fzus61 kbuf 210902
glflo 
expires:202512211600;;961124

open lake forecast for lake ontario
national weather service buffalo ny
402 am est sun dec 21 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 30.1 inch high over the lower great lakes will drift 
off the atlantic coastline tonight. a 29.5 inch low moving across 
ontario and quebec will push its attendant cold front across the 
lake sunday. a large 30.6 inch high will then build east across the 
lake monday. a 29.8 inch low just north of lake superior tuesday 
will pass north of the lake, resulting in a pair of fronts passing 
across the region.


loz064-065-211600-
lake ontario open waters from sodus bay to the saint lawrence
river-
402 am est sun dec 21 2025

...gale warning in effect through this evening...

.today...west gales to 35 knots diminishing to 30 knots. a chance
of snow showers early, then lake effect snow. a chance of snow
showers late. waves 12 to 17 feet subsiding to 11 to 15 feet.
waves occasionally around 22 feet. 
.tonight...northwest winds to 30 knots diminishing to 15 to
25 knots. a chance of snow showers early. waves 10 to 13 feet
subsiding to 3 to 5 feet. waves occasionally around 16 feet. 
.monday...west winds 15 to 20 knots. a chance of snow showers in
the morning. waves 3 to 6 feet. 
.monday night...southwest winds 15 to 20 knots becoming south. a
chance of snow in the evening, then snow overnight. waves 3 to
5 feet subsiding to 2 to 4 feet. 
.tuesday...southeast winds 15 to 25 knots becoming northwest to
30 knots. rain and snow during the day, then a chance of rain and
snow showers tuesday night. waves 2 to 4 feet building to 8 to
12 feet. waves occasionally around 15 feet. 
.wednesday...northwest winds 15 to 25 knots becoming south and
diminishing to 5 to 15 knots. a chance of rain showers wednesday
night. waves 6 to 9 feet subsiding to 2 feet or less. waves
occasionally around 11 feet. 
.thursday...south winds 10 to 15 knots becoming southeast 15 to
20 knots. a chance of rain showers during the day, then rain
showers likely thursday night. waves 1 to 3 feet building to 2 to
4 feet. 

$$

fzus61 kbuf 210902
glfsl 
expires:202512211600;;961120

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 am est sun dec 21 2025


slz022-211600-
saint lawrence river from cape vincent to ogdensburg-
402 am est sun dec 21 2025

.today...west winds 15 to 20 knots diminishing to 10 to 15 knots.
mostly sunny early, then becoming mostly cloudy. 
.tonight...northwest winds 5 to 15 knots becoming west less than
10 knots. mostly cloudy. 
.monday...southwest winds 10 knots or less. mostly cloudy. 
.monday night...southwest winds 5 to 10 knots becoming southeast.
a chance of snow in the evening, then snow likely overnight. 
.tuesday...southeast winds 5 to 15 knots becoming northwest. snow
with rain likely during the day, then a chance of snow and rain
showers tuesday night. 
.wednesday...northwest winds 10 to 15 knots becoming south less
than 10 knots. mostly cloudy. 
.thursday...southeast winds 10 knots or less becoming east. snow
showers likely thursday night. 

$$

fzus61 kbuf 210902
glfsl 
expires:202512211600;;961121

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 am est sun dec 21 2025


slz024-211600-
saint lawrence river from ogdensburg to saint regis-
402 am est sun dec 21 2025

.today...west winds 15 to 25 knots. mostly cloudy. 
.tonight...northwest winds 15 to 20 knots becoming west 5 to
15 knots. mostly cloudy. 
.monday...southwest winds 10 knots or less. mostly cloudy. 
.monday night...southwest winds 5 to 10 knots becoming southeast.
a chance of snow overnight. 
.tuesday...east winds 5 to 15 knots becoming northwest 15 to
20 knots. snow likely during the day, then snow showers likely
tuesday night. 
.wednesday...west winds 10 to 15 knots becoming southwest less
than 10 knots. mostly cloudy. 
.thursday...southwest winds 10 knots or less becoming east. snow
showers likely thursday night. 

$$