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


slz022-024-021615-
saint lawrence river from cape vincent to saint regis
406 am est sun nov 2 2025

.today...west winds 10 knots or less becoming southwest. partly
to mostly sunny. 
.tonight...south winds 10 knots or less increasing to 10 to
15 knots. partly to mostly cloudy. 
.monday...southwest winds 10 to 15 knots increasing to 15 to
25 knots. showers.
.monday night...southwest winds 15 to 20 knots becoming west
10 to 15 knots. rain showers. 
.tuesday...west winds 5 to 15 knots becoming southwest. a chance
of rain showers tuesday night. 
.wednesday...southwest winds 5 to 10 knots becoming west. rain
showers likely. 
.thursday...northwest winds 5 to 10 knots becoming south. a
chance of rain showers during the day. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 am 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...a large 30.3 inch area of high pressure will build 
across the ohio valley and lower great lakes region today before 
sliding 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 and then carrying east of the lake for 
friday.


loz062-021600-
lake ontario open waters from the niagara river to hamlin beach-
402 am est sun nov 2 2025

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

.today...west winds 10 knots or less becoming south. waves 1 foot
or less. 
.tonight...southwest winds 10 to 15 knots increasing to 15 to
25 knots. waves 1 to 3 feet building to 3 to 6 feet. 
.monday...southwest winds to 30 knots becoming west and
increasing to 35 knot gales. showers. waves 5 to 8 feet building
to 10 to 13 feet. waves occasionally around 16 feet. 
.monday night...west winds to 30 knots. showers in the evening,
then a chance of showers overnight. waves 9 to 13 feet subsiding
to 7 to 10 feet. waves occasionally around 16 feet. 
.tuesday...west winds to 30 knots diminishing to 10 to 15 knots.
waves 6 to 10 feet subsiding to 2 to 4 feet. waves occasionally
around 13 feet. 
.wednesday...southwest winds 10 to 15 knots becoming northwest
and increasing to 15 to 25 knots. showers likely. waves 1 to
3 feet building to 4 to 7 feet. waves occasionally around 9 feet.
.thursday...northwest winds 15 to 20 knots becoming south 10 to
15 knots. waves 3 to 6 feet subsiding to 1 to 3 feet. 

$$

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glflo 
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open lake forecast for lake ontario
national weather service buffalo ny
402 am 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...a large 30.3 inch area of high pressure will build 
across the ohio valley and lower great lakes region today before 
sliding 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 and then carrying east of the lake for 
friday.


loz063>065-021600-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am est sun nov 2 2025

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

.today...northwest winds 5 to 10 knots becoming south. waves
1 foot or less. 
.tonight...south winds 5 to 15 knots becoming southwest and
increasing to 15 to 25 knots. waves 2 feet or less building to
3 to 5 feet. 
.monday...southwest winds 15 to 25 knots becoming west and
increasing to 35 knot gales in the afternoon. showers. waves 4 to
7 feet building to 10 to 15 feet. waves occasionally around
19 feet. 
.monday night...west gales to 35 knots diminishing to 30 knots
overnight. showers. waves 11 to 16 feet subsiding to 10 to
14 feet. waves occasionally around 20 feet. 
.tuesday...west winds to 30 knots diminishing to 15 to 25 knots.
a chance of showers tuesday night. waves 9 to 12 feet subsiding
to 3 to 6 feet. waves occasionally around 15 feet. 
.wednesday...southwest winds 10 to 15 knots becoming northwest
and increasing to 30 knots. showers. waves 2 to 4 feet building
to 5 to 9 feet. waves occasionally around 11 feet. 
.thursday...northwest winds 15 to 25 knots becoming south 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. 

$$