fzus61 kbuf 192003
glflo 
expires:202610200300;;847698

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt mon oct 19 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>065-200300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt mon oct 19 2026

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

$$

fzus61 kbuf 192003
glfsl 
expires:202610200300;;847754

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 pm edt mon oct 19 2026


slz022-024-200300-
saint lawrence river from cape vincent to saint regis
403 pm edt mon oct 19 2026

.tonight...southwest winds 10 knots or less becoming north.
mainly clear through the early overnight, then becoming partly
cloudy. 
.tuesday...north winds 5 to 10 knots. sunny.
.tuesday night...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...west winds 10 knots or less becoming north. becoming
mainly clear. 
.friday...north winds less than 10 knots. mainly clear. 
.saturday...light and variable winds. mainly clear. 

$$