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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt wed oct 14 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 will build from the upper midwest today 
to the upper great lakes tonight, then move east across quebec and 
new england thursday through thursday night. a 29.6 inch low will 
then move to southern lower michigan thursday night before passing 
over or just north of the lake friday. this low will deepen to 29.1 
inches as it moves from the saint lawrence valley friday night to 
the canadian maritimes saturday. a strong 30.6 inch high is then 
forecast to build from the ohio valley saturday night to the mid 
atlantic and southern new england by sunday night.


loz063>065-141500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt wed oct 14 2026

.today...west winds 10 to 15 knots increasing to 15 to 20 knots.
waves 2 to 4 feet building to 3 to 5 feet. 
.tonight...northwest winds 15 to 20 knots becoming north. waves
3 to 5 feet subsiding to 2 to 4 feet. 
.thursday...northeast winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.thursday night...east winds 10 to 15 knots becoming southeast
15 to 20 knots. showers. waves 1 to 3 feet building to 2 to
4 feet. 
.friday...south winds 15 to 25 knots becoming northwest to
30 knots. showers. waves 3 to 6 feet building to 8 to 11 feet.
waves occasionally around 14 feet. 
.saturday...northwest winds to 30 knots becoming west 15 to
25 knots. a chance of rain showers during the day. waves 6 to
10 feet subsiding to 5 to 8 feet. waves occasionally around
13 feet. 
.sunday...west winds 15 to 20 knots becoming southwest. waves
3 to 6 feet subsiding to 2 to 4 feet. 

$$

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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 14 2026


slz022-024-141500-
saint lawrence river from cape vincent to saint regis
403 am edt wed oct 14 2026

.today...west winds 10 knots or less. a chance of showers late
this morning. 
.tonight...northwest winds 5 to 10 knots becoming north. mostly
cloudy through the early overnight, then becoming partly cloudy. 
.thursday...north winds 10 knots or less becoming northeast.
mostly sunny. 
.thursday night...northeast winds 10 knots or less becoming east.
rain showers overnight. 
.friday...east winds 5 to 15 knots becoming northwest 15 to
20 knots. rain showers. 
.saturday...northwest winds 15 to 20 knots becoming southwest and
diminishing to less than 10 knots. partly cloudy. 
.sunday...southwest winds 5 to 15 knots. becoming mainly clear. 

$$