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open lake forecast for lake ontario
national weather service buffalo ny
1002 am est mon dec 8 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 30.4 inch high will move across the lake this 
afternoon, and slide to the east tonight, and then move off the east 
coast tomorrow. a 29.5 inch low will move across the upper great 
lakes tuesday, then a stronger low averaging 29.3 inches will 
approach the region tuesday night and potentially move northwest of 
the lake wednesday. a 29.9 inch high is expected to move into the 
great lakes region thursday, followed by a 29.6 inch low which may 
approach the lake from the northwest late friday.


loz064-065-082200-
lake ontario open waters from sodus bay to the saint lawrence
river-
1002 am est mon dec 8 2025

.this afternoon...north winds 10 knots or less becoming west.
waves 1 to 3 feet subsiding to 1 foot or less. 
.tonight...west winds 5 to 15 knots becoming south. waves 2 feet
or less. 
.tuesday...south winds 15 to 25 knots increasing to 30 knots.
snow showers likely in the afternoon. waves 2 to 4 feet building
to 6 to 9 feet. waves occasionally around 11 feet. 
.tuesday night...south winds to 30 knots becoming southwest. snow
showers in the evening, then snow and rain showers overnight.
waves 5 to 9 feet. waves occasionally around 11 feet. 
.wednesday...south winds to 30 knots becoming northwest. rain and
snow showers. waves 4 to 7 feet building to 7 to 10 feet. waves
occasionally around 13 feet. 
.thursday...northwest winds 15 to 25 knots becoming west. snow
showers likely during the day, then a chance of snow showers
thursday night. waves 5 to 8 feet subsiding to 2 to 4 feet. waves
occasionally around 10 feet. 
.friday...west winds 15 to 25 knots becoming southwest. snow
showers likely. waves 3 to 6 feet. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1002 am est mon dec 8 2025


slz022-082200-
saint lawrence river from cape vincent to ogdensburg-
1002 am est mon dec 8 2025

.this afternoon...light and variable winds. sunny.
.tonight...light and variable winds. mainly clear early, then
becoming mostly cloudy. 
.tuesday...south winds 5 to 15 knots increasing to 15 to
20 knots. a chance of snow showers in the afternoon. 
.tuesday night...south winds 15 to 20 knots diminishing to 10 to
15 knots. snow showers. 
.wednesday...south winds 10 to 15 knots becoming west 5 to
10 knots. snow and rain showers. 
.thursday...west winds 10 knots or less. snow showers likely
during the day, then a chance of snow showers thursday night. 
.friday...west winds 5 to 10 knots becoming south. a chance of
snow showers during the day, then snow showers likely friday
night. 

$$