fzus61 kbuf 092003
glfsl 
expires:202609100300;;650392

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 pm edt wed sep 9 2026


slz022-024-100300-
saint lawrence river from cape vincent to saint regis
403 pm edt wed sep 9 2026

.tonight...south winds 10 to 15 knots becoming southwest. showers
this evening, then a chance of showers after midnight. 
.thursday...west winds 10 to 15 knots. mostly sunny. 
.thursday night...northwest winds 5 to 10 knots becoming light
and variable. partly cloudy in the evening, then becoming mainly
clear. 
.friday...light and variable winds becoming west 5 to 10 knots.
sunny.
.friday night...southwest winds less than 10 knots becoming
south. clear.
.saturday...south winds 5 to 15 knots. mainly clear, then
becoming partly cloudy. 
.sunday...southwest winds 10 knots or less becoming west. a
chance of showers. 
.monday...northwest winds 10 knots or less becoming southeast.
partly to mostly cloudy. 

$$

fzus61 kbuf 092002
glflo 
expires:202609100300;;650333

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt wed sep 9 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 cold front will cross the lake while averaging 29.8 
inches tonight. behind the cold front, another ridge averaging 30.0 
inches will build from the western great lakes through friday and 
then exit toward new england on saturday. a warm front should sweep 
northeastward across lake ontario saturday night and be followed by 
a cold front sweeping eastward across the lake later on sunday. a 
30.1 inch ridge will then slide east across the lake monday.


loz063>065-100300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt wed sep 9 2026

.tonight...southwest winds 15 to 20 knots becoming west. showers
with a chance of thunderstorms early, then showers likely late
this evening. a chance of showers after midnight. waves 2 to
4 feet building to 3 to 5 feet. 
.thursday...west winds 15 to 20 knots. waves 3 to 6 feet. 
.thursday night...northwest winds 15 to 20 knots diminishing to
5 to 15 knots. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.friday...northwest winds 10 knots or less becoming west. waves
2 feet or less. 
.friday night...west winds 5 to 10 knots becoming south. waves
1 foot or less. 
.saturday...south winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet. 
.sunday...southwest winds 10 to 15 knots becoming northwest.
waves 1 to 3 feet. 
.monday...north winds 5 to 10 knots becoming south and increasing
to 15 to 20 knots. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$