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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 am edt wed jun 24 2026


slz022-024-242100-
saint lawrence river from cape vincent to saint regis
1003 am edt wed jun 24 2026

.this afternoon...west winds 5 to 10 knots. sunny.
.tonight...southwest winds 10 knots or less. mostly cloudy. 
.thursday...southwest winds less than 10 knots becoming south. a
chance of showers. 
.thursday night...southeast winds less than 10 knots becoming
south. showers.
.friday...southwest winds less than 10 knots. showers with a
chance of thunderstorms. 
.saturday...light and variable winds. partly cloudy. 
.sunday...light and variable winds. mainly clear, then becoming
partly cloudy. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt wed jun 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 michigan will slide east across 
the ohio valley this afternoon, before drifting to the eastern 
seaboard tonight and thursday. a weak 29.9 inch low is forecast to 
move from the central great lakes thursday to southern quebec 
friday, then the canadian maritimes saturday. a 30.0 inch high will 
then build across the lower great lakes this weekend.


loz063>065-242100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt wed jun 24 2026

.this afternoon...west winds 5 to 15 knots. waves 2 feet or less. 
.tonight...west winds 5 to 15 knots becoming south less than
10 knots. waves 2 feet or less. 
.thursday...south winds 10 knots or less becoming east. showers
likely in the morning, then showers with a chance of
thunderstorms in the afternoon. waves 1 foot or less. 
.thursday night...east winds 5 to 10 knots becoming southwest.
showers with a chance of thunderstorms in the evening, then
showers overnight. waves 1 foot or less. 
.friday...west winds 10 knots or less becoming northwest. a
chance of showers during the day. waves 2 feet or less. 
.saturday...north winds 10 knots or less becoming west. waves
1 foot or less. 
.sunday...northwest winds less than 10 knots. waves 1 foot or
less. 

winds and waves higher in and near thunderstorms.

$$