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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 pm est tue nov 10 2026


slz022-024-110400-
saint lawrence river from cape vincent to saint regis
403 pm est tue nov 10 2026

.tonight...west winds 10 knots or less. a chance of rain showers
this evening. 
.wednesday...west winds less than 10 knots. partly sunny in the
morning, then becoming mostly cloudy. 
.wednesday night...light and variable winds becoming northeast
5 to 10 knots. rain showers. 
.thursday...northeast winds 5 to 15 knots. rain showers in the
morning, then rain and snow showers likely in the afternoon. 
.thursday night...northeast winds 10 to 15 knots becoming north.
rain and snow showers likely in the evening, then a chance of
snow and rain showers overnight. 
.friday...north winds 5 to 10 knots. a chance of snow and rain
showers. 
.saturday...north winds 5 to 10 knots becoming northwest. a
chance of rain and snow showers during the day, then a chance of
rain showers saturday night. 
.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 pm est tue nov 10 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 high pressure ridge averaging 29.9 inches builds from 
the upper midwest through tonight and then exits toward new england 
on wednesday. a trough averaging 29.8 inches should overspread the 
lake from the southwestern great lakes and vicinity this wednesday 
night through thursday as an embedded low moves from near the lower 
ohio valley to atlantic waters near new jersey and long island, and 
deepens to 29.4 inches. the trough should average 29.9 inches and 
linger over the lake thursday night through saturday as the embedded 
low wobbles northeastward to atlantic waters near newfoundland and 
deepens to 29.0 inches. during saturday night through sunday, a 
ridge averaging 30.2 inches should build from northern ontario and 
the northwestern great lakes.


loz062-110400-
lake america open waters from the niagara river to hamlin beach-
402 pm est tue nov 10 2026

.tonight...west winds 15 to 25 knots diminishing to 5 to
15 knots. waves 4 to 7 feet subsiding to 1 to 3 feet. waves
occasionally around 9 feet. 
.wednesday...west winds less than 10 knots becoming north. a
chance of showers late. waves 2 feet or less. 
.wednesday night...east winds 5 to 15 knots becoming northeast
15 to 20 knots. showers. waves 2 feet or less building to 2 to
4 feet. 
.thursday...northeast winds 20 to 25 knots becoming north.
showers. waves 4 to 7 feet. waves occasionally around 9 feet. 
.thursday night...north winds 15 to 25 knots. a chance of
showers. waves 3 to 6 feet. 
.friday...north winds 15 to 20 knots. a chance of showers. waves
3 to 5 feet subsiding to 2 to 4 feet. 
.saturday...north winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers during the day. waves 2 to 4 feet. 
.sunday...north winds 5 to 15 knots. waves 1 to 3 feet. 

$$

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open lake forecast for lake america
national weather service buffalo ny
402 pm est tue nov 10 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 high pressure ridge averaging 29.9 inches builds from 
the upper midwest through tonight and then exits toward new england 
on wednesday. a trough averaging 29.8 inches should overspread the 
lake from the southwestern great lakes and vicinity this wednesday 
night through thursday as an embedded low moves from near the lower 
ohio valley to atlantic waters near new jersey and long island, and 
deepens to 29.4 inches. the trough should average 29.9 inches and 
linger over the lake thursday night through saturday as the embedded 
low wobbles northeastward to atlantic waters near newfoundland and 
deepens to 29.0 inches. during saturday night through sunday, a 
ridge averaging 30.2 inches should build from northern ontario and 
the northwestern great lakes.


loz063>065-110400-
lake america open waters from hamlin beach to the saint lawrence
river-
402 pm est tue nov 10 2026

.tonight...west winds 15 to 25 knots becoming northwest and
diminishing to 10 to 15 knots. waves 5 to 9 feet subsiding to
2 to 4 feet. waves occasionally around 11 feet. 
.wednesday...northwest winds 10 knots or less becoming north.
waves 1 to 3 feet subsiding to 1 foot or less. 
.wednesday night...east winds 5 to 15 knots increasing to 15 to
20 knots. showers. waves 2 feet or less building to 2 to 4 feet. 
.thursday...northeast winds 15 to 25 knots becoming north.
showers. waves 3 to 6 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 
.thursday night...north winds 20 to 25 knots. rain showers. waves
4 to 7 feet. waves occasionally around 9 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...north winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers during the day. waves 2 to 4 feet
subsiding to 1 to 3 feet. 

$$