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open lake forecast for lake ontario
national weather service buffalo ny
104 am est wed jan 21 2026

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 29.8 inch low will move from the upper great lakes 
wednesday 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 
friday. at the same time...a large 31.0 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.


loz063>065-211000-
lake ontario open waters from hamlin beach to the saint lawrence
river-
104 am est wed jan 21 2026

...gale watch in effect from late tonight through friday
evening...

.overnight...southwest winds to 30 knots. a chance of snow
showers. waves 7 to 10 feet. waves occasionally around 13 feet. 
.wednesday...south winds to 30 knots. a chance of snow showers
late in the morning. snow showers in the afternoon. waves 5 to
9 feet building to 7 to 10 feet. waves occasionally around
13 feet. 
.wednesday night...south winds to 30 knots becoming southwest.
snow showers likely. waves 7 to 10 feet building to 9 to 13 feet.
waves occasionally around 16 feet. 
.thursday...southwest gales to 35 knots becoming west to
40 knots. a chance of lake effect snow showers in the morning,
then lake effect snow showers likely in the afternoon. waves
10 to 15 feet. waves occasionally around 19 feet. 
.thursday night...west gales to 40 knots diminishing to 35 knots.
lake effect snow showers. waves 11 to 15 feet. waves occasionally
around 19 feet. 
.friday...west gales to 35 knots becoming northwest and
diminishing to 30 knots. lake effect snow showers. waves 10 to
15 feet subsiding to 7 to 10 feet. waves occasionally around
19 feet. 
.saturday...northwest winds 15 to 20 knots becoming northeast
10 to 15 knots. a chance of snow showers. waves 3 to 6 feet
subsiding to 2 to 4 feet. 
.sunday...east winds 10 to 15 knots becoming northeast. a chance
of snow showers. waves 2 to 4 feet building to 3 to 5 feet. 

$$