fzus61 kbuf 032003
glfsl 
expires:202607040300;;355448

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 pm edt fri jul 3 2026


slz022-024-040300-
saint lawrence river from cape vincent to saint regis
403 pm edt fri jul 3 2026

.tonight...southwest winds 10 knots or less becoming west. a
chance of showers early. 
.saturday...northwest winds less than 10 knots. mostly sunny. 
.saturday night...northwest winds less than 10 knots. partly
cloudy. 
.sunday...north winds less than 10 knots becoming northeast.
partly to mostly sunny. 
.sunday night...northeast winds less than 10 knots becoming east.
mostly cloudy. 
.monday...east winds less than 10 knots. a chance of showers. 
.tuesday...east winds less than 10 knots. a chance of showers. 
.wednesday...southwest winds 10 knots or less. partly cloudy. 

$$

fzus61 kbuf 032002
glflo 
expires:202607040300;;355421

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt fri jul 3 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 30.1 inch high will remain in place today from the 
upper ohio valley to the mid atlantic. a weak cold front will settle 
south across the lake this evening, followed by another weak cold 
front saturday evening. a 30.2 inch high will then build from hudson 
bay saturday to quebec and northern new england sunday night. a weak 
29.9 inch low will then develop over the upper ohio valley 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.


loz062-040300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt fri jul 3 2026

.tonight...west winds 5 to 10 knots. a chance of showers early. a
chance of showers after midnight. waves 1 foot or less. 
.saturday...west winds less than 10 knots becoming southwest. a
chance of showers. waves 1 foot or less. 
.saturday night...east winds 10 knots or less. a chance of
showers. waves 1 foot or less. 
.sunday...east winds 5 to 15 knots. a chance of showers. waves
1 to 3 feet. 
.sunday night...east winds 10 to 15 knots. a chance of showers.
waves 1 to 3 feet. 
.monday...east winds 5 to 15 knots. showers likely with a chance
of thunderstorms during the day, then a chance of showers and
thunderstorms monday night. waves 1 to 3 feet. 
.tuesday...northeast winds 10 knots or less becoming west. a
chance of showers during the day. waves 1 foot or less. 
.wednesday...west winds 10 knots or less becoming southwest.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 032002
glflo 
expires:202607040300;;355422

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt fri jul 3 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 30.1 inch high will remain in place today from the 
upper ohio valley to the mid atlantic. a weak cold front will settle 
south across the lake this evening, followed by another weak cold 
front saturday evening. a 30.2 inch high will then build from hudson 
bay saturday to quebec and northern new england sunday night. a weak 
29.9 inch low will then develop over the upper ohio valley 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.


loz063>065-040300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt fri jul 3 2026

.tonight...west winds 5 to 10 knots. a chance of showers early. a
chance of showers late. waves 1 to 2 feet. 
.saturday...west winds 10 knots or less. a chance of showers
through early afternoon. waves 1 foot or less. 
.saturday night...northwest winds 10 knots or less becoming east.
a chance of showers overnight. waves 1 foot or less. 
.sunday...east winds 5 to 10 knots becoming northeast. a chance
of showers. waves 1 foot or less. 
.sunday night...northeast winds 5 to 15 knots becoming east. a
chance of showers. waves 2 feet or less. 
.monday...east winds 5 to 10 knots. showers likely with a chance
of thunderstorms. waves 2 feet or less. 
.tuesday...east winds 10 knots or less becoming southwest. a
chance of showers. waves 1 foot or less. 
.wednesday...southwest winds 5 to 10 knots. waves 1 foot or less.

winds and waves higher in and near thunderstorms.

$$