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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
410 am edt wed apr 8 2026


slz022-024-081500-
saint lawrence river from cape vincent to saint regis
410 am edt wed apr 8 2026

.today...southwest winds 10 knots or less. sunny.
.tonight...southeast winds 10 knots or less becoming south 10 to
15 knots. mainly clear. 
.thursday...south winds 10 to 15 knots. a chance of rain showers
in the afternoon. 
.thursday night...southwest winds 5 to 15 knots. a chance of
showers. 
.friday...west winds less than 10 knots. rain showers likely. 
.saturday...northwest winds 5 to 10 knots becoming light and
variable. becoming mainly clear. 
.sunday...south winds 10 knots or less increasing to 10 to
15 knots. rain showers likely sunday night. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
409 am edt wed apr 8 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 30.6 inch high over the lower great lakes will move 
east across new england today, before moving southeast of nova 
scotia thursday. a 29.5 inch low will move from the north shore of 
lake superior tonight to northern quebec by thursday night, with a 
trailing cold front crossing the lake thursday night and friday. a 
30.5 inch high is then forecast to build into the central great 
lakes saturday, then drift east to new england by sunday.


loz062-081500-
lake ontario open waters from the niagara river to hamlin beach-
409 am edt wed apr 8 2026

.today...southeast winds 5 to 15 knots becoming east 15 to
20 knots. waves 2 feet or less building to 2 to 4 feet. 
.tonight...east winds 15 to 20 knots becoming south. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.thursday...south winds 15 to 20 knots becoming southwest. a
chance of showers in the afternoon. waves 2 to 4 feet building to
3 to 5 feet. 
.thursday night...southwest winds 15 to 20 knots becoming
northwest 5 to 15 knots. a chance of rain showers. waves 3 to
5 feet subsiding to 1 to 3 feet. 
.friday...north winds 10 knots or less becoming northwest. rain
showers. waves 1 foot or less. 
.saturday...northwest winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.sunday...east winds 5 to 15 knots becoming southwest 15 to
20 knots. a chance of rain showers sunday night. waves 2 feet or
less building to 2 to 4 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
409 am edt wed apr 8 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 30.6 inch high over the lower great lakes will move 
east across new england today, before moving southeast of nova 
scotia thursday. a 29.5 inch low will move from the north shore of 
lake superior tonight to northern quebec by thursday night, with a 
trailing cold front crossing the lake thursday night and friday. a 
30.5 inch high is then forecast to build into the central great 
lakes saturday, then drift east to new england by sunday.


loz063>065-081500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
409 am edt wed apr 8 2026

.today...west winds 5 to 15 knots becoming east 15 to 20 knots.
waves 1 to 3 feet. 
.tonight...east winds 15 to 25 knots becoming south. waves 1 to
3 feet building to 3 to 5 feet. 
.thursday...south winds 15 to 25 knots. a chance of rain showers
in the afternoon. waves 3 to 6 feet. 
.thursday night...south winds 15 to 20 knots becoming west and
diminishing to 5 to 10 knots. a chance of rain showers in the
evening. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.friday...northwest winds 5 to 10 knots. rain showers likely.
waves 2 feet or less. 
.saturday...northwest winds 10 knots or less becoming south.
waves 2 feet or less. 
.sunday...southeast winds 5 to 10 knots becoming south and
increasing to 15 to 25 knots. a chance of rain showers sunday
night. waves 1 foot or less building to 3 to 6 feet. 

$$