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open lake forecast for lake ontario
national weather service buffalo ny
1002 am est thu nov 13 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 29.2 inch low will develop south of nova scotia today, 
then move north across the canadian maritimes friday, remaining in 
place through saturday. meanwhile, a 30.1 inch high over the ohio 
valley this thursday morning will build towards the lake tomorrow 
before fading to the mid-atlantic coastline saturday. a 29.2 inch 
low will track across the lake and to new england through the day on 
sunday. a trough averaging 29.60 inches then lingers over lake erie 
through monday.


loz062-132200-
lake ontario open waters from the niagara river to hamlin beach-
1002 am est thu nov 13 2025

.rest of today...northwest winds to 30 knots diminishing to 15 to
25 knots. a chance of showers. waves 5 to 8 feet. waves
occasionally around 10 feet. 
.tonight...west winds 15 to 25 knots becoming northwest. a chance
of showers early, then showers likely late in the evening. a
chance of showers after midnight. waves 3 to 6 feet subsiding to
2 to 4 feet. 
.friday...northwest winds 10 to 15 knots. waves 1 to 3 feet. 
.friday night...north winds 5 to 10 knots becoming southeast.
waves 1 to 2 feet. 
.saturday...southeast winds 5 to 15 knots becoming west and
increasing to 30 knots. rain showers likely during the day, then
rain saturday night. waves 1 foot or less building to 3 to
5 feet. 
.sunday...west winds to 30 knots becoming northwest. rain showers
likely during the day, then rain and snow showers likely sunday
night. waves 5 to 9 feet subsiding to 4 to 7 feet. waves
occasionally around 11 feet. 
.monday...northwest winds to 30 knots diminishing to 15 to
20 knots. a chance of rain and snow showers. waves 4 to 7 feet
subsiding to 2 to 4 feet. waves occasionally around 9 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 am est thu nov 13 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 29.2 inch low will develop south of nova scotia today, 
then move north across the canadian maritimes friday, remaining in 
place through saturday. meanwhile, a 30.1 inch high over the ohio 
valley this thursday morning will build towards the lake tomorrow 
before fading to the mid-atlantic coastline saturday. a 29.2 inch 
low will track across the lake and to new england through the day on 
sunday. a trough averaging 29.60 inches then lingers over lake erie 
through monday.


loz063-132200-
lake ontario open waters from hamlin beach to sodus bay-
1002 am est thu nov 13 2025

.rest of today...northwest winds 20 to 25 knots. lake effect
showers likely late this morning, then a chance of showers this
afternoon. waves 5 to 8 feet. waves occasionally around 10 feet. 
.tonight...northwest winds 15 to 25 knots. a chance of showers
early, then showers likely late in the evening. a chance of
showers after midnight. waves 4 to 7 feet subsiding to 3 to
6 feet. waves occasionally around 9 feet. 
.friday...northwest winds 15 to 20 knots. a chance of showers.
waves 2 to 4 feet. 
.friday night...north winds 5 to 15 knots becoming northeast. a
chance of rain showers in the evening. waves 1 to 2 feet. 
.saturday...southeast winds 5 to 15 knots becoming west and
increasing to 30 knots. rain showers likely during the day, then
rain saturday night. waves 1 to 2 feet building to 3 to 5 feet. 
.sunday...west winds to 30 knots becoming northwest. rain showers
likely during the day, then rain showers with snow showers likely
sunday night. waves 6 to 9 feet building to 7 to 11 feet, then
subsiding to 6 to 9 feet. waves occasionally around 14 feet. 
.monday...northwest winds to 30 knots diminishing to 15 to
20 knots. rain and snow showers likely during the day, then a
chance of rain and snow showers monday night. waves 6 to 10 feet
subsiding to 3 to 5 feet. waves occasionally around 13 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 am est thu nov 13 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 29.2 inch low will develop south of nova scotia today, 
then move north across the canadian maritimes friday, remaining in 
place through saturday. meanwhile, a 30.1 inch high over the ohio 
valley this thursday morning will build towards the lake tomorrow 
before fading to the mid-atlantic coastline saturday. a 29.2 inch 
low will track across the lake and to new england through the day on 
sunday. a trough averaging 29.60 inches then lingers over lake erie 
through monday.


loz064-065-132200-
lake ontario open waters from sodus bay to the saint lawrence
river-
1002 am est thu nov 13 2025

.rest of today...northwest winds 15 to 25 knots. a chance of
showers. waves 5 to 8 feet. waves occasionally around 10 feet. 
.tonight...northwest winds 15 to 25 knots. a chance of rain
showers. waves 4 to 7 feet subsiding to 3 to 6 feet. waves
occasionally around 9 feet. 
.friday...northwest winds 15 to 20 knots. a chance of rain
showers. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday night...north winds 5 to 15 knots becoming east. a chance
of rain showers in the evening. waves 1 to 3 feet subsiding to
1 foot or less. 
.saturday...southeast winds 5 to 10 knots becoming west and
increasing to 30 knots. rain showers likely during the day, then
rain saturday night. waves 1 to 3 feet building to 3 to 5 feet. 
.sunday...west winds to 30 knots becoming northwest. rain showers
during the day, then rain and snow showers sunday night. waves
6 to 9 feet building to 7 to 11 feet, then subsiding to 6 to
9 feet. waves occasionally around 14 feet. 
.monday...northwest winds to 30 knots diminishing to 15 to
25 knots. rain and snow showers likely during the day, then a
chance of rain and snow showers monday night. waves 6 to 10 feet
subsiding to 3 to 6 feet. waves occasionally around 13 feet. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1002 am est thu nov 13 2025


slz022-132200-
saint lawrence river from cape vincent to ogdensburg-
1002 am est thu nov 13 2025

.rest of today...west winds 5 to 10 knots. a chance of rain and
snow showers late this morning, then a chance of rain showers
early this afternoon. 
.tonight...west winds 5 to 10 knots becoming northwest. partly to
mostly cloudy. 
.friday...northwest winds 5 to 10 knots. partly sunny. 
.friday night...northwest winds 5 to 10 knots becoming light and
variable. partly cloudy. 
.saturday...south winds 10 knots or less becoming southwest. a
chance of rain showers during the day, then rain saturday night. 
.sunday...west winds 5 to 15 knots. rain and snow showers likely
during the day, then snow showers likely sunday night. 
.monday...west winds 5 to 15 knots. a chance of rain and snow
showers during the day. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
938 am est thu nov 13 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...
a ridge averaging 30.20 inches builds northeast from the mid 
mississippi valley toward lake erie today and friday. the ridge 
exits eastward friday night allowing a warm front to lift 
northeastward across the lake saturday morning. a cold front then 
sweeps eastward across the lake saturday night followed by a 
second cold front sunday. a trough averaging 29.60 inches then 
lingers over lake erie through monday.


lez061-166>169-132130-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 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-
938 am est thu nov 13 2025

.this afternoon...west winds 20 to 25 knots. waves 5 to 8 feet. 
.tonight...west winds 15 to 25 knots becoming northwest and
diminishing to 10 to 15 knots. waves 3 to 6 feet subsiding to
2 to 4 feet. 
.friday...northwest winds 5 to 15 knots becoming west. waves 1 to
3 feet. 
.friday night...west winds 5 to 10 knots becoming south. waves
1 foot or less. 
.saturday...south winds 15 to 25 knots becoming northwest to
30 knots. rain. waves 2 to 4 feet building to 6 to 9 feet. waves
occasionally around 11 feet. 
.sunday...northwest winds to 30 knots becoming west. a chance of
rain. waves 7 to 11 feet. waves occasionally around 14 feet. 
.monday...west winds to 30 knots becoming northwest and
diminishing to 10 to 15 knots. a chance of rain monday night.
waves 6 to 9 feet subsiding to 1 to 3 feet. waves occasionally
around 11 feet. 

$$