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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm est sun jan 11 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 29.4 inch low over nova scotia this evening will move 
northeast to newfoundland by monday while deepening to 28.3 inches. 
in its wake...a 30.5 inch high over the tennessee valley will 
briefly ridge across the lower lakes tonight...with its axis then 
sliding east across new england monday. another 29.3 inch low will 
then move from western ontario province tuesday to southern quebec 
wednesday. this system will push its trailing cold front across the 
lake wednesday night, with a secondary 29.4 inch coastal low then 
developing along the mid-atlantic coastline wednesday night and 
lingering just off the southern new england coast through thursday 
night.


loz063>065-121000-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm est sun jan 11 2026

.overnight...northwest winds to 30 knots becoming west.
scattered flurries. waves 10 to 14 feet. waves occasionally
around 18 feet. 
.monday...west winds 15 to 25 knots increasing to 30 knots. a
chance of snow showers early, then lake effect snow showers from
late morning on. waves 5 to 9 feet building to 7 to 10 feet.
waves occasionally around 13 feet. 
.monday night...west winds to 30 knots diminishing to 15 to
25 knots. lake effect snow and rain showers. waves 6 to 10 feet
subsiding to 5 to 8 feet. waves occasionally around 13 feet. 
.tuesday...southwest winds 15 to 20 knots becoming south. a
chance of snow showers in the morning. waves 3 to 6 feet
subsiding to 2 to 4 feet. 
.tuesday night...south winds 15 to 25 knots becoming southwest.
rain showers likely. waves 3 to 6 feet. 
.wednesday...southwest winds 15 to 25 knots becoming north. rain
showers likely during the day, then snow and rain showers likely
wednesday night. waves 3 to 6 feet. 
.thursday...north winds 15 to 25 knots. snow showers likely
during the day, then a chance of snow showers thursday night.
waves 4 to 7 feet subsiding to 3 to 6 feet. waves occasionally
around 9 feet. 
.friday...northwest winds 15 to 20 knots becoming southwest. a
chance of snow showers. waves 3 to 5 feet subsiding to 2 to
4 feet. 

$$