fzus61 kbuf 310202
glflo 
expires:202510310900;;588423

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu oct 30 2025

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 29.4 inch low will cross new york state tonight 
before heading to new england on friday, and to the canadian 
maritimes friday night and saturday while steadily deepening to 28.7 
inches. a large 30.3 inch surface high will then build across the 
ohio valley and lower great lakes region through sunday, before 
sliding east and off the mid-atlantic coastline on monday. a cold 
front will slide east across the lake monday night through tuesday.


loz063>065-310900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt thu oct 30 2025

...gale warning in effect from friday afternoon through late
friday night...

.overnight...northeast winds to 30 knots becoming north
15 to 25 knots. showers. waves 7 to 10 feet subsiding to 5 to
8 feet. waves occasionally around 13 feet. 
.friday...north winds 15 to 25 knots becoming northwest and
increasing to 40 knot gales in the afternoon. showers. waves 4 to
7 feet building to 12 to 16 feet. waves occasionally around
20 feet. 
.friday night...northwest gales to 35 knots diminishing to
30 knots. showers. waves 12 to 16 feet subsiding to 10 to
14 feet. waves occasionally around 20 feet. 
.saturday...northwest winds 15 to 25 knots. a chance of showers.
waves 7 to 10 feet subsiding to 3 to 6 feet. waves occasionally
around 13 feet. 
.saturday night...northwest winds 5 to 15 knots. a chance of
showers. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.sunday...northwest winds 5 to 15 knots becoming southwest 15 to
20 knots. a chance of showers. waves 2 feet or less building to
2 to 4 feet. 
.monday...southwest winds 15 to 25 knots becoming west to
30 knots. showers. waves 3 to 6 feet building to 10 to 13 feet.
waves occasionally around 16 feet. 
.tuesday...west winds to 30 knots diminishing to 15 to 25 knots.
a chance of showers. waves 9 to 13 feet subsiding to 4 to 7 feet.
waves occasionally around 16 feet. 

$$

fzus61 kbuf 310202
glfsl 
expires:202510310900;;588421

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1002 pm edt thu oct 30 2025


slz022-024-310900-
saint lawrence river from cape vincent to saint regis
1002 pm edt thu oct 30 2025

.overnight...northeast winds 10 to 15 knots. showers.
.friday...northeast winds 10 to 15 knots becoming west 15 to
20 knots. showers.
.friday night...west winds 15 to 20 knots diminishing to 10 to
15 knots. rain showers. 
.saturday...west winds 10 to 15 knots. rain showers likely in the
morning, then a chance of rain showers in the afternoon. 
.saturday night...west winds 5 to 10 knots becoming light and
variable. mostly cloudy. 
.sunday...west winds 10 knots or less becoming south. a chance of
rain showers sunday night. 
.monday...southwest winds 10 to 15 knots becoming west. rain
showers. 
.tuesday...west winds 5 to 15 knots. a chance of rain showers. 

$$