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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt wed oct 22 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 29.4 inch low over the upper great lakes will slowly 
track east through tonight while weakening to 29.5 inches. this low
will then move from central quebec thursday morning to far northern
quebec by friday. a 30.4 inch surface high will move towards the 
region saturday, and then settle across the lower great lakes 
through sunday.


loz062-222100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt wed oct 22 2025

.this afternoon...southwest winds to 30 knots diminishing to 15 to
25 knots. a chance of waterspouts. a chance of showers, then
showers late. waves 3 to 6 feet. 
.tonight...southwest winds 15 to 20 knots becoming west. a chance
of waterspouts. showers in the evening, then a chance of showers
after midnight. showers likely late. waves 2 to 4 feet building
to 3 to 6 feet. 
.thursday...west winds 15 to 20 knots. a chance of waterspouts.
showers. waves 3 to 6 feet. 
.thursday night...northwest winds 15 to 20 knots becoming west. a
chance of waterspouts. showers. waves 3 to 5 feet. 
.friday...west winds 15 to 20 knots becoming northwest 10 to
15 knots. a chance of waterspouts during the day. showers. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.saturday...northwest winds 5 to 10 knots becoming north. a
chance of showers during the day. waves 2 feet or less. 
.sunday...northeast winds 10 knots or less becoming east. waves
1 foot or less. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt wed oct 22 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 29.4 inch low over the upper great lakes will slowly 
track east through tonight while weakening to 29.5 inches. this low
will then move from central quebec thursday morning to far northern
quebec by friday. a 30.4 inch surface high will move towards the 
region saturday, and then settle across the lower great lakes 
through sunday.


loz063>065-222100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt wed oct 22 2025

.this afternoon...southwest winds 15 to 25 knots. a chance of
waterspouts. a chance of showers, then showers late. waves 3 to
6 feet building to 4 to 7 feet. waves occasionally around 9 feet.
.tonight...southwest winds 15 to 25 knots. a chance of
waterspouts. showers. waves 5 to 8 feet. waves occasionally
around 10 feet. 
.thursday...west winds 15 to 25 knots. a chance of waterspouts.
showers. waves 4 to 7 feet subsiding to 3 to 6 feet. waves
occasionally around 9 feet. 
.thursday night...west winds 15 to 20 knots. a chance of
waterspouts. showers. waves 3 to 6 feet. 
.friday...west winds 15 to 20 knots becoming northwest 10 to
15 knots. a chance of waterspouts during the day. showers. waves
3 to 5 feet subsiding to 1 to 3 feet. 
.saturday...northwest winds 5 to 10 knots becoming north. showers
likely during the day, then a chance of showers saturday night.
waves 2 feet or less. 
.sunday...north winds 10 knots or less becoming east. a chance of
showers during the day. waves 1 foot or less. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1002 am edt wed oct 22 2025


slz022-024-222100-
saint lawrence river from cape vincent to saint regis
1002 am edt wed oct 22 2025

.this afternoon...southwest winds 15 to 20 knots diminishing to
10 to 15 knots. showers.
.tonight...southwest winds 5 to 15 knots. showers.
.thursday...southwest winds 5 to 10 knots becoming west. showers.
.thursday night...west winds 10 knots or less. rain showers. 
.friday...west winds less than 10 knots. rain showers likely
during the day, then a chance of rain showers friday night. 
.saturday...northwest winds less than 10 knots. a chance of rain
showers during the day. 
.sunday...north winds less than 10 knots becoming northeast.
partly cloudy. 

$$