
River-
952 AM EST Wed Jan 21 2026

...GALE WATCH IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY
EVENING...

.This Afternoon...
Weather.............Mostly cloudy with chance of snow showers.
Sfc winds...........South to 30 knots.
100-ft winds........South gales to 35 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 14 feet.

.TONIGHT...
Weather.............Mostly cloudy with chance of snow showers.
Sfc winds...........South gales to 35 knots.
100-ft winds........South gales to 45 knots.
Sig waves...........10 to 14 feet.
Ocnl waves..........Around 17 feet.

.THURSDAY...
Weather.............Mostly cloudy with chance of snow showers.
Sfc winds...........Southwest gales to 45 knots.
100-ft winds........Southwest storm force winds to 55 knots.
Sig waves...........15 to 20 feet.
Ocnl waves..........Around 24 feet.

.THURSDAY NIGHT...
Weather.............Mostly cloudy with chance of snow showers.
Sfc winds...........West gales to 45 knots.
100-ft winds........West storm force winds to 55 knots.
Sig waves...........15 to 20 feet.
Ocnl waves..........Around 26 feet.


.FORECAST DAYS 3 THROUGH 5......
.FRIDAY...Very windy. Chance of snow showers in the morning, then
snow showers in the afternoon. chance of snow showers. West gales
to 40 knots. Waves 12 to 16 feet.
.SATURDAY...Chance of snow showers. Northwest winds 10 to
15 knots. Waves 3 to 5 feet.
.SUNDAY...Chance of snow showers in the afternoon and evening.
East winds 10 to 15 knots. Waves 3 to 5 feet.

$$

LOZ061-212100-
MAFOR 2116/
ONTARIO WEST 1/2 12447 11547 11540 11547 12540 11650. Waves 4 to
7 feet building to 8 to 11 feet this afternoon. Waves 8 to 12
feet tonight and Thursday morning.

ONTARIO EAST 1/2 13440 13540 11550 11650. A chance of snow
showers. Waves 5 to 8 feet building to 7 to 10 feet this
afternoon. Waves 7 to 10 feet building to 9 to 13 feet tonight.
Waves 10 to 14 feet Thursday morning.

$$

Occasional waves will only be displayed when values meet or exceed 5 feet / 2 meters.

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