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open lake forecast for lake ontario
national weather service buffalo ny
402 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>065-281500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt sun jun 28 2026

.today...light and variable winds becoming north 5 to 10 knots.
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.

$$

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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 28 2026


slz022-024-281500-
saint lawrence river from cape vincent to saint regis
402 am edt sun jun 28 2026

.today...light and variable winds. patchy fog early. 
.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.

$$