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open lake forecast for lake ontario
national weather service buffalo ny
402 am est tue nov 3 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 30.4 inch high just off the mid atlantic coastline 
will continue to slowly drift further offshore through today. 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 across quebec thursday and friday. following the passage of 
the low, a 29.9 inch troughing will linger across the lower great 
lakes saturday.


loz063>065-031600-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 am est tue nov 3 2026

.today...south winds 10 to 15 knots. a chance of showers this
morning. waves 2 feet or less. 
.tonight...south winds 10 to 15 knots. waves 1 to 3 feet. 
.wednesday...south winds 5 to 15 knots becoming southeast. waves
1 to 3 feet. 
.wednesday night...southeast winds 10 to 15 knots becoming south
15 to 20 knots. a chance of showers in the evening, then showers
overnight. waves 1 to 3 feet building to 2 to 4 feet. 
.thursday...south winds 15 to 20 knots becoming southwest 5 to
15 knots. showers during the day. waves 2 to 4 feet subsiding to
1 foot or less. 
.friday...southwest winds 10 knots or less becoming north 10 to
15 knots. a chance of showers friday night. waves 2 feet or less.
.saturday...north winds 10 to 15 knots becoming northwest. 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 am est tue nov 3 2026


slz022-024-031600-
saint lawrence river from cape vincent to saint regis
403 am est tue nov 3 2026

.today...southeast winds 5 to 10 knots becoming south. a chance
of showers early, then showers likely. a chance of showers late. 
.tonight...south winds 5 to 10 knots becoming southwest. partly
to mostly cloudy. 
.wednesday...southwest winds 10 knots or less. mostly sunny. 
.wednesday night...south winds 5 to 15 knots. showers likely
overnight. 
.thursday...south winds 5 to 15 knots becoming southwest. showers
during the day. 
.friday...west winds 10 knots or less becoming north. a chance of
showers friday night. 
.saturday...north winds 10 knots or less becoming northwest. a
chance of rain showers. 

$$