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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 am edt tue oct 20 2026


slz022-024-201500-
saint lawrence river from cape vincent to saint regis
403 am edt tue oct 20 2026

.today...north winds 5 to 10 knots. sunny.
.tonight...north winds less than 10 knots becoming northeast.
clear.
.wednesday...northeast winds less than 10 knots. sunny.
.wednesday night...light and variable winds. mainly clear. 
.thursday...northwest winds 10 knots or less becoming north.
becoming mainly clear. 
.friday...north winds 5 to 10 knots becoming light and variable.
mainly clear. 
.saturday...light and variable winds. mainly clear. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt tue oct 20 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...30.4 inch high pressure will maintain influence over the 
lower great lakes this week. the high may briefly weaken to 30.2 
inches wednesday and thursday.


loz062-201500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt tue oct 20 2026

.today...northeast winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tonight...northeast winds 5 to 10 knots becoming east. waves
1 to 2 feet. 
.wednesday...east winds 10 knots or less becoming northeast.
waves 1 to 2 feet. 
.wednesday night...light and variable winds becoming northwest
5 to 10 knots. waves 1 foot or less. 
.thursday...northwest winds 5 to 10 knots becoming northeast and
increasing to 15 to 20 knots. waves 1 foot or less building to
2 to 4 feet. 
.friday...northeast winds 5 to 15 knots becoming east. waves 1 to
3 feet subsiding to 1 foot or less. 
.saturday...southeast winds 10 knots or less becoming south.
waves 1 foot or less. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt tue oct 20 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...30.4 inch high pressure will maintain influence over the 
lower great lakes this week. the high may briefly weaken to 30.2 
inches wednesday and thursday.


loz063>065-201500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt tue oct 20 2026

.today...northeast winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet building to 3 to 5 feet, then
subsiding to 2 to 4 feet. 
.tonight...northeast winds 5 to 15 knots. waves 1 to 3 feet. 
.wednesday...east winds 5 to 10 knots becoming light and
variable. waves 2 feet or less. 
.wednesday night...light and variable winds becoming northwest
5 to 10 knots. waves 1 foot or less. 
.thursday...north winds 5 to 15 knots becoming northeast and
increasing to 15 to 25 knots. waves 2 feet or less building to
3 to 5 feet. 
.friday...northeast winds 15 to 20 knots becoming southeast and
diminishing to 5 to 10 knots. waves 3 to 5 feet subsiding to
1 foot or less. 
.saturday...south winds 10 knots or less. waves 1 foot or less. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
340 am edt tue oct 20 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... 
high pressure 30.40 inches remains in control this week. the high
will briefly weaken to 30.20 inches wednesday and thursday.


lez061-169-201415-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
340 am edt tue oct 20 2026

.today...northeast winds 5 to 15 knots. waves 1 to 3 feet. 
.tonight...northeast winds 15 to 20 knots becoming east 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.wednesday...east winds 10 knots or less becoming northeast.
waves 1 to 3 feet subsiding to 1 foot or less. 
.wednesday night...northeast winds less than 10 knots. waves
1 foot or less. 
.thursday...north winds 5 to 10 knots becoming northeast and
increasing to 15 to 20 knots. waves 1 to 3 feet. 
.friday...northeast winds 5 to 15 knots becoming southeast. waves
1 to 3 feet subsiding to 1 foot or less. 
.saturday...southeast winds 10 knots or less becoming south.
waves 2 feet or less. 

$$