fzus61 kbuf 242003
glfsl 
expires:202608250300;;296329

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 pm edt mon aug 24 2026


slz022-024-250300-
saint lawrence river from cape vincent to saint regis
403 pm edt mon aug 24 2026

.tonight...southwest winds 5 to 15 knots becoming west less than
10 knots. showers likely with a chance of thunderstorms early,
then showers likely late this evening. a chance of showers after
midnight. 
.tuesday...west winds less than 10 knots. a chance of showers in
the afternoon. 
.tuesday night...west winds less than 10 knots. partly to mostly
cloudy. 
.wednesday...light and variable winds becoming southwest 5 to
10 knots. mostly sunny. 
.wednesday night...south winds 10 knots or less. partly cloudy. 
.thursday...south winds 5 to 15 knots becoming southwest less
than 10 knots. showers likely with a chance of thunderstorms. 
.friday...west winds 10 knots or less becoming northwest. a
chance of showers during the day. 
.saturday...light and variable winds. partly cloudy. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 242002
glflo 
expires:202608250300;;296288

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt mon aug 24 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 ridge averaging 30.1 inches will build from the 
western and central great lakes tuesday through wednesday. the ridge 
will exit eastward thursday and allow a warm front to sweep 
northeastward across lake ontario. friday, a cold front should sweep 
eastward across the lake and be followed by a high pressure ridge 
averaging 30.0 inches and building from the upper midwest.


loz063>065-250300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt mon aug 24 2026

.tonight...southwest winds 15 to 20 knots becoming northwest. a
chance of waterspouts through the early overnight. showers with a
chance of thunderstorms this evening, then showers likely after
midnight. waves 3 to 6 feet. 
.tuesday...northwest winds 15 to 20 knots becoming west 10 to
15 knots. a chance of showers in the morning. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.tuesday night...west winds 5 to 15 knots. waves 1 to 3 feet
subsiding to 1 foot or less. 
.wednesday...southwest winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.wednesday night...southeast winds 5 to 15 knots becoming south
15 to 20 knots. waves 1 to 3 feet. 
.thursday...south winds 15 to 20 knots becoming west 5 to
15 knots. showers likely with a chance of thunderstorms. waves
1 to 3 feet. 
.friday...northwest winds 5 to 10 knots becoming north. waves
2 feet or less. 
.saturday...north winds 10 knots or less becoming south. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$