fzus61 kbuf 052003
glfsl 
expires:202607060300;;472094

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 pm edt sun jul 5 2026


slz022-024-060300-
saint lawrence river from cape vincent to saint regis
403 pm edt sun jul 5 2026

.tonight...northeast winds 10 knots or less. mostly cloudy. 
.monday...northeast winds 5 to 10 knots becoming east. partly
sunny through early afternoon, then becoming mostly cloudy. 
.monday night...east winds less than 10 knots. partly to mostly
cloudy. 
.tuesday...east winds less than 10 knots becoming northeast.
mostly sunny. 
.tuesday night...east winds less than 10 knots. partly cloudy. 
.wednesday...southwest winds less than 10 knots. partly cloudy. 
.thursday...southwest winds 10 knots or less becoming west.
showers likely with a chance of thunderstorms. 
.friday...northwest winds less than 10 knots. showers likely with
a chance of thunderstorms during the day, then a chance of
showers friday night. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 052002
glflo 
expires:202607060300;;472063

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sun jul 5 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 30.2 inch surface will build southward across 
western quebec tonight, reaching northern new england tomorrow, then 
sliding east of the canadian maritimes by tuesday. meanwhile, a weak 
29.9 inch low over ohio this evening will move to the mid atlantic 
by late monday. a broad 30.1 inch high is then forecast to build 
across the great lakes tuesday through wednesday, then drift off the 
east coast thursday. a weak cold front will cross the lake thursday 
night before another 30.1 inch surface high pressure builds across 
the eastern great lakes region friday and saturday.


loz062-060300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt sun jul 5 2026

.tonight...northeast winds 5 to 15 knots. waves 1 to 2 feet. 
.monday...northeast winds 10 to 15 knots becoming east 15 to
20 knots. a chance of showers from late morning on. waves 2 to
3 feet. 
.monday night...east winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 3 feet. 
.tuesday...east winds 10 to 15 knots. waves 1 to 3 feet. 
.tuesday night...east winds 10 knots or less becoming south.
waves 2 feet or less. 
.wednesday...southwest winds 10 knots or less. waves 1 foot or
less. 
.thursday...southwest winds 5 to 15 knots becoming west. a chance
of showers during the day, then showers likely thursday night.
waves 1 to 2 feet. 
.friday...north winds 10 knots or less. a chance of showers.
waves 1 foot or less. 

$$

fzus61 kbuf 052002
glflo 
expires:202607060300;;472064

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sun jul 5 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 30.2 inch surface will build southward across 
western quebec tonight, reaching northern new england tomorrow, then 
sliding east of the canadian maritimes by tuesday. meanwhile, a weak 
29.9 inch low over ohio this evening will move to the mid atlantic 
by late monday. a broad 30.1 inch high is then forecast to build 
across the great lakes tuesday through wednesday, then drift off the 
east coast thursday. a weak cold front will cross the lake thursday 
night before another 30.1 inch surface high pressure builds across 
the eastern great lakes region friday and saturday.


loz063>065-060300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt sun jul 5 2026

.tonight...northeast winds 5 to 15 knots. waves 1 to 3 feet. 
.monday...northeast winds 5 to 15 knots becoming east. a chance
of showers from late morning on. waves 2 feet or less. 
.monday night...east winds 10 to 15 knots. a chance of showers.
waves 1 to 3 feet. 
.tuesday...east winds 5 to 15 knots. a chance of showers in the
morning. waves 2 feet or less. 
.tuesday night...southeast winds 5 to 10 knots becoming south.
waves 1 foot or less. 
.wednesday...south winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.thursday...southwest winds 5 to 10 knots becoming west. a chance
of showers during the day, then showers likely thursday night.
waves 1 foot or less. 
.friday...north winds 5 to 10 knots. showers likely during the
day. waves 1 foot or less. 

$$