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open lake forecast for lake ontario
national weather service buffalo ny
437 pm est sun nov 2 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...30.3 inch high pressure will build east of the region 
tonight before continuing east and off the mid-atlantic coastline on 
monday. a cold front will then push east across the lake later 
monday and monday night, with another 30.3 inch high over the 
mississippi valley advancing eastward across the ohio valley and mid-
atlantic states tuesday and wednesday. a weak cold front will drop 
across the lake wednesday night with another 30.3 inch surface high 
reestablishing over the lake for thursday. the surface high will 
then track east off the atlantic coast through friday.


loz063>065-030400-
lake ontario open waters from hamlin beach to the saint lawrence
river-
437 pm est sun nov 2 2025

...gale watch in effect from monday morning through late monday
night...

.tonight...south winds 10 to 15 knots becoming southwest 15 to
20 knots. waves 1 to 3 feet building to 3 to 5 feet. 
.monday...southwest winds 15 to 25 knots becoming west and
increasing to 35 knot gales in the afternoon. a chance of showers
late in the morning. showers in the afternoon. waves 3 to 6 feet
building to 12 to 17 feet. waves occasionally around 22 feet. 
.monday night...west gales to 35 knots diminishing to 30 knots
overnight. showers likely. waves 12 to 16 feet subsiding to 10 to
14 feet. waves occasionally around 20 feet. 
.tuesday...west winds to 30 knots. a chance of showers in the
morning. waves 9 to 13 feet. waves occasionally around 16 feet. 
.tuesday night...west winds 15 to 25 knots becoming southwest and
diminishing to 10 to 15 knots. waves 7 to 10 feet subsiding to
3 to 6 feet. waves occasionally around 13 feet. 
.wednesday...south winds 15 to 25 knots becoming northwest to
30 knots. showers. waves 2 to 4 feet building to 6 to 9 feet.
waves occasionally around 11 feet. 
.thursday...northwest winds 15 to 25 knots becoming southwest
15 to 20 knots. a chance of showers during the day. waves 5 to
8 feet subsiding to 1 to 3 feet. waves occasionally around
10 feet. 
.friday...south winds 15 to 25 knots becoming west to 30 knots.
showers. waves 3 to 5 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 pm est sun nov 2 2025


slz022-024-030400-
saint lawrence river from cape vincent to saint regis
402 pm est sun nov 2 2025

.tonight...south winds 5 to 15 knots increasing to 15 to
20 knots. mainly clear this evening, then becoming partly cloudy.
.monday...south winds 10 to 15 knots becoming southwest 15 to
20 knots. a chance of rain showers late in the morning. rain
showers in the afternoon. 
.monday night...southwest winds 15 to 20 knots becoming west
10 to 15 knots. rain showers likely. 
.tuesday...west winds 10 to 15 knots. a chance of rain showers in
the morning. 
.tuesday night...west winds 10 knots or less becoming southwest.
a chance of rain showers overnight. 
.wednesday...southwest winds 5 to 10 knots becoming northwest.
rain showers. 
.thursday...northwest winds 10 knots or less becoming southwest.
partly to mostly cloudy. 
.friday...south winds 5 to 15 knots becoming southwest. rain
showers. 

$$