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open lake forecast for lake ontario
national weather service buffalo ny
402 am est tue jan 20 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 29.5 inch low over quebec this evening will deepen to 
29.3 inches as it moves to labrador by tuesday afternoon. meanwhile, 
a 30.6 inch high will build from the tennessee valley tuesday to off 
the mid atlantic coast wednesday. another 29.8 inch low will move 
from the upper great lakes wednesday to southern quebec by thursday, 
then to the canadian maritimes by friday. an arctic cold front will 
move across the lower great lakes friday.


loz063>065-201600-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am est tue jan 20 2026

...heavy freezing spray warning in effect through late tonight...

.today...west winds to 30 knots. heavy freezing spray. lake
effect snow showers. waves 10 to 15 feet. waves occasionally
around 19 feet. 
.tonight...west winds to 30 knots becoming southwest. heavy
freezing spray through the early overnight. lake effect snow
showers in the evening, then a chance of snow showers after
midnight. waves 10 to 15 feet subsiding to 7 to 11 feet. waves
occasionally around 19 feet. 
.wednesday...south winds to 30 knots. snow showers likely. waves
5 to 8 feet. waves occasionally around 10 feet. 
.wednesday night...south winds to 30 knots becoming southwest.
snow showers likely. waves 7 to 11 feet building to 10 to
14 feet. waves occasionally around 18 feet. 
.thursday...west winds to 30 knots. snow showers likely. waves
10 to 14 feet building to 13 to 18 feet. waves occasionally
around 23 feet. 
.friday...west winds to 30 knots becoming northwest 15 to
25 knots. snow showers. waves 11 to 16 feet subsiding to 7 to
10 feet. waves occasionally around 20 feet. 
.saturday...northwest winds 15 to 20 knots becoming north. a
chance of snow showers. waves 3 to 6 feet subsiding to 1 to
3 feet. 

$$