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open lake forecast for lake ontario
national weather service buffalo ny
403 pm est fri feb 27 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 29.2 inch low will strengthen to 29.0 inches as it 
moves from north of lake superior to northern quebec tonight and 
saturday while swinging a cold front across the lake late tonight 
and saturday morning, followed by a secondary cold front that will 
move across the lake saturday night. a 30.6 inch high will then 
settle across the great lakes sunday, new england monday, and across 
the western atlantic tuesday. a cold front will cross the lake late 
tuesday and tuesday night, followed by a 30.4 inch high building 
into the lower great lakes on wednesday.


loz064-065-280400-
lake ontario open waters from sodus bay to the saint lawrence
river-
403 pm est fri feb 27 2026

.tonight...south winds 15 to 25 knots increasing to 30 knots. a
chance of rain showers late. waves 1 to 3 feet building to 5 to
8 feet. waves occasionally around 10 feet. 
.saturday...southwest winds 15 to 25 knots becoming west. a
chance of rain showers early. waves 4 to 7 feet subsiding to 3 to
6 feet. waves occasionally around 9 feet. 
.saturday night...northwest winds 10 to 15 knots becoming north.
a chance of snow showers overnight. waves 3 to 5 feet subsiding
to 1 to 3 feet. 
.sunday...north winds 10 to 15 knots becoming northwest. a chance
of snow showers in the morning. waves 1 to 3 feet. 
.sunday night...northwest winds 5 to 15 knots becoming north.
waves 1 to 3 feet. 
.monday...north winds 5 to 10 knots becoming south and increasing
to 15 to 20 knots. waves 2 feet or less building to 2 to 4 feet. 
.tuesday...south winds 15 to 20 knots becoming west. a chance of
snow showers during the day, then a chance of snow and rain
showers tuesday night. waves 3 to 5 feet subsiding to 2 to
4 feet. 
.wednesday...north winds 15 to 20 knots becoming east. a chance
of snow showers during the day, then a chance of rain showers
wednesday night. waves 2 to 4 feet. 

$$