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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 am edt mon oct 26 2026


slz022-024-262100-
saint lawrence river from cape vincent to saint regis
1003 am edt mon oct 26 2026

.rest of today...west winds 10 knots or less becoming northwest.
showers likely late this morning, then a chance of showers early
this afternoon. 
.tonight...north winds 5 to 10 knots. becoming mainly clear. 
.tuesday...north winds 5 to 10 knots becoming light and variable.
sunny.
.tuesday night...light and variable winds. mainly clear in the
evening, then becoming partly cloudy. 
.wednesday...light and variable winds becoming south 5 to
10 knots. partly to mostly cloudy. 
.thursday...south winds 5 to 10 knots becoming southwest. showers
likely thursday night. 
.friday...west winds 5 to 10 knots becoming light and variable. a
chance of rain showers during the day. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt mon oct 26 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 high pressure ridge averaging 30.5 inches exits 
southeastward before a cold front sweeps southeastward across the 
lakes today. behind the front, another ridge averaging 30.6 inches 
affects the lake through thursday as the embedded high pressure 
center wobbles southeastward from near manitoba to north atlantic 
waters southeast of the canadian maritimes. the ridge exits eastward 
thursday night as a cold front sweeps eastward across the lake. 
behind the front, another ridge averaging 30.2 inches builds from 
the western great lakes through this friday.


loz063>065-262100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt mon oct 26 2026

.this afternoon...west winds 10 to 15 knots becoming northwest.
waves 1 to 3 feet. 
.tonight...north winds 10 to 15 knots becoming northeast 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.tuesday...northeast winds 5 to 15 knots diminishing to less than
10 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tuesday night...northeast winds 5 to 10 knots becoming
southeast. waves 1 foot or less. 
.wednesday...southeast winds 5 to 15 knots becoming south. waves
1 foot or less building to 1 to 3 feet. 
.thursday...south winds 10 to 15 knots becoming west. a chance of
showers thursday night. waves 1 to 3 feet. 
.friday...west winds 5 to 15 knots becoming north. a chance of
showers during the day. waves 1 to 3 feet subsiding to 1 foot or
less. 

$$