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open lake forecast for lake ontario
national weather service buffalo ny
1002 am est wed nov 5 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...low pressure over the upper great lakes will deepen from 
29.6 inches to 29.4 inches as it passes along or just north of the 
north shore of the lake this afternoon into this evening, before 
making its way across new england tonight while further 
strengthening to 29.2 inches. in its wake, a 30.2 inch high will 
build from the ohio valley to the mid-atlantic states thursday, then 
will slide out to sea through friday while allowing a 29.4 inch low 
to track from the upper great lakes to quebec and push its trailing 
cold front across the lake friday night. another 29.5 inch surface 
low will then track from the ohio valley to new england sunday and 
monday.


loz062-052200-
lake ontario open waters from the niagara river to hamlin beach-
1002 am est wed nov 5 2025

...gale warning in effect through late tonight...

.rest of today...southwest winds 15 to 25 knots becoming west and
increasing to 35 knot gales this afternoon. showers. waves 3 to
5 feet building to 9 to 12 feet. waves occasionally around
15 feet. 
.tonight...northwest gales to 35 knots diminishing to 30 knots.
showers through the early overnight, then a chance of showers
late. waves 10 to 14 feet subsiding to 7 to 11 feet. waves
occasionally around 18 feet. 
.thursday...northwest winds 15 to 25 knots becoming west. waves
5 to 8 feet subsiding to 2 to 4 feet. waves occasionally around
10 feet. 
.thursday night...west winds 10 to 15 knots becoming south. waves
1 to 3 feet. 
.friday...south winds 15 to 25 knots becoming west. showers.
waves 3 to 6 feet. 
.saturday...northwest winds 15 to 20 knots becoming northeast
10 to 15 knots. a chance of showers during the day, then showers
likely saturday night. waves 3 to 5 feet subsiding to 1 to
3 feet. 
.sunday...northeast winds 15 to 20 knots becoming northwest. rain
showers likely during the day, then rain showers likely with a
chance of snow showers sunday night. waves 3 to 5 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 am est wed nov 5 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...low pressure over the upper great lakes will deepen from 
29.6 inches to 29.4 inches as it passes along or just north of the 
north shore of the lake this afternoon into this evening, before 
making its way across new england tonight while further 
strengthening to 29.2 inches. in its wake, a 30.2 inch high will 
build from the ohio valley to the mid-atlantic states thursday, then 
will slide out to sea through friday while allowing a 29.4 inch low 
to track from the upper great lakes to quebec and push its trailing 
cold front across the lake friday night. another 29.5 inch surface 
low will then track from the ohio valley to new england sunday and 
monday.


loz063>065-052200-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am est wed nov 5 2025

...gale warning in effect through late tonight...

.rest of today...south winds 15 to 20 knots becoming southwest
and increasing to 35 knot gales this afternoon. a chance of
showers late this morning, then showers this afternoon. waves
2 to 4 feet building to 9 to 12 feet. waves occasionally around
15 feet. 
.tonight...west gales to 40 knots becoming northwest and
diminishing to 30 knots after midnight. rain showers through the
early overnight, then a chance of rain showers late. waves 12 to
17 feet subsiding to 9 to 12 feet. waves occasionally around
22 feet. 
.thursday...northwest winds 15 to 25 knots becoming west. waves
7 to 10 feet subsiding to 3 to 6 feet. waves occasionally around
13 feet. 
.thursday night...west winds 15 to 20 knots becoming south. waves
3 to 5 feet subsiding to 1 to 3 feet. 
.friday...south winds to 30 knots becoming west 15 to 25 knots.
showers. waves 5 to 8 feet subsiding to 3 to 6 feet. waves
occasionally around 10 feet. 
.saturday...northwest winds 15 to 20 knots becoming east 5 to
15 knots. rain showers likely. waves 3 to 6 feet subsiding to
1 to 3 feet. 
.sunday...east winds 15 to 20 knots becoming northwest. rain
showers during the day, then rain showers with snow showers
likely sunday night. waves 2 to 4 feet building to 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 wed nov 5 2025


slz022-052200-
saint lawrence river from cape vincent to ogdensburg-
1002 am est wed nov 5 2025

...small craft advisory in effect from 4 pm est
through late tonight...

.this afternoon...southeast winds 5 to 15 knots becoming south
15 to 20 knots. showers.
.tonight...northwest winds 15 to 25 knots. rain showers in the
evening, then a chance of rain showers after midnight. a chance
of rain and snow showers late. 
.thursday...northwest winds 5 to 15 knots becoming west. mostly
sunny. 
.thursday night...west winds 10 knots or less becoming south.
partly cloudy in the evening, then becoming mostly cloudy. 
.friday...south winds 10 to 15 knots becoming southwest. rain
showers. 
.saturday...northwest winds 10 knots or less becoming northeast.
rain showers during the day, then a chance of rain showers
saturday night. 
.sunday...northeast winds 5 to 10 knots becoming west. rain and
snow showers. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
915 am est wed nov 5 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...
low pressure 29.70 inches will move east across the great lakes 
region today, pushing a cold front southeast across the lake this
afternoon. high pressure 30.30 inches will briefly return for 
thursday before departing to the east thursday night. low pressure
29.50 inches will enter the northern great lakes on friday 
bringing a warm front across the area friday morning, followed by 
a cold front friday night. low pressure 29.60 inches will move 
through the area on saturday night into sunday.


lez061-168-169-052115-
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-
915 am est wed nov 5 2025

...gale warning in effect through this evening...

.rest of today...southwest winds to 30 knots becoming west and
increasing to 35 knot gales this afternoon. a slight chance of
showers late this morning, then a chance of showers early this
afternoon. showers late. waves 7 to 10 feet building to 11 to
15 feet. waves occasionally around 19 feet. 
.tonight...northwest gales to 35 knots diminishing to 30 knots. a
chance of showers through the early overnight, then a slight
chance of showers late. waves 11 to 15 feet subsiding to 6 to
9 feet. waves occasionally around 19 feet. 
.thursday...northwest winds 15 to 20 knots becoming west 5 to
15 knots. waves 4 to 7 feet subsiding to 1 to 3 feet. waves
occasionally around 9 feet. 
.thursday night...southwest winds 5 to 10 knots becoming south
and increasing to 15 to 20 knots. waves 1 to 3 feet building to
2 to 4 feet. 
.friday...south winds to 30 knots becoming west and diminishing
to 15 to 20 knots. showers. waves 5 to 8 feet. waves occasionally
around 10 feet. 
.saturday...northwest winds 15 to 20 knots becoming east 5 to
15 knots. a chance of showers during the day, then showers likely
saturday night. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.sunday...north winds 15 to 25 knots becoming northwest. rain
showers during the day, then rain and snow showers sunday night.
waves 3 to 6 feet building to 5 to 8 feet. waves occasionally
around 10 feet. 

$$