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open lake forecast for lake ontario
national weather service buffalo ny
402 am est thu nov 20 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 30.3 inch high over the lower great lakes will slide 
out across new england through tonight. a 29.5 inch surface low near 
james bay will swing a cold front east across the lake friday, with 
a 30.1 inch high building over the ohio valley and lower great lakes 
saturday. a 29.5 inch low will then move from northern ontario to 
james bay sunday, while pushing its warm front across the lake 
saturday night, followed by its trailing cold front sunday. a 30.2 
inch high is forecast to build across the ohio valley monday.


loz062-201600-
lake ontario open waters from the niagara river to hamlin beach-
402 am est thu nov 20 2025

.today...southeast winds 5 to 10 knots. waves 1 foot or less. 
.tonight...south winds 10 knots or less becoming southwest 10 to
15 knots. waves 2 feet or less. 
.friday...southwest winds 10 to 15 knots becoming west. waves
1 to 3 feet building to 2 to 4 feet. 
.friday night...west winds 10 to 15 knots becoming northwest.
waves 1 to 3 feet. 
.saturday...north winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.sunday...southwest winds 15 to 20 knots becoming west. waves
1 to 3 feet building to 3 to 5 feet. 
.monday...west winds 15 to 20 knots becoming southeast and
diminishing to 5 to 10 knots. waves 2 to 4 feet subsiding to 1 to
3 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 am est thu nov 20 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 30.3 inch high over the lower great lakes will slide 
out across new england through tonight. a 29.5 inch surface low near 
james bay will swing a cold front east across the lake friday, with 
a 30.1 inch high building over the ohio valley and lower great lakes 
saturday. a 29.5 inch low will then move from northern ontario to 
james bay sunday, while pushing its warm front across the lake 
saturday night, followed by its trailing cold front sunday. a 30.2 
inch high is forecast to build across the ohio valley monday.


loz063-201600-
lake ontario open waters from hamlin beach to sodus bay-
402 am est thu nov 20 2025

.today...southeast winds 5 to 10 knots. waves 1 foot or less. 
.tonight...south winds 5 to 15 knots becoming southwest. waves
2 feet or less. 
.friday...southwest winds 15 to 20 knots becoming west. waves
1 to 3 feet building to 2 to 4 feet. 
.friday night...west winds 10 to 15 knots becoming northwest.
waves 2 to 4 feet. 
.saturday...north winds 5 to 15 knots becoming west. waves 1 to
3 feet. 
.sunday...southwest winds 10 to 15 knots becoming west 15 to
20 knots. waves 1 to 2 feet building to 3 to 6 feet. 
.monday...west winds 15 to 20 knots becoming southeast 10 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 

$$

fzus61 kbuf 200902
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expires:202511201600;;184883

open lake forecast for lake ontario
national weather service buffalo ny
402 am est thu nov 20 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 30.3 inch high over the lower great lakes will slide 
out across new england through tonight. a 29.5 inch surface low near 
james bay will swing a cold front east across the lake friday, with 
a 30.1 inch high building over the ohio valley and lower great lakes 
saturday. a 29.5 inch low will then move from northern ontario to 
james bay sunday, while pushing its warm front across the lake 
saturday night, followed by its trailing cold front sunday. a 30.2 
inch high is forecast to build across the ohio valley monday.


loz064-065-201600-
lake ontario open waters from sodus bay to the saint lawrence
river-
402 am est thu nov 20 2025

.today...southeast winds 5 to 10 knots. waves 1 foot or less. 
.tonight...southeast winds 5 to 15 knots becoming southwest.
waves 1 to 3 feet. 
.friday...south winds 15 to 20 knots becoming west. a chance of
showers. waves 2 to 4 feet building to 3 to 5 feet. 
.friday night...west winds 10 to 15 knots becoming northwest. a
chance of rain showers in the evening. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.saturday...north winds 5 to 15 knots becoming west. waves 1 to
3 feet. 
.sunday...southwest winds 10 to 15 knots becoming west 15 to
20 knots. a chance of rain showers. waves 1 to 3 feet building to
3 to 6 feet. 
.monday...northwest winds 15 to 20 knots becoming south 10 to
15 knots. a chance of rain showers. waves 3 to 6 feet subsiding
to 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 thu nov 20 2025


slz022-201600-
saint lawrence river from cape vincent to ogdensburg-
402 am est thu nov 20 2025

.today...southeast winds less than 10 knots becoming east. mostly
cloudy through early afternoon, then becoming mostly sunny. 
.tonight...light and variable winds becoming south 5 to 10 knots.
mainly clear early, then becoming mostly cloudy. 
.friday...south winds 5 to 10 knots becoming southwest. rain
showers. 
.friday night...west winds 10 knots or less becoming northwest. a
chance of rain showers in the evening. 
.saturday...northwest winds less than 10 knots. partly to mostly
cloudy. 
.sunday...south winds 5 to 10 knots becoming west. a chance of
rain showers. 
.monday...west winds 10 knots or less becoming south. mostly
cloudy. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
322 am est thu nov 20 2025

for waters beyond five nautical miles of shore on lake erie

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...
high pressure 30.10 inches will drift east away from lake erie
through tonight. a cold front will move east across lake erie 
friday and friday evening with high pressure 30.20 inches building
over the great lakes in its wake on saturday. a warm front lift 
across the lake late saturday into sunday, followed by another 
cold front on late sunday into early monday.


lez061-168-169-201530-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
322 am est thu nov 20 2025

.today...light and variable winds. waves 1 foot or less. 
.tonight...southwest winds 10 knots or less increasing to 10 to
15 knots. a slight chance of rain late. waves 2 feet or less. 
.friday...southwest winds 10 to 15 knots becoming west. waves
1 to 3 feet. 
.friday night...west winds 10 to 15 knots becoming north. waves
1 to 3 feet. 
.saturday...north winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.sunday...southwest winds 15 to 20 knots becoming west. waves
2 to 4 feet building to 3 to 5 feet. 
.monday...west winds 5 to 15 knots becoming southeast. a chance
of rain monday night. waves 1 to 3 feet. 

$$