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open lake forecast for lake ontario
national weather service buffalo ny
402 pm est sun nov 1 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 30.5 inch high along the mid atlantic coastline will 
slowly drift offshore through tuesday. a 29.5 inch low is then 
forecast to move very slowly from the upper mississippi valley 
tuesday to the upper great lakes by wednesday, and then into western 
quebec thursday and friday.


loz063>065-020400-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm est sun nov 1 2026

.tonight...southeast winds 10 to 15 knots becoming southwest.
waves 2 feet or less. 
.monday...south winds 5 to 15 knots. waves 2 feet or less. 
.monday night...south winds 10 knots or less. waves 2 feet or
less. 
.tuesday...south winds 5 to 15 knots becoming southeast. a chance
of showers. waves 2 feet or less. 
.tuesday night...south winds 10 to 15 knots. waves 1 to 3 feet. 
.wednesday...south winds 15 to 20 knots. showers likely wednesday
night. waves 1 to 3 feet. 
.thursday...south winds 15 to 20 knots becoming southwest 5 to
15 knots. showers. waves 1 to 3 feet. 
.friday...southwest winds 10 to 15 knots becoming north. a chance
of showers. waves 1 to 3 feet. 

$$

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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 1 2026


slz022-024-020400-
saint lawrence river from cape vincent to saint regis
403 pm est sun nov 1 2026

.tonight...southwest winds 5 to 10 knots. partly cloudy early,
then becoming mostly cloudy. 
.monday...southwest winds 5 to 10 knots. mostly sunny. 
.monday night...southwest winds 10 knots or less becoming south.
mostly cloudy. 
.tuesday...south winds 10 knots or less. a chance of showers in
the morning, then showers likely in the afternoon. 
.tuesday night...south winds 10 knots or less. showers likely in
the evening. 
.wednesday...south winds 5 to 15 knots. a chance of showers
wednesday night. 
.thursday...south winds 10 knots or less becoming southwest.
showers likely. 
.friday...west winds 5 to 10 knots becoming north. showers likely
during the day, then a chance of showers friday night. 

$$