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open lake forecast for lake ontario
national weather service buffalo ny
1003 am est wed feb 25 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 track from central ontario to the 
ottawa valley today, with its trailing cold front crossing the lake 
this afternoon. the low will then weaken as it makes its way 
northeastward across quebec province tonight and thursday...with a 
30.0 inch high forecast to slide from the central great lakes to the 
new england coastline thursday night and friday. another 29.2 inch 
low is then expected to deepen to 28.9 inches as it moves from north 
of lake superior to northern quebec friday night and saturday...with 
a 30.6 inch high then forecast to settle across the great lakes 
saturday night and sunday.


loz062-063-252200-
lake ontario open waters from the niagara river to sodus bay-
1003 am est wed feb 25 2026

.rest of today...southwest winds 20 to 25 knots becoming west. a
chance of snow showers late this morning, then snow showers
likely early this afternoon. a chance of snow showers late. waves
5 to 8 feet. waves occasionally around 10 feet. 
.tonight...west winds 15 to 25 knots. lake effect snow showers
likely. waves 5 to 9 feet. waves occasionally around 11 feet. 
.thursday...west winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of snow showers. waves 4 to 7 feet subsiding
to 1 to 3 feet. waves occasionally around 9 feet. 
.thursday night...west winds 5 to 10 knots becoming southwest.
waves 1 to 2 feet. 
.friday...southwest winds 10 to 15 knots increasing to 15 to
25 knots. waves 1 to 3 feet building to 3 to 6 feet. 
.saturday...southwest winds 15 to 20 knots becoming northwest. a
chance of snow showers saturday night. waves 3 to 6 feet. 
.sunday...northwest winds 15 to 20 knots becoming northeast.
waves 3 to 6 feet subsiding to 2 to 4 feet. 

$$

fzus61 kbuf 251503
glflo 
expires:202602252200;;233952

open lake forecast for lake ontario
national weather service buffalo ny
1003 am est wed feb 25 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 track from central ontario to the 
ottawa valley today, with its trailing cold front crossing the lake 
this afternoon. the low will then weaken as it makes its way 
northeastward across quebec province tonight and thursday...with a 
30.0 inch high forecast to slide from the central great lakes to the 
new england coastline thursday night and friday. another 29.2 inch 
low is then expected to deepen to 28.9 inches as it moves from north 
of lake superior to northern quebec friday night and saturday...with 
a 30.6 inch high then forecast to settle across the great lakes 
saturday night and sunday.


loz064-065-252200-
lake ontario open waters from sodus bay to the saint lawrence
river-
1003 am est wed feb 25 2026

.rest of today...southwest winds 15 to 25 knots becoming west.
snow showers. waves 3 to 6 feet building to 5 to 8 feet. waves
occasionally around 10 feet. 
.tonight...west winds 15 to 25 knots. lake effect snow showers.
waves 5 to 9 feet. waves occasionally around 11 feet. 
.thursday...west winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of snow showers. waves 4 to 7 feet subsiding
to 1 to 3 feet. waves occasionally around 9 feet. 
.thursday night...west winds 5 to 10 knots becoming south. waves
1 to 3 feet subsiding to 1 foot or less. 
.friday...south winds 10 to 15 knots increasing to 15 to
25 knots. waves 2 feet or less building to 3 to 6 feet. 
.saturday...southwest winds 15 to 25 knots becoming northwest. a
chance of snow showers saturday night. waves 3 to 6 feet. 
.sunday...north winds 15 to 20 knots becoming northeast. a chance
of snow showers during the day. waves 3 to 6 feet subsiding to
2 to 4 feet. 

$$