fzus61 kbuf 042002
glfsl 
expires:202607050300;;414525

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 pm edt sat jul 4 2026


slz022-024-050300-
saint lawrence river from cape vincent to saint regis
402 pm edt sat jul 4 2026

.tonight...northwest winds less than 10 knots. partly cloudy. 
.sunday...north winds less than 10 knots becoming northeast.
mostly sunny. 
.sunday night...northeast winds less than 10 knots. partly to
mostly cloudy. 
.monday...northeast winds less than 10 knots becoming east. a
chance of showers in the afternoon. 
.monday night...east winds less than 10 knots. partly to mostly
cloudy. 
.tuesday...east winds less than 10 knots. partly cloudy. 
.wednesday...southwest winds 10 knots or less. mainly clear, then
becoming partly cloudy. 
.thursday...southwest winds 10 knots or less becoming west. a
chance of showers and thunderstorms during the day, then showers
likely with a chance of thunderstorms thursday night. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 042001
glflo 
expires:202607050300;;414444

open lake forecast for lake ontario
national weather service buffalo ny
401 pm edt sat jul 4 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 weak frontal boundary will settle south across the 
lake this afternoon into this evening. meanwhile, a 30.2 inch high 
will build from hudson bay to quebec and northern new england by 
sunday night. a weak 29.9 inch low will then develop over ohio late 
sunday and move to the mid atlantic by late monday. a broad 30.1 
inch high is then forecast to build into the great lakes tuesday 
through wednesday. a cold frontal boundary will slide southeast 
across the lake thursday.


loz063>065-050300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
401 pm edt sat jul 4 2026

.tonight...northwest winds less than 10 knots. waves 1 foot or
less. 
.sunday...northeast winds 5 to 10 knots. waves 1 foot or less. 
.sunday night...northeast winds 5 to 10 knots becoming east. a
chance of showers overnight. waves 2 feet or less. 
.monday...east winds 5 to 15 knots. a chance of showers. waves
2 feet or less. 
.monday night...east winds 5 to 15 knots. a chance of showers.
waves 2 feet or less. 
.tuesday...east winds 10 knots or less becoming southwest. a
chance of showers during the day. waves 1 foot or less. 
.wednesday...southwest winds 5 to 10 knots. waves 1 foot or less.
.thursday...southwest winds 5 to 10 knots becoming west. a chance
of showers. waves 1 foot or less. 

$$