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open lake forecast for lake ontario
national weather service buffalo ny
402 am est fri jan 2 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 28.8 inch low will move north across the canadian 
maritimes through tonight, then to northern quebec by saturday. a 
30.3 inch high will then build from the western great lakes sunday 
to the lower great lakes by early monday, then drift off the east 
coast monday night. a weak trough of low pressure averaging 29.8 
inches will cross the great lakes tuesday through tuesday night, 
followed by a 30.1 inch high building into the ohio valley and lower 
great lakes wednesday.


loz063>065-021600-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am est fri jan 2 2026

.today...west winds 15 to 20 knots. lake effect snow. waves 5 to
8 feet. waves occasionally around 10 feet. 
.tonight...west winds 15 to 25 knots becoming northwest. a chance
of lake effect snow showers in the evening, then lake effect snow
showers likely after midnight. waves 5 to 8 feet. waves
occasionally around 10 feet. 
.saturday...northwest winds 15 to 20 knots diminishing to 5 to
15 knots. a chance of snow showers in the morning, then snow
showers likely in the afternoon. waves 4 to 7 feet subsiding to
1 to 3 feet. waves occasionally around 9 feet. 
.saturday night...northwest winds 5 to 10 knots becoming west.
snow showers likely. waves 2 feet or less. 
.sunday...northwest winds 10 to 15 knots becoming north 5 to
10 knots. snow showers likely during the day, then a chance of
snow showers sunday night. waves 1 to 3 feet building to 3 to
5 feet, then subsiding to 1 to 3 feet. 
.monday...southeast winds 5 to 15 knots becoming south. snow
showers likely. waves 1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots becoming south 15 to
20 knots. a chance of rain showers. waves 1 to 3 feet. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 am est fri jan 2 2026


slz022-024-021600-
saint lawrence river from cape vincent to saint regis
402 am est fri jan 2 2026

.today...light and variable winds becoming west 5 to 10 knots.
mostly cloudy through early afternoon, then becoming partly
sunny. 
.tonight...west winds 5 to 10 knots becoming northwest. mostly
cloudy. 
.saturday...northwest winds 10 knots or less becoming southwest.
mostly sunny. 
.saturday night...light and variable winds. a chance of snow
showers. 
.sunday...north winds less than 10 knots. a chance of snow
showers during the day. 
.monday...south winds less than 10 knots becoming northeast. snow
showers likely. 
.tuesday...northeast winds 10 knots or less becoming southeast. a
chance of snow showers. 

$$