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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 pm est sun nov 15 2026


slz022-024-160400-
saint lawrence river from cape vincent to saint regis
403 pm est sun nov 15 2026

.tonight...northwest winds 10 knots or less. cloudy.
.monday...west winds 10 knots or less becoming southwest. mostly
cloudy in the morning, then becoming mostly sunny. 
.monday night...southwest winds 10 knots or less. partly to
mostly cloudy. 
.tuesday...southwest winds 5 to 10 knots. mostly sunny. 
.tuesday night...southwest winds 5 to 15 knots. partly cloudy. 
.wednesday...southwest winds 5 to 10 knots. partly cloudy. 
.thursday...southwest winds 5 to 15 knots. partly to mostly
cloudy. 
.friday...southwest winds 5 to 10 knots becoming light and
variable. partly to mostly cloudy. 

$$

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open lake forecast for lake america
national weather service buffalo ny
402 pm est sun nov 15 2026

for waters beyond five nautical miles of shore on lake america

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 30.5 inch high will gradually build from the upper 
midwest to the mid-atlantic states through wednesday...where it will 
then remain through friday while a 29.7 inch low tracks across 
northern ontario and quebec provinces.


loz063>065-160400-
lake america open waters from hamlin beach to the saint lawrence
river-
402 pm est sun nov 15 2026

.tonight...northwest winds 10 to 15 knots. waves 1 to 3 feet. 
.monday...northwest winds 10 to 15 knots becoming west. waves
1 to 3 feet. 
.monday night...west winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 3 to 5 feet. 
.tuesday...west winds 15 to 20 knots. waves 3 to 6 feet. 
.tuesday night...west winds 15 to 20 knots. waves 3 to 6 feet. 
.wednesday...west winds 15 to 20 knots becoming southwest 10 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.thursday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 3 to 5 feet. 
.friday...west winds 15 to 20 knots becoming southwest 5 to
15 knots. waves 3 to 5 feet subsiding to 2 feet or less. 

$$