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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 pm est fri nov 6 2026


slz022-024-070400-
saint lawrence river from cape vincent to saint regis
403 pm est fri nov 6 2026

.tonight...northeast winds less than 10 knots increasing to 10 to
15 knots. showers likely early, then a chance of showers. showers
likely late. 
.saturday...northeast winds 5 to 10 knots. showers.
.saturday night...north winds less than 10 knots becoming west.
rain showers. 
.sunday...west winds 5 to 15 knots becoming southwest. a chance
of rain showers. 
.sunday night...southwest winds 5 to 15 knots becoming west. a
chance of rain showers in the evening, then rain showers likely
overnight. 
.monday...west winds 5 to 10 knots becoming southwest. rain
showers likely during the day. 
.tuesday...southwest winds 5 to 15 knots becoming west less than
10 knots. a chance of rain showers. 
.wednesday...west winds 10 knots or less becoming northwest.
mostly cloudy. 

$$

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open lake forecast for lake america
national weather service buffalo ny
402 pm est fri nov 6 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 trough averaging 29.8 inches will impact the eastern 
great lakes through this weekend and into early next week. however, 
a narrow ridge of high pressure averaging 30.0 inches will move 
eastward across the eastern great lakes saturday night. another 
ridge averaging 30.0 inches should move eastward across the eastern 
great lakes later monday through monday night. a trough averaging 
29.8 inches from a passing cold front will cross the region tuesday, 
with a secondary surface trough dropping southward across the lake 
wednesday.


loz063>065-070400-
lake america open waters from hamlin beach to the saint lawrence
river-
402 pm est fri nov 6 2026

.tonight...west winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of waterspouts. a chance of showers early,
then showers from late evening on. waves 1 to 3 feet building to
2 to 4 feet. 
.saturday...west winds 10 to 15 knots becoming northwest. a
chance of waterspouts. showers. waves 2 to 4 feet subsiding to
1 to 3 feet. 
.saturday night...northwest winds 10 to 15 knots increasing to
15 to 20 knots. a chance of waterspouts. showers. waves 1 to
3 feet building to 3 to 6 feet. 
.sunday...west winds 15 to 25 knots. a chance of waterspouts.
showers likely in the morning, then a chance of showers in the
afternoon. waves 5 to 8 feet building to 6 to 9 feet. waves
occasionally around 11 feet. 
.sunday night...west winds to 30 knots. a chance of waterspouts
in the evening. showers. waves 6 to 10 feet building to 8 to
11 feet. waves occasionally around 14 feet. 
.monday...northwest winds to 30 knots becoming southwest 15 to
25 knots. showers likely during the day. waves 6 to 10 feet
subsiding to 3 to 6 feet. waves occasionally around 13 feet. 
.tuesday...southwest winds 15 to 25 knots becoming west. a chance
of showers tuesday night. waves 5 to 8 feet subsiding to 3 to
5 feet. waves occasionally around 10 feet. 
.wednesday...northwest winds 15 to 20 knots becoming north 10 to
15 knots. a chance of rain showers. waves 3 to 5 feet subsiding
to 1 to 3 feet. 

$$