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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt sun jun 15 2025

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 30.3 inch high will build from quebec to the canadian 
maritimes this afternoon. a frontal boundary will remain stalled 
south of the lower great lakes through monday as a weak 29.9 inch 
low moves from the ohio valley to the mid atlantic. another 29.6 
inch low will then push northeast across the upper great lakes 
tuesday, followed by a 29.5 inch low forecast to track across the 
central great lakes and quebec wednesday through thursday.


loz063>065-152100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt sun jun 15 2025

.this afternoon...northeast winds 5 to 10 knots. waves 1 foot or
less. 
.tonight...northeast winds 10 knots or less becoming east. waves
1 foot or less. 
.monday...southeast winds less than 10 knots becoming east. waves
1 foot or less. 
.monday night...southeast winds 10 knots or less becoming south.
waves 1 foot or less. 
.tuesday...southeast winds 5 to 15 knots becoming south. a chance
of showers. waves 2 feet or less. 
.wednesday...southwest winds 5 to 10 knots. a chance of showers
and thunderstorms during the day, then showers likely with a
chance of thunderstorms wednesday night. waves 1 to 3 feet. 
.thursday...southwest winds 10 to 15 knots becoming west. showers
likely with a chance of thunderstorms. waves 2 to 4 feet building
to 4 to 7 feet, then subsiding to 3 to 6 feet. waves occasionally
around 9 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
1002 am edt sun jun 15 2025


slz022-024-152100-
saint lawrence river from cape vincent to saint regis
1002 am edt sun jun 15 2025

.this afternoon...northeast winds 10 knots or less. sunny.
.tonight...light and variable winds. mainly clear through the
early overnight, then becoming partly cloudy. 
.monday...light and variable winds. mostly sunny. 
.monday night...southwest winds less than 10 knots. partly to
mostly cloudy. 
.tuesday...south winds 5 to 10 knots. a chance of showers. 
.wednesday...southwest winds 10 knots or less. a chance of
showers and thunderstorms during the day, then showers likely
with a chance of thunderstorms wednesday night. 
.thursday...southwest winds 10 knots or less becoming northwest.
showers likely with a chance of thunderstorms. 

winds and waves higher in and near thunderstorms.

$$