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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 am edt fri jul 24 2026


slz022-024-241500-
saint lawrence river from cape vincent to saint regis
403 am edt fri jul 24 2026

.today...southwest winds 5 to 10 knots. sunny.
.tonight...southwest winds less than 10 knots. mainly clear. 
.saturday...south winds 10 knots or less becoming southwest.
sunny.
.saturday night...southwest winds less than 10 knots. partly to
mostly cloudy. 
.sunday...south winds less than 10 knots. a chance of showers. 
.monday...south winds 10 knots or less. showers likely with a
chance of thunderstorms. 
.tuesday...south winds 10 knots or less becoming northwest.
showers likely with a chance of thunderstorms. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt fri jul 24 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 30.2 inch high over the lake this morning will 
drift east of the lake today, and linger over new england through 
saturday before weakening and drifting off the east coast sunday. a 
29.5 inch area of low pressure will develop over the western great 
lakes sunday night and move north of the lake monday and tuesday, 
with a cold front slowly easing across the lake tuesday.


loz063>065-241500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt fri jul 24 2026

.today...southwest winds 5 to 10 knots becoming northeast. waves
1 foot or less. 
.tonight...northeast winds 5 to 10 knots becoming south. waves
1 foot or less. 
.saturday...south winds 5 to 15 knots becoming east less than
10 knots. waves 2 feet or less. 
.saturday night...east winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.sunday...southwest winds 10 knots or less. a chance of showers
and thunderstorms sunday night. waves 1 foot or less. 
.monday...southwest winds 5 to 10 knots becoming south. a chance
of showers and thunderstorms during the day, then showers likely
with a chance of thunderstorms monday night. waves 1 foot or
less. 
.tuesday...south winds 5 to 15 knots becoming north. showers
likely with a chance of thunderstorms. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$