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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 am edt wed oct 7 2026


slz022-024-071500-
saint lawrence river from cape vincent to saint regis
403 am edt wed oct 7 2026

.today...south winds 10 to 15 knots becoming southwest. a chance
of showers this afternoon. 
.tonight...southwest winds 5 to 15 knots. showers likely in the
evening, then a chance of showers after midnight. 
.thursday...southwest winds 5 to 15 knots becoming west. a chance
of showers. 
.thursday night...west winds 5 to 10 knots. a chance of rain
showers in the evening. 
.friday...west winds 10 knots or less becoming southwest. partly
cloudy. 
.saturday...south winds 10 knots or less. becoming mainly clear. 
.sunday...south winds 5 to 10 knots becoming southwest. a chance
of showers sunday night. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt wed oct 7 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 30.2 inch high over the mid-alantic region will slide 
out to sea today. a cold front will pass across the lake tonight 
into thursday. a 30.1 inch surface high will then ridge north across 
the lake friday, drifting off the coast over the weekend.


loz062-071500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt wed oct 7 2026

.today...southwest winds 15 to 25 knots. a chance of showers this
afternoon. waves 3 to 6 feet. 
.tonight...southwest winds 15 to 20 knots becoming west 10 to
15 knots. a chance of showers. waves 3 to 5 feet subsiding to
1 to 3 feet. 
.thursday...west winds 15 to 20 knots. waves 2 to 4 feet building
to 3 to 5 feet. 
.thursday night...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet. 
.friday...west winds 5 to 15 knots becoming southwest. waves 1 to
3 feet subsiding to 1 foot or less. 
.saturday...south winds 5 to 15 knots. waves 2 feet or less. 
.sunday...south winds 5 to 10 knots becoming southeast. a chance
of showers. waves 2 feet or less. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt wed oct 7 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 30.2 inch high over the mid-alantic region will slide 
out to sea today. a cold front will pass across the lake tonight 
into thursday. a 30.1 inch surface high will then ridge north across 
the lake friday, drifting off the coast over the weekend.


loz063>065-071500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt wed oct 7 2026

.today...south winds 15 to 25 knots becoming southwest. a chance
of showers this afternoon. waves 3 to 5 feet subsiding to 2 to
4 feet. 
.tonight...southwest winds 15 to 20 knots becoming west 10 to
15 knots. showers likely through the early overnight, then a
chance of showers late. waves 2 to 4 feet. 
.thursday...west winds 15 to 20 knots. a chance of showers. waves
2 to 4 feet building to 3 to 6 feet. 
.thursday night...west winds 15 to 20 knots. a chance of showers.
waves 3 to 6 feet. 
.friday...west winds 15 to 20 knots becoming southwest 5 to
15 knots. waves 3 to 5 feet subsiding to 1 to 2 feet. 
.saturday...south winds 5 to 10 knots increasing to 15 to
20 knots. waves 1 to 3 feet. 
.sunday...south winds 15 to 20 knots becoming southeast 10 to
15 knots. a chance of showers during the day, then showers likely
sunday night. waves 1 to 3 feet. 

$$