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open lake forecast for lake ontario
national weather service buffalo ny
402 am est mon jan 19 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 29.6 inch low will move from near lake superior 
this morning to central quebec by tonight, while pushing an arctic 
cold front across the lake this afternoon. a 30.5 inch high will 
then slide east across the southeastern states tuesday and tuesday 
night, with a 29.8 inch low then making its way across the central 
great lakes wednesday, to central quebec thursday, and across 
atlantic canada friday.


loz063>065-191600-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am est mon jan 19 2026

...gale warning in effect through late tuesday night...
...heavy freezing spray warning in effect through late tuesday
night...

.today...southwest winds to 30 knots increasing to 40 knot gales
this afternoon. heavy freezing spray. lake effect snow showers.
waves 5 to 8 feet building to 13 to 17 feet. waves occasionally
around 22 feet. 
.tonight...west gales to 40 knots diminishing to 30 knots. heavy
freezing spray. lake effect snow showers. waves 15 to 20 feet
subsiding to 12 to 16 feet. waves occasionally around 26 feet. 
.tuesday...west winds to 30 knots increasing to 35 knot gales.
heavy freezing spray. lake effect snow showers. waves 10 to
15 feet. waves occasionally around 19 feet. 
.tuesday night...west winds to 30 knots becoming southwest. heavy
freezing spray. lake effect snow showers in the evening, then a
chance of snow showers overnight. waves 10 to 15 feet subsiding
to 7 to 11 feet. waves occasionally around 19 feet. 
.wednesday...south winds to 30 knots becoming southwest. snow
showers likely. waves 5 to 8 feet building to 10 to 13 feet.
waves occasionally around 16 feet. 
.thursday...west gales to 35 knots diminishing to 30 knots. snow
showers likely during the day, then a chance of snow showers
thursday night. waves 10 to 14 feet. waves occasionally around
18 feet. 
.friday...west winds 15 to 25 knots. a chance of snow showers.
waves 7 to 10 feet subsiding to 3 to 6 feet. waves occasionally
around 13 feet. 

$$