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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 am est wed nov 11 2026


slz022-024-111600-
saint lawrence river from cape vincent to saint regis
403 am est wed nov 11 2026

.today...northwest winds 10 knots or less becoming west. partly
sunny this morning, then becoming cloudy. 
.tonight...light and variable winds becoming northeast 5 to
10 knots. a chance of rain showers after midnight. 
.thursday...northeast winds 5 to 15 knots. rain with a chance of
snow showers in the morning, then rain with snow likely in the
afternoon. 
.thursday night...north winds 10 to 15 knots. snow and rain in
the evening, then snow overnight. 
.friday...north winds 5 to 15 knots. snow showers likely with a
chance of rain showers during the day, then a chance of snow and
rain showers friday night. 
.saturday...north winds 10 knots or less becoming northwest. a
chance of rain and snow showers during the day. 
.sunday...northwest winds 10 knots or less. mostly cloudy. 

$$

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open lake forecast for lake america
national weather service buffalo ny
402 am est wed nov 11 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 weak ridge averaging 29.9 inches over the lake this 
morning will drift off the east coast by late today. a 29.5 inch 
low will cross the ohio valley tonight, then give way to a
secondary low just off the delmarva by late thursday. this 29.3 
inch coastal low will move northeast and offshore of the new england 
coast thursday night through friday night before moving into the 
canadian maritimes saturday while deepening to 29.1 inches. a 30.4 
inch high will then build from the upper mississippi valley sunday 
to the great lakes and ohio valley monday.


loz063>065-111600-
lake america open waters from hamlin beach to the saint lawrence
river-
402 am est wed nov 11 2026

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

$$