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open lake forecast for lake ontario
national weather service buffalo ny
1002 am est thu nov 6 2025

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 30.2 inch high will build from the ohio valley to the 
mid-atlantic states today, then will slide east and out to sea 
tonight. a 29.4 inch low over the upper great lakes will then deepen 
to 29.2 inches as it makes its way to western quebec friday and 
friday night, with its trailing cold front crossing the lake friday 
night. another 29.8 inch surface low will deepen to 29.6 inches as 
it tracks from the ohio valley to new england sunday and monday.


loz062-062200-
lake ontario open waters from the niagara river to hamlin beach-
1002 am est thu nov 6 2025

.this afternoon...northwest winds 15 to 20 knots becoming west.
waves 3 to 6 feet subsiding to 2 to 4 feet. 
.tonight...west winds 10 to 15 knots becoming south. waves 1 to
3 feet. 
.friday...south winds 15 to 25 knots becoming southwest to
30 knots. showers. waves 2 to 4 feet building to 5 to 8 feet.
waves occasionally around 10 feet. 
.friday night...southwest winds 15 to 20 knots becoming west.
showers. waves 3 to 6 feet. 
.saturday...northwest winds 15 to 20 knots becoming east. a
chance of showers during the day, then showers likely saturday
night. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.sunday...east winds 15 to 25 knots becoming northwest 15 to
20 knots. rain showers during the day, then rain and snow showers
likely sunday night. waves 5 to 8 feet. waves occasionally around
10 feet. 
.monday...northwest winds 15 to 25 knots. a chance of snow
showers during the day, then snow showers likely monday night.
waves 3 to 6 feet building to 5 to 8 feet. waves occasionally
around 10 feet. 

$$

fzus61 kbuf 061502
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expires:202511062200;;948729

open lake forecast for lake ontario
national weather service buffalo ny
1002 am est thu nov 6 2025

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 30.2 inch high will build from the ohio valley to the 
mid-atlantic states today, then will slide east and out to sea 
tonight. a 29.4 inch low over the upper great lakes will then deepen 
to 29.2 inches as it makes its way to western quebec friday and 
friday night, with its trailing cold front crossing the lake friday 
night. another 29.8 inch surface low will deepen to 29.6 inches as 
it tracks from the ohio valley to new england sunday and monday.


loz063>065-062200-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am est thu nov 6 2025

.this afternoon...northwest winds 15 to 25 knots becoming west.
waves 4 to 7 feet subsiding to 3 to 6 feet. waves occasionally
around 9 feet. 
.tonight...west winds 15 to 20 knots becoming south. waves 3 to
5 feet subsiding to 1 to 3 feet. 
.friday...south winds 15 to 25 knots increasing to 30 knots. a
chance of showers in the morning, then showers in the afternoon.
waves 3 to 5 feet building to 5 to 9 feet. waves occasionally
around 11 feet. 
.friday night...southwest winds to 30 knots becoming west 15 to
25 knots. showers. waves 5 to 8 feet subsiding to 4 to 7 feet.
waves occasionally around 10 feet. 
.saturday...west winds 15 to 20 knots becoming northeast. rain
showers likely. waves 4 to 7 feet subsiding to 2 to 4 feet. waves
occasionally around 9 feet. 
.sunday...east winds 15 to 25 knots becoming west. rain showers
during the day, then rain showers with snow showers likely sunday
night. waves 3 to 6 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 
.monday...west winds 15 to 25 knots increasing to 30 knots. snow
and rain showers likely during the day, then snow showers monday
night. waves 3 to 6 feet building to 6 to 9 feet. waves
occasionally around 11 feet. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1002 am est thu nov 6 2025


slz022-062200-
saint lawrence river from cape vincent to ogdensburg-
1002 am est thu nov 6 2025

.this afternoon...northwest winds 5 to 15 knots becoming west.
mostly sunny. 
.tonight...west winds 10 knots or less becoming south. partly
cloudy through the early overnight, then becoming mostly cloudy. 
.friday...south winds 10 to 15 knots increasing to 15 to
20 knots. a chance of rain showers in the morning, then rain
showers in the afternoon. 
.friday night...south winds 15 to 20 knots becoming southwest
10 to 15 knots. showers.
.saturday...west winds 10 knots or less becoming northeast. rain
showers during the day, then rain showers likely with a chance of
snow showers saturday night. 
.sunday...northeast winds 5 to 10 knots becoming west. rain
showers with a chance of snow showers during the day, then rain
showers with snow showers likely sunday night. 
.monday...west winds 5 to 10 knots. snow showers likely. 

$$