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open lake forecast for lake ontario
national weather service buffalo ny
1002 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>065-192200-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am est mon jan 19 2026

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

.this afternoon...southwest winds to 30 knots increasing to
40 knot gales. heavy freezing spray. 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. snow showers early, then lake effect snow late in
the evening. a chance of snow showers after midnight. 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. snow showers in the morning, then lake
effect snow in the afternoon. waves 10 to 15 feet. waves
occasionally around 19 feet. 
.tuesday night...west winds to 30 knots becoming southwest. heavy
freezing spray. snow showers likely 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. 

$$