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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 am edt fri oct 16 2026


slz022-024-162100-
saint lawrence river from cape vincent to saint regis
1003 am edt fri oct 16 2026

.this afternoon...south winds 10 to 15 knots becoming west.
periods of rain. 
.tonight...northwest winds 10 to 15 knots. a chance of rain
showers early. 
.saturday...northwest winds 5 to 15 knots. mostly sunny. 
.saturday night...west winds less than 10 knots becoming
southwest. mainly clear. 
.sunday...southwest winds 5 to 15 knots. mainly clear. 
.monday...southwest winds 5 to 10 knots becoming light and
variable. mainly clear. 
.tuesday...light and variable winds. mainly clear. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt fri oct 16 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 29.5 inch low will move across the saint lawrence 
valley this afternoon before reaching the canadian maritimes by 
saturday while deepening to 29.1 inches. a 30.5 inch high will then 
build into the ohio valley saturday night before expanding across 
the lower great lakes and new england sunday through monday. a broad 
ridge of high pressure averaging 30.4 inches will remain in place 
across the ohio valley and great lakes much of next week.


loz063>065-162100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 am edt fri oct 16 2026

.rest of today...southwest winds 15 to 25 knots becoming west to
30 knots. periods of rain, then a chance of showers late. waves
5 to 8 feet. waves occasionally around 10 feet. 
.tonight...northwest winds 20 to 25 knots becoming north. a
chance of showers early. waves 5 to 8 feet. waves occasionally
around 10 feet. 
.saturday...north winds 15 to 25 knots becoming northwest and
diminishing to 10 to 15 knots. waves 5 to 8 feet subsiding to
1 to 3 feet. waves occasionally around 10 feet. 
.saturday night...northwest winds 10 to 15 knots becoming
southwest. waves 1 to 3 feet. 
.sunday...southwest winds 10 to 15 knots becoming south. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.monday...south winds 5 to 15 knots becoming west less than
10 knots. waves 1 to 3 feet subsiding to 1 foot or less. 
.tuesday...north winds 10 knots or less becoming northeast. waves
1 foot or less. 

$$