fzus61 kbuf 042003
glflo 
expires:202608050300;;623167

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt tue aug 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 high pressure ridge averaging 30.0 inches exits slowly 
toward new england through this weekend. a cold front should 
approach lake ontario slowly from the northwest thursday through 
this weekend.


loz063>065-050300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 pm edt tue aug 4 2026

.tonight...east winds 5 to 15 knots becoming south. waves 1 foot
or less. 
.wednesday...south winds 5 to 15 knots becoming east. waves
2 feet or less. 
.wednesday night...east winds 5 to 10 knots becoming south. a
chance of showers overnight. waves 1 foot or less. 
.thursday...south winds 5 to 10 knots becoming southwest. a
chance of showers in the morning, then a chance of showers and
thunderstorms in the afternoon. waves 1 foot or less. 
.thursday night...south winds less than 10 knots becoming
southwest. a chance of showers and thunderstorms in the evening.
waves 1 foot or less. 
.friday...west winds 10 knots or less becoming southwest. a
chance of showers and thunderstorms during the day, then showers
likely with a chance of thunderstorms friday night. waves 1 foot
or less. 
.saturday...southwest winds 5 to 15 knots. showers likely with a
chance of thunderstorms during the day, then a chance of showers
saturday night. waves 1 foot or less. 
.sunday...west winds 5 to 15 knots becoming southwest. a chance
of showers. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 042003
glfsl 
expires:202608050300;;623218

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 pm edt tue aug 4 2026


slz022-024-050300-
saint lawrence river from cape vincent to saint regis
403 pm edt tue aug 4 2026

.tonight...southwest winds 10 knots or less becoming south.
mainly clear. 
.wednesday...south winds 10 knots or less becoming southwest.
sunny.
.wednesday night...southwest winds less than 10 knots. a chance
of showers overnight. 
.thursday...south winds 10 knots or less becoming southwest. a
chance of showers in the morning, then a chance of showers and
thunderstorms in the afternoon. 
.thursday night...southwest winds less than 10 knots. a chance of
showers and thunderstorms in the evening. 
.friday...light and variable winds. a chance of showers and
thunderstorms during the day, then showers likely with a chance
of thunderstorms friday night. 
.saturday...southwest winds 10 knots or less. showers likely with
a chance of thunderstorms during the day, then a chance of
showers and thunderstorms saturday night. 
.sunday...southwest winds 5 to 10 knots. a chance of showers. 

winds and waves higher in and near thunderstorms.

$$