fzus61 kbuf 162003
glfsl 
expires:202607170300;;081391

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 pm edt thu jul 16 2026


slz022-024-170300-
saint lawrence river from cape vincent to saint regis
403 pm edt thu jul 16 2026

.tonight...northwest winds 5 to 15 knots. mainly clear. 
.friday...northwest winds 10 knots or less becoming west. sunny.
.friday night...southwest winds 10 knots or less becoming
southeast. a chance of showers overnight. 
.saturday...southeast winds 5 to 15 knots becoming southwest.
patchy smoke in the morning. showers in the morning, then showers
with a chance of thunderstorms in the afternoon. 
.saturday night...southwest winds 5 to 15 knots becoming
northwest. showers with a chance of thunderstorms in the evening,
then showers likely overnight. 
.sunday...northwest winds 5 to 10 knots becoming light and
variable. mainly clear. 
.monday...southwest winds 10 knots or less becoming south 10 to
15 knots. a chance of showers monday night. 
.tuesday...south winds 5 to 15 knots becoming southwest. showers
likely. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 162002
glflo 
expires:202607170300;;081300

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt thu jul 16 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 cold front will move south across the lower great lakes 
tonight. behind the front, a ridge averaging 30.1 inches will build 
southeast through friday before exiting toward southern new england 
friday night. on saturday, a warm front will lift northeast across 
the lower great lakes with a cold front sliding eastward across the 
lake later in the day, as a 29.7 inch low moves eastward across the 
northern great lakes. behind the low and cold front, a 29.9 inch 
ridge will build across lake ontario, slides southeastward across 
the eastern great lakes through monday.


loz063>065-170300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt thu jul 16 2026

.tonight...west winds 15 to 20 knots becoming northeast 10 to
15 knots. patchy smoke early. waves 2 to 4 feet subsiding to 1 to
3 feet. 
.friday...northeast winds 10 knots or less becoming east. waves
2 feet or less. 
.friday night...southeast winds 5 to 15 knots becoming south.
waves 2 feet or less. 
.saturday...south winds 15 to 20 knots becoming southwest. patchy
smoke in the morning. showers likely in the morning, then showers
with thunderstorms likely in the afternoon. waves 1 to 3 feet. 
.saturday night...west winds 15 to 20 knots becoming north.
showers with thunderstorms likely in the evening, then showers
likely overnight. waves 2 to 4 feet building to 3 to 5 feet. 
.sunday...northwest winds 15 to 20 knots becoming west and
diminishing to 5 to 10 knots. waves 3 to 5 feet subsiding to
1 foot or less. 
.monday...southwest winds 5 to 10 knots becoming south and
increasing to 15 to 20 knots. a chance of showers monday night.
waves 1 foot or less building to 1 to 3 feet. 
.tuesday...southwest winds 15 to 25 knots becoming west. showers
likely. waves 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$