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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
410 am edt fri apr 10 2026


slz022-024-101500-
saint lawrence river from cape vincent to saint regis
410 am edt fri apr 10 2026

.today...northwest winds 10 knots or less becoming north.
showers.
.tonight...northwest winds 10 knots or less. a chance of rain
showers in the evening. 
.saturday...northwest winds 5 to 10 knots. mostly sunny. 
.saturday night...west winds 5 to 10 knots becoming light and
variable. mainly clear. 
.sunday...south winds 5 to 15 knots increasing to 15 to 20 knots.
rain showers. 
.monday...southwest winds 15 to 20 knots becoming west 5 to
15 knots. showers during the day, then a chance of showers monday
night. 
.tuesday...northeast winds 5 to 10 knots becoming southeast.
showers likely. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
409 am edt fri apr 10 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 front will stall just south of the lake today before 
moving off the new england coast saturday. a 30.5 inch high will 
then build into the central great lakes saturday, then drift east to 
new england by sunday. a 29.4 inch low will then move from near lake 
superior sunday night to northern quebec monday, with a trailing 
cold front stalling north of the lake monday through tuesday.


loz062-101500-
lake ontario open waters from the niagara river to hamlin beach-
409 am edt fri apr 10 2026

.today...north winds 5 to 15 knots. rain showers. waves 1 to
2 feet. 
.tonight...northwest winds 5 to 15 knots. a chance of rain
showers early. waves 1 to 2 feet. 
.saturday...northwest winds 5 to 10 knots becoming southwest.
waves 2 feet or less. 
.saturday night...southwest winds 10 knots or less becoming
southeast. waves 1 foot or less. 
.sunday...southeast winds 5 to 15 knots becoming southwest and
increasing to 15 to 25 knots. rain showers likely. waves 1 to
3 feet building to 3 to 6 feet. 
.monday...southwest winds 15 to 25 knots diminishing to 10 to
15 knots. a chance of showers. waves 4 to 7 feet subsiding to
2 to 4 feet. waves occasionally around 9 feet. 
.tuesday...south winds 15 to 20 knots. showers likely. waves 2 to
4 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
409 am edt fri apr 10 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 front will stall just south of the lake today before 
moving off the new england coast saturday. a 30.5 inch high will 
then build into the central great lakes saturday, then drift east to 
new england by sunday. a 29.4 inch low will then move from near lake 
superior sunday night to northern quebec monday, with a trailing 
cold front stalling north of the lake monday through tuesday.


loz063>065-101500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
409 am edt fri apr 10 2026

.today...north winds 5 to 15 knots. a chance of rain showers
early. rain showers this afternoon. waves 2 feet or less. 
.tonight...northwest winds 5 to 15 knots. rain showers likely
early, then a chance of rain showers late in the evening. waves
2 feet or less. 
.saturday...northwest winds 10 to 15 knots becoming west. waves
1 to 3 feet. 
.saturday night...west winds 10 knots or less becoming southeast.
waves 2 feet or less. 
.sunday...southeast winds 5 to 15 knots becoming south and
increasing to 15 to 25 knots. rain showers likely. waves 2 feet
or less building to 4 to 7 feet. waves occasionally around
9 feet. 
.monday...southwest winds 15 to 25 knots becoming west and
diminishing to 10 to 15 knots. showers likely during the day,
then a chance of showers monday night. waves 4 to 7 feet
subsiding to 3 to 5 feet. waves occasionally around 9 feet. 
.tuesday...southeast winds 10 to 15 knots becoming south 15 to
20 knots. showers likely. waves 1 to 3 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
342 am edt fri apr 10 2026

for waters beyond five nautical miles of shore on lake erie

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 cold front will move southeast across lake erie today and exit
to the southeast by tonight. high pressure 30.60 inches will build
over the great lakes saturday before exiting east on sunday. a 
warm front will lift northeast across the lake sunday and stall to
the north of lake erie monday through the middle of the week.


lez061-168-169-101415-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
342 am edt fri apr 10 2026

.today...southeast winds 5 to 10 knots becoming west. a slight
chance of showers late this morning. showers this afternoon.
waves 1 to 2 feet. 
.tonight...northwest winds 10 knots or less becoming north. a
chance of rain showers early, then a slight chance of rain
showers late in the evening. waves 1 to 2 feet. 
.saturday...north winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.saturday night...light and variable winds. waves 1 foot or less.
.sunday...southeast winds 5 to 10 knots becoming southwest and
increasing to 15 to 20 knots. a chance of rain showers. waves
1 foot or less building to 3 to 5 feet. 
.monday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers. waves 3 to 6 feet subsiding to
2 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots becoming south. a
chance of showers during the day, then showers likely tuesday
night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$