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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 pm edt fri jul 10 2026


slz022-024-110900-
saint lawrence river from cape vincent to saint regis
1003 pm edt fri jul 10 2026

.overnight...light and variable winds. partly cloudy. 
.saturday...northeast winds less than 10 knots becoming north.
sunny.
.saturday night...north winds less than 10 knots. clear.
.sunday...light and variable winds. sunny.
.sunday night...southwest winds less than 10 knots. mainly clear.
.monday...southwest winds 5 to 10 knots. mainly clear, then
becoming partly cloudy. 
.tuesday...southwest winds 10 to 15 knots becoming west. partly
cloudy. 
.wednesday...west winds 10 knots or less. partly cloudy. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt fri jul 10 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 high pressure ridge averaging 30.2 inches builds from 
northern ontario and vicinity through this weekend. on monday 
through tuesday, the ridge should begin to exit southeastward from 
the lake ontario region and allow a warm front to sweep 
northeastward across the lake on tuesday. on wednesday, a cold front 
should drift southward across lake ontario.


loz063>065-110900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt fri jul 10 2026

.overnight...north winds 10 knots or less becoming
northeast. waves 1 foot or less. 
.saturday...northeast winds 5 to 10 knots. waves 2 feet or less. 
.saturday night...north winds 5 to 10 knots becoming light and
variable. waves 1 foot or less. 
.sunday...light and variable winds becoming northwest 5 to
10 knots. waves 1 foot or less. 
.sunday night...southwest winds 10 knots or less becoming south.
waves 1 foot or less. 
.monday...southwest winds 10 to 15 knots. waves 2 feet or less. 
.tuesday...west winds 15 to 25 knots. waves 1 to 3 feet building
to 3 to 6 feet. 
.wednesday...west winds 15 to 20 knots becoming northwest and
diminishing to 5 to 10 knots. waves 3 to 5 feet subsiding to 1 to
3 feet. 

$$