fzus61 kbuf 272003
glfsl 
expires:202605280300;;750148

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 pm edt wed may 27 2026


slz022-024-280300-
saint lawrence river from cape vincent to saint regis
403 pm edt wed may 27 2026

.tonight...northwest winds 10 knots or less becoming north.
mostly cloudy. 
.thursday...north winds 5 to 10 knots becoming northwest. partly
sunny. 
.thursday night...northwest winds 5 to 10 knots becoming light
and variable. partly to mostly cloudy. 
.friday...light and variable winds becoming southwest 10 to
15 knots. a chance of showers in the afternoon. 
.friday night...west winds 10 to 15 knots becoming northwest. a
chance of showers. 
.saturday...north winds 15 to 20 knots becoming light and
variable. a chance of showers during the day. 
.sunday...west winds less than 10 knots. a chance of showers and
thunderstorms. 
.monday...north winds less than 10 knots. a chance of showers. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 272002
glflo 
expires:202605280300;;750119

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt wed may 27 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 high over ontario will expand southeastward 
across the lower great lakes thursday and thursday night, before 
settling into the ohio valley friday. a 29.6 inch low will then make 
its way southeastward across quebec friday and new england friday 
night and saturday, with its trailing cold front crossing the lake 
late friday or friday night. another 30.2 inch high is then forecast 
to build across the great lakes later saturday through sunday.


loz062-280300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt wed may 27 2026

.tonight...west winds 10 to 15 knots becoming north. waves 1 to
2 feet. 
.thursday...north winds 5 to 10 knots becoming west. a chance of
showers early. waves 1 to 2 feet. 
.thursday night...west winds 5 to 10 knots. waves 1 to 2 feet. 
.friday...west winds 5 to 15 knots increasing to 15 to 20 knots.
a chance of showers in the afternoon. waves 1 to 3 feet building
to 2 to 4 feet. 
.friday night...west winds 15 to 20 knots becoming north 10 to
15 knots. a chance of showers in the evening. waves 2 to 4 feet. 
.saturday...north winds 5 to 15 knots becoming west 10 knots or
less. waves 2 feet or less. 
.sunday...west winds 5 to 10 knots becoming northwest. waves
2 feet or less. 
.monday...north winds 10 knots or less becoming northwest. waves
1 foot or less. 

$$

fzus61 kbuf 272002
glflo 
expires:202605280300;;750120

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt wed may 27 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 high over ontario will expand southeastward 
across the lower great lakes thursday and thursday night, before 
settling into the ohio valley friday. a 29.6 inch low will then make 
its way southeastward across quebec friday and new england friday 
night and saturday, with its trailing cold front crossing the lake 
late friday or friday night. another 30.2 inch high is then forecast 
to build across the great lakes later saturday through sunday.


loz063>065-280300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt wed may 27 2026

.tonight...west winds 5 to 15 knots becoming north. waves 2 feet
or less. 
.thursday...north winds 10 to 15 knots becoming west. a chance of
showers early. waves 1 to 2 feet. 
.thursday night...west winds 5 to 10 knots. waves 2 feet or less.
.friday...west winds 5 to 15 knots increasing to 15 to 20 knots.
a chance of showers in the afternoon. waves 2 feet or less
building to 3 to 5 feet. 
.friday night...west winds 15 to 20 knots becoming northwest. a
chance of showers. waves 3 to 5 feet. 
.saturday...north winds 15 to 20 knots becoming west and
diminishing to 5 to 10 knots. waves 3 to 5 feet subsiding to
2 feet or less. 
.sunday...west winds 5 to 10 knots. waves 2 feet or less. 
.monday...north winds 10 knots or less becoming northwest. waves
1 foot or less. 

$$