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


slz022-024-102100-
saint lawrence river from cape vincent to saint regis
1003 am edt fri jul 10 2026

.this afternoon...north winds less than 10 knots. mostly sunny. 
.tonight...north winds less than 10 knots. 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. mainly clear. 
.monday...southwest winds 5 to 10 knots. mainly clear, then
becoming partly cloudy. 
.tuesday...southwest winds 10 to 15 knots becoming west. a chance
of showers tuesday night. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 am 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 30.0 inch high will build into the upper great lakes 
today, then strengthen to 30.2 inches while building across the 
lower great lakes tonight through the weekend, before expanding east 
into new england monday. the 30.2 inch high will then drift south 
into the mid atlantic tuesday, allowing a warm front to pass across 
the lake.


loz062-102100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt fri jul 10 2026

.this afternoon...northeast winds 10 knots or less becoming east.
waves 1 foot or less. 
.tonight...northeast winds 10 knots or less. waves 1 foot or
less. 
.saturday...northeast winds 10 knots or less becoming east. waves
1 foot or less. 
.saturday night...southeast winds less than 10 knots. waves
1 foot or less. 
.sunday...light and variable winds. waves 1 foot or less. 
.monday...southwest winds 5 to 15 knots. waves 2 feet or less. 
.tuesday...southwest winds 10 to 15 knots becoming west 15 to
20 knots. waves 1 to 3 feet building to 3 to 5 feet. 

$$

fzus61 kbuf 101402
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expires:202607102100;;735826

open lake forecast for lake ontario
national weather service buffalo ny
1002 am 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 30.0 inch high will build into the upper great lakes 
today, then strengthen to 30.2 inches while building across the 
lower great lakes tonight through the weekend, before expanding east 
into new england monday. the 30.2 inch high will then drift south 
into the mid atlantic tuesday, allowing a warm front to pass across 
the lake.


loz063>065-102100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt fri jul 10 2026

.this afternoon...northeast winds 5 to 10 knots becoming
northwest. waves 1 foot or less. 
.tonight...northwest winds 5 to 10 knots becoming northeast.
waves 1 foot or less. 
.saturday...northeast winds 5 to 10 knots becoming north. 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 south 5 to 10 knots.
waves 1 foot or less. 
.monday...southwest winds 5 to 15 knots. waves 2 feet or less. 
.tuesday...southwest winds 10 to 15 knots becoming west 15 to
20 knots. waves 1 to 3 feet building to 3 to 6 feet. 

$$