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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 am edt sun aug 2 2026


slz022-024-022100-
saint lawrence river from cape vincent to saint regis
1003 am edt sun aug 2 2026

.rest of today...northeast winds 10 knots or less becoming
southeast. showers late this morning, then showers with a chance
of thunderstorms this afternoon. 
.tonight...southeast winds 5 to 10 knots becoming northwest.
showers with a chance of thunderstorms through the early
overnight, then showers late. 
.monday...northwest winds 5 to 10 knots. showers likely in the
morning, then a chance of showers in the afternoon. 
.monday night...northwest winds 10 knots or less becoming west. a
chance of showers in the evening. 
.tuesday...light and variable winds. mainly clear. 
.wednesday...south winds 10 knots or less. a chance of showers. 
.thursday...southwest winds less than 10 knots. a chance of
showers and thunderstorms. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt sun aug 2 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...an elongated 29.7 inch low will move from the ohio 
valley today to the lower great lakes tonight, with a remnant trough 
drifting towards new england monday. a 30.0 inch high will then 
build east across ontario and quebec monday through tuesday.


loz062-022100-
lake ontario open waters from the niagara river to hamlin beach-
1003 am edt sun aug 2 2026

.this afternoon...east winds 5 to 15 knots. showers with a chance
of thunderstorms. waves 1 to 3 feet. 
.tonight...northeast winds 5 to 15 knots becoming north. showers
with a chance of thunderstorms in the evening, then showers
likely after midnight. waves 1 to 2 feet. 
.monday...north winds 10 to 15 knots becoming west. waves 1 to
2 feet. 
.monday night...west winds 10 knots or less becoming northwest.
waves 2 feet or less. 
.tuesday...west winds 10 knots or less becoming southeast. waves
1 foot or less. 
.wednesday...south winds 10 knots or less becoming southwest. a
chance of showers. waves 1 foot or less. 
.thursday...southwest winds less than 10 knots. a chance of
showers thursday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt sun aug 2 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...an elongated 29.7 inch low will move from the ohio 
valley today to the lower great lakes tonight, with a remnant trough 
drifting towards new england monday. a 30.0 inch high will then 
build east across ontario and quebec monday through tuesday.


loz063>065-022100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 am edt sun aug 2 2026

.this afternoon...southeast winds 15 to 25 knots diminishing to
10 to 15 knots. showers with a chance of thunderstorms. waves
1 to 3 feet. 
.tonight...southeast winds 10 to 15 knots becoming northeast.
showers with a chance of thunderstorms through the early
overnight, then showers likely late. waves 1 to 3 feet. 
.monday...north winds 10 to 15 knots becoming west. waves 1 to
3 feet. 
.monday night...west winds 5 to 15 knots. waves 1 to 3 feet. 
.tuesday...west winds 10 knots or less becoming southeast. waves
1 foot or less. 
.wednesday...south winds 10 knots or less. a chance of showers
during the day, then a chance of showers and thunderstorms
wednesday night. waves 1 foot or less. 
.thursday...southwest winds 10 knots or less. a chance of
showers. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$