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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt thu oct 8 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 weak trough averaging 29.7 inches lingers over the 
lake today. tonight through friday, a ridge averaging 30.1 inches 
should affect the lake as the parent high pressure center moves from 
the western great lakes toward the central appalachians. the ridge 
should exit slowly eastward friday night through saturday and allow 
a warm front to drift northward across the lake. on sunday through 
tuesday, a weak trough averaging 29.9 inches should overspread our 
area generally from the west and a cold front should sweep eastward 
across the lake on tuesday. simultaneously, the future remnant low 
of isaias should wobble northeastward from near the lower ohio 
valley to atlantic waters south of nova scotia and weaken to 29.6 
inches during sunday through tuesday.


loz063>065-082100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt thu oct 8 2026

.this afternoon...west winds 15 to 20 knots. a chance of
waterspouts. a chance of showers. waves 3 to 6 feet. 
.tonight...west winds 15 to 20 knots. a chance of waterspouts. a
chance of showers. waves 3 to 6 feet. 
.friday...west winds 15 to 20 knots. a chance of waterspouts in
the morning. a chance of showers in the morning. waves 3 to
5 feet subsiding to 2 to 4 feet. 
.friday night...west winds 5 to 15 knots becoming east less than
10 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.saturday...southeast winds 5 to 10 knots becoming south and
increasing to 15 to 20 knots. waves 1 to 3 feet. 
.sunday...south winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers during the day, then showers likely
sunday night. waves 1 to 3 feet. 
.monday...southwest winds 5 to 10 knots increasing to 15 to
20 knots. a chance of showers during the day, then showers likely
monday night. waves 1 to 3 feet building to 3 to 5 feet. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 am edt thu oct 8 2026


slz022-024-082100-
saint lawrence river from cape vincent to saint regis
1003 am edt thu oct 8 2026

.this afternoon...west winds 10 to 15 knots. a chance of showers
this afternoon. 
.tonight...west winds 5 to 10 knots. partly cloudy. 
.friday...west winds 5 to 10 knots. mostly sunny. 
.friday night...northwest winds 5 to 10 knots becoming light and
variable. mainly clear. 
.saturday...light and variable winds becoming south 10 to
15 knots. mainly clear, then becoming partly cloudy. 
.sunday...southwest winds 5 to 15 knots becoming south. a chance
of showers sunday night. 
.monday...southwest winds 10 knots or less. a chance of showers
during the day, then showers likely monday night. 

$$