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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 am edt sun jun 28 2026


slz022-024-282100-
saint lawrence river from cape vincent to saint regis
1003 am edt sun jun 28 2026

.this afternoon...light and variable winds. sunny.
.tonight...light and variable winds. mainly clear. 
.monday...light and variable winds. sunny.
.monday night...southwest winds less than 10 knots. mostly
cloudy. 
.tuesday...south winds 5 to 10 knots becoming southwest. a chance
of showers and thunderstorms. 
.wednesday...southwest winds 5 to 10 knots. a chance of showers
and thunderstorms. 
.thursday...southwest winds 10 knots or less. a chance of showers
thursday night. 

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 sun jun 28 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 30.1 inch high draped across ontario and quebec will 
drift east to new england by monday, then offshore by tuesday. 
another broad 30.1 inch high will then build into the ohio valley 
and mid atlantic by wednesday, where it will remain through at least 
thursday.


loz062-282100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt sun jun 28 2026

.this afternoon...northeast winds 5 to 10 knots becoming east.
waves 1 foot or less. 
.tonight...northeast winds 10 knots or less becoming east. waves
1 foot or less. 
.monday...east winds 10 knots or less. waves 1 foot or less. 
.monday night...east winds 10 knots or less becoming southeast. a
chance of showers and thunderstorms overnight. waves 1 foot or
less. 
.tuesday...south winds 5 to 15 knots becoming southwest. a chance
of showers and thunderstorms during the day. waves 1 foot or less
building to 1 to 3 feet. 
.wednesday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.thursday...southwest winds 5 to 15 knots. a chance of showers
thursday night. waves 1 to 2 feet. 

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 sun jun 28 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 30.1 inch high draped across ontario and quebec will 
drift east to new england by monday, then offshore by tuesday. 
another broad 30.1 inch high will then build into the ohio valley 
and mid atlantic by wednesday, where it will remain through at least 
thursday.


loz063>065-282100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt sun jun 28 2026

.this afternoon...northeast winds 10 knots or less becoming north.
waves 1 foot or less. 
.tonight...north winds 5 to 10 knots becoming light and variable.
waves 1 foot or less. 
.monday...light and variable winds. waves 1 foot or less. 
.monday night...east winds 10 knots or less becoming south. a
chance of showers overnight. waves 1 foot or less. 
.tuesday...south winds 5 to 15 knots becoming southwest. a chance
of showers and thunderstorms during the day, then a chance of
showers tuesday night. waves 2 feet or less. 
.wednesday...southwest winds 5 to 15 knots becoming west. waves
1 to 3 feet. 
.thursday...west winds 5 to 15 knots. a chance of showers
thursday night. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$