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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 am edt sun jun 7 2026


slz022-024-071500-
saint lawrence river from cape vincent to saint regis
402 am edt sun jun 7 2026

.today...northwest winds 5 to 10 knots becoming north. showers
likely this morning. 
.tonight...north winds less than 10 knots. partly cloudy. 
.monday...light and variable winds. sunny.
.monday night...light and variable winds. clear.
.tuesday...south winds less than 10 knots. a chance of showers
and thunderstorms tuesday night. 
.wednesday...south winds 10 knots or less becoming southwest.
showers with a chance of thunderstorms. 
.thursday...southwest winds 10 knots or less. 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
402 am edt sun jun 7 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 29.6 inch low across new england will head out to sea 
today, while a 30.2 inch high over ontario builds across quebec. the 
high will settle southeast to the new england coast monday, then 
offshore tuesday, where it will then remain anchored through 
thursday.


loz063>065-071500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt sun jun 7 2026

.today...northwest winds 10 to 15 knots becoming west. waves 1 to
3 feet. 
.tonight...northwest winds 10 knots or less becoming northeast.
waves 2 feet or less. 
.monday...east winds 10 knots or less becoming northeast. waves
1 foot or less. 
.monday night...northeast winds 5 to 10 knots becoming southeast.
waves 1 foot or less. 
.tuesday...south winds 10 knots or less. showers likely with a
chance of thunderstorms tuesday night. waves 1 foot or less. 
.wednesday...south winds 5 to 10 knots becoming southwest.
showers likely with a chance of thunderstorms during the day,
then a chance of showers and thunderstorms wednesday night. waves
1 foot or less. 
.thursday...southwest winds 5 to 10 knots. a chance of showers
and thunderstorms during the day, then a chance of showers
thursday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$