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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 pm edt sat jun 6 2026


slz022-024-070900-
saint lawrence river from cape vincent to saint regis
1003 pm edt sat jun 6 2026

.rest of tonight...west winds 10 to 15 knots. showers likely late
this evening, then a chance of showers after midnight. 
.sunday...northwest winds 5 to 15 knots becoming north. a chance
of showers in the morning. 
.sunday night...north winds less than 10 knots. partly cloudy. 
.monday...east winds less than 10 knots. sunny.
.monday night...light and variable winds. clear.
.tuesday...south winds less than 10 knots. mainly clear, then
becoming partly cloudy. 
.wednesday...south winds 10 knots or less. showers likely with a
chance of thunderstorms. 
.thursday...southwest winds 10 knots or less. a chance of
showers. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt sat jun 6 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 over the saint lawrence valley will 
slide out across new england and out to sea overnight and 
sunday...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.


loz062-070900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt sat jun 6 2026

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

$$

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glflo 
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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt sat jun 6 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 over the saint lawrence valley will 
slide out across new england and out to sea overnight and 
sunday...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>065-070900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt sat jun 6 2026

.overnight...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.sunday...west winds 5 to 15 knots. waves 1 to 3 feet. 
.sunday night...northwest winds 10 knots or less becoming
northeast. waves 2 feet or less. 
.monday...east winds 5 to 10 knots becoming northeast. waves
1 foot or less. 
.monday night...northeast winds 10 knots or less becoming
southeast. waves 1 foot or less. 
.tuesday...southeast winds 10 knots or less becoming south. a
chance of showers tuesday night. waves 1 foot or less. 
.wednesday...south winds 5 to 10 knots becoming southwest.
showers likely with a chance of thunderstorms. waves 1 foot or
less. 
.thursday...southwest winds 5 to 10 knots. a chance of showers.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$