fzus61 kbuf 192003
glfsl 
expires:202606200300;;032514

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


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

.tonight...west winds 15 to 20 knots diminishing to 5 to
15 knots. showers likely with a chance of thunderstorms this
evening, then a chance of showers after midnight. 
.saturday...west winds 5 to 10 knots. a chance of showers late in
the morning. a chance of showers and thunderstorms early in the
afternoon, then showers likely with a chance of thunderstorms
late. 
.saturday night...west winds 5 to 10 knots becoming light and
variable. a chance of showers and thunderstorms in the evening,
then a chance of showers overnight. 
.sunday...southwest winds 10 knots or less becoming west. a
chance of showers in the morning, then showers likely with a
chance of thunderstorms in the afternoon. 
.sunday night...southwest winds less than 10 knots. showers
likely with a chance of thunderstorms in the evening. 
.monday...south winds less than 10 knots becoming northwest.
showers likely. 
.tuesday...northwest winds less than 10 knots. partly cloudy. 
.wednesday...west winds less than 10 knots. partly cloudy. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 192002
glflo 
expires:202606200300;;032489

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt fri jun 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...an unseasonably strong 29.2 inch low will linger over 
the canadian maritimes through saturday evening before exiting 
eastward over the atlantic. a weak ridge of high pressure averaging 
29.9 inches will then build over the great lakes saturday night 
through sunday. a 29.7 inch low is then forecast to move south of 
the lower great lakes monday and monday night, before moving off the 
new england coast by tuesday. a broad area of high pressure 
averaging 30.1 inches will advance over the eastern great lakes 
region wednesday and thursday of next week.


loz063>065-200300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt fri jun 19 2026

.tonight...west winds 15 to 25 knots. waves 4 to 7 feet. waves
occasionally around 9 feet. 
.saturday...west winds 15 to 20 knots. waves 3 to 6 feet. 
.saturday night...west winds 5 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.sunday...west winds 5 to 10 knots. waves 1 foot or less. 
.sunday night...west winds 10 knots or less becoming south. a
chance of showers overnight. waves 1 foot or less. 
.monday...southeast winds 5 to 15 knots becoming northwest.
showers likely. waves 2 feet or less. 
.tuesday...northwest winds 5 to 15 knots becoming west. waves
1 to 3 feet. 
.wednesday...west winds 10 knots or less becoming south. a chance
of showers wednesday night. waves 1 foot or less. 

$$