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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt fri aug 29 2025

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 29.9 inch elongated low over southern quebec, has 
placed a cold front across the southeastern side of the lake this 
morning. a 30.2 inch high over the upper great lakes will then 
settle across the lake later today and into the weekend, before 
drifting just east of the lake on monday.


loz063-291500-
lake ontario open waters from hamlin beach to sodus bay-
402 am edt fri aug 29 2025

.today...northwest winds 10 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 2 feet. 
.tonight...northwest winds 10 to 15 knots. waves 2 to 3 feet. 
.saturday...northwest winds 10 to 15 knots becoming west. waves
around 2 feet. 
.saturday night...northwest winds 5 to 10 knots. waves 1 to
2 feet. 
.sunday...northwest winds 10 knots or less becoming south. waves
1 foot or less. 
.monday...southeast winds less than 10 knots. waves 1 foot or
less. 
.tuesday...south winds 10 knots or less. waves 1 foot or less. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt fri aug 29 2025

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 29.9 inch elongated low over southern quebec, has 
placed a cold front across the southeastern side of the lake this 
morning. a 30.2 inch high over the upper great lakes will then 
settle across the lake later today and into the weekend, before 
drifting just east of the lake on monday.


loz064-065-291500-
lake ontario open waters from sodus bay to the saint lawrence
river-
402 am edt fri aug 29 2025

.today...northwest winds 10 to 15 knots becoming west. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.tonight...northwest winds 10 to 15 knots. waves 1 to 3 feet. 
.saturday...northwest winds 10 to 15 knots becoming west. waves
1 to 2 feet. 
.saturday night...west winds 5 to 10 knots becoming northwest.
waves 2 feet or less. 
.sunday...northwest winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.monday...southeast winds less than 10 knots. waves 1 foot or
less. 
.tuesday...south winds 10 knots or less. waves 1 foot or less. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 am edt fri aug 29 2025


slz022-024-291500-
saint lawrence river from cape vincent to saint regis
402 am edt fri aug 29 2025

.today...northwest winds 5 to 10 knots becoming west. a chance of
showers through early afternoon, then showers likely late. 
.tonight...west winds less than 10 knots. a chance of showers in
the evening. 
.saturday...west winds 10 knots or less. a chance of showers. 
.saturday night...west winds less than 10 knots. a chance of
showers in the evening. 
.sunday...light and variable winds. mainly clear. 
.monday...light and variable winds. mainly clear, then becoming
partly cloudy. 
.tuesday...light and variable winds. partly cloudy. 

$$