fzus61 kbuf 301502
glflo 
expires:202512302200;;498838

open lake forecast for lake ontario
national weather service buffalo ny
1002 am est tue dec 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...low pressure averaging 29.0 inches over georgian bay 
will move to northern new england and southern quebec today, then to 
the canadian maritimes by tuesday while deepening to 28.8 inches. a 
trough averaging 29.7 inches, will drop southward across the lake 
thursday and linger through friday.


loz065-302200-
lake ontario open waters from mexico bay to the saint lawrence
river-
1002 am est tue dec 30 2025

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

.this afternoon...west gales to 35 knots increasing to 40 knots.
snow showers likely, then a chance of snow showers late. waves
10 to 14 feet building to 13 to 17 feet. waves occasionally
around 22 feet. 
.tonight...west gales to 40 knots diminishing to 30 knots. a
chance of snow showers early. a chance of snow showers after
midnight. waves 12 to 16 feet subsiding to 7 to 10 feet. waves
occasionally around 20 feet. 
.wednesday...northwest winds 15 to 20 knots. lake effect snow
showers. waves 5 to 8 feet subsiding to 3 to 6 feet. waves
occasionally around 10 feet. 
.wednesday night...northwest winds 15 to 25 knots. lake effect
snow showers in the evening, then snow showers likely overnight.
waves 3 to 6 feet. 
.thursday...northwest winds 15 to 20 knots becoming west. lake
effect snow showers. waves 3 to 6 feet building to 5 to 8 feet.
waves occasionally around 10 feet. 
.friday...west winds 15 to 25 knots becoming northwest. lake
effect snow showers. waves 5 to 9 feet subsiding to 4 to 7 feet.
waves occasionally around 11 feet. 
.saturday...northwest winds 10 to 15 knots becoming north. a
chance of snow showers during the day. waves 2 to 4 feet
subsiding to 1 to 3 feet. 

$$

fzus61 kbuf 301502
glfsl 
expires:202512302200;;498834

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1002 am est tue dec 30 2025


slz022-024-302200-
saint lawrence river from cape vincent to saint regis
1002 am est tue dec 30 2025

...small craft advisory in effect through late tonight...

.this afternoon...west winds 15 to 25 knots. a chance of snow
showers. 
.tonight...west winds 15 to 25 knots diminishing to 10 to
15 knots. a chance of snow showers through the early overnight. 
.wednesday...west winds 5 to 10 knots. a chance of snow showers
in the afternoon. 
.wednesday night...west winds less than 10 knots. a chance of
snow showers. 
.thursday...west winds 10 knots or less becoming southwest.
partly to mostly cloudy. 
.friday...southwest winds 5 to 10 knots becoming northwest. a
chance of snow showers. 
.saturday...northwest winds less than 10 knots. partly to mostly
cloudy. 

$$