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open lake forecast for lake ontario
national weather service buffalo ny
221 am est sat nov 29 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 29.5 inch surface low over eastern quebec this evening 
will slide to newfoundland overnight. meanwhile, a 30.5 inch surface 
high will build south into the mid-mississippi valley tonight, then 
to the ohio valley and lower great lakes saturday. another surface 
low will cut northeastward through the central great lakes sunday, 
slowly deepening from 29.6 inches sunday morning to 29.4 inches 
sunday night over western quebec. a cold front from this low will 
cross the lake late sunday night. a 30.4 inch surface high centered 
over the central plains will then build east across the great lakes 
monday, sliding quickly to new england on tuesday. a 29.7 inch 
surface low off the carolina coastline tuesday morning will deepen 
to 28.9 inches over southern atlantic canada by wednesday.


loz062-291000-
lake ontario open waters from the niagara river to hamlin beach-
221 am est sat nov 29 2025

...gale watch in effect from sunday morning through monday
morning...

.overnight...northwest winds 15 to 25 knots. waves 5 to
8 feet. waves occasionally around 10 feet. 
.saturday...northwest winds 15 to 20 knots becoming southwest
5 to 15 knots. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.saturday night...south winds 5 to 15 knots becoming southeast
and increasing to 15 to 25 knots. a chance of snow showers in the
evening, then snow showers overnight. waves 1 to 3 feet building
to 3 to 5 feet. 
.sunday...south winds to 30 knots becoming southwest and
increasing to 35 knot gales in the afternoon. rain and snow
showers in the morning, then rain showers in the afternoon. waves
3 to 6 feet building to 9 to 12 feet. waves occasionally around
15 feet. 
.sunday night...west gales to 35 knots becoming northwest and
diminishing to 30 knots overnight. rain showers likely with a
chance of snow showers in the evening, then a chance of snow
showers overnight. waves 8 to 12 feet. waves occasionally around
15 feet. 
.monday...northwest winds 15 to 25 knots becoming south and
diminishing to 5 to 10 knots. snow showers likely monday night.
waves 5 to 8 feet subsiding to 2 feet or less. waves occasionally
around 10 feet. 
.tuesday...southwest winds 5 to 15 knots becoming northwest. snow
showers likely during the day, then a chance of snow showers
tuesday night. waves 1 to 2 feet. 
.wednesday...west winds 15 to 20 knots increasing to 30 knots.
snow showers likely wednesday night. waves 2 to 3 feet building
to 5 to 8 feet. waves occasionally around 10 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
221 am est sat nov 29 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 29.5 inch surface low over eastern quebec this evening 
will slide to newfoundland overnight. meanwhile, a 30.5 inch surface 
high will build south into the mid-mississippi valley tonight, then 
to the ohio valley and lower great lakes saturday. another surface 
low will cut northeastward through the central great lakes sunday, 
slowly deepening from 29.6 inches sunday morning to 29.4 inches 
sunday night over western quebec. a cold front from this low will 
cross the lake late sunday night. a 30.4 inch surface high centered 
over the central plains will then build east across the great lakes 
monday, sliding quickly to new england on tuesday. a 29.7 inch 
surface low off the carolina coastline tuesday morning will deepen 
to 28.9 inches over southern atlantic canada by wednesday.


loz063-291000-
lake ontario open waters from hamlin beach to sodus bay-
221 am est sat nov 29 2025

...gale watch in effect from sunday morning through monday
morning...

.overnight...northwest winds 20 to 25 knots. a chance of
snow showers. waves 7 to 10 feet. waves occasionally around
13 feet. 
.saturday...northwest winds 15 to 20 knots becoming west 5 to
15 knots. a chance of snow showers early. waves 5 to 8 feet
subsiding to 2 to 4 feet. waves occasionally around 10 feet. 
.saturday night...southwest winds less than 10 knots becoming
southeast and increasing to 30 knots overnight. a chance of snow
showers in the evening, then snow showers overnight. waves 1 to
2 feet building to 3 to 6 feet. 
.sunday...south winds to 30 knots becoming southwest. snow and
rain showers. waves 5 to 9 feet building to 7 to 10 feet. waves
occasionally around 13 feet. 
.sunday night...southwest winds to 30 knots becoming northwest.
rain and snow showers likely in the evening, then snow showers
likely overnight. waves 10 to 14 feet. waves occasionally around
18 feet. 
.monday...northwest winds to 30 knots becoming south and
diminishing to 5 to 15 knots. a chance of snow showers monday
night. waves 8 to 11 feet subsiding to 1 to 2 feet. waves
occasionally around 14 feet. 
.tuesday...south winds 10 to 15 knots becoming northwest. snow
showers likely during the day, then a chance of snow showers
tuesday night. waves 1 to 3 feet. 
.wednesday...west winds 15 to 25 knots increasing to 30 knots.
snow showers likely wednesday night. waves 2 to 3 feet building
to 6 to 9 feet. waves occasionally around 11 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
221 am est sat nov 29 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 29.5 inch surface low over eastern quebec this evening 
will slide to newfoundland overnight. meanwhile, a 30.5 inch surface 
high will build south into the mid-mississippi valley tonight, then 
to the ohio valley and lower great lakes saturday. another surface 
low will cut northeastward through the central great lakes sunday, 
slowly deepening from 29.6 inches sunday morning to 29.4 inches 
sunday night over western quebec. a cold front from this low will 
cross the lake late sunday night. a 30.4 inch surface high centered 
over the central plains will then build east across the great lakes 
monday, sliding quickly to new england on tuesday. a 29.7 inch 
surface low off the carolina coastline tuesday morning will deepen 
to 28.9 inches over southern atlantic canada by wednesday.


loz064-065-291000-
lake ontario open waters from sodus bay to the saint lawrence
river-
221 am est sat nov 29 2025

...gale watch in effect from sunday morning through monday
morning...

.overnight...northwest winds 20 to 25 knots. waves 7 to
11 feet. waves occasionally around 14 feet. 
.saturday...northwest winds 15 to 25 knots becoming west and
diminishing to 5 to 15 knots. waves 5 to 8 feet subsiding to 2 to
4 feet. waves occasionally around 10 feet. 
.saturday night...southwest winds less than 10 knots becoming
southeast and increasing to 30 knots overnight. snow showers
overnight. waves 1 to 3 feet building to 3 to 6 feet. 
.sunday...south winds to 30 knots becoming southwest and
increasing to 35 knot gales in the afternoon. snow and rain
showers. waves 5 to 8 feet building to 10 to 13 feet. waves
occasionally around 16 feet. 
.sunday night...southwest gales to 35 knots becoming northwest
and diminishing to 30 knots overnight. rain and snow showers in
the evening, then snow showers, rain showers with a chance of
freezing rain overnight. waves 10 to 15 feet. waves occasionally
around 19 feet. 
.monday...northwest winds to 30 knots becoming south and
diminishing to 15 to 20 knots. a chance of freezing rain during
the day, then a chance of snow showers monday night. waves 9 to
12 feet subsiding to 1 to 3 feet. waves occasionally around
15 feet. 
.tuesday...south winds 15 to 20 knots becoming north 10 to
15 knots. snow showers. waves 1 to 3 feet. 
.wednesday...west winds 10 to 15 knots increasing to 30 knots. a
chance of snow showers during the day, then snow showers likely
wednesday night. waves 1 to 3 feet building to 5 to 9 feet. waves
occasionally around 11 feet. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
221 am est sat nov 29 2025


slz022-291000-
saint lawrence river from cape vincent to ogdensburg-
221 am est sat nov 29 2025

.overnight...west winds 10 to 15 knots. partly cloudy. 
.saturday...west winds 10 knots or less. sunny.
.saturday night...light and variable winds becoming southeast
10 to 15 knots. snow showers overnight. 
.sunday...southeast winds 10 to 15 knots becoming south 15 to
20 knots. snow showers in the morning, then rain and snow showers
in the afternoon. 
.sunday night...southwest winds 15 to 20 knots becoming west
10 to 15 knots. rain and snow showers in the evening, then snow
showers, rain showers with a chance of freezing rain overnight. 
.monday...northwest winds 5 to 15 knots becoming south 10 knots
or less. a chance of freezing rain during the day, then a chance
of snow showers monday night. 
.tuesday...south winds 10 knots or less becoming northwest. snow
showers likely. 
.wednesday...southwest winds 10 knots or less becoming west 10 to
15 knots. snow showers likely wednesday night. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
926 pm est fri nov 28 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 30.50 inches builds in from the south tonight,
exiting quickly saturday night as strong low pressure 29.70
inches and a cold front tracks through early sunday. high pressure
30.50 inches builds back in over lake erie monday.


lez061-167>169-290915-
ripley to buffalo ny extending from 5nm 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-
926 pm est fri nov 28 2025

.rest of tonight...west winds to 30 knots diminishing to 15 to
20 knots. a chance of flurries, then a slight chance of snow
late. waves 6 to 10 feet subsiding to 4 to 7 feet. waves
occasionally around 13 feet. 
.saturday...west winds 5 to 15 knots becoming south. a slight
chance of snow early. a slight chance of snow early in the
afternoon, then snow likely late. waves 3 to 5 feet subsiding to
1 to 3 feet. 
.saturday night...southeast winds 15 to 25 knots becoming south
to 30 knots. snow. waves 1 to 3 feet building to 5 to 8 feet.
waves occasionally around 10 feet. 
.sunday...south winds to 30 knots becoming west and increasing to
35 knot gales in the afternoon. rain and snow in the morning,
then rain in the afternoon. waves 7 to 10 feet building to 11 to
15 feet. waves occasionally around 19 feet. 
.sunday night...west gales to 35 knots becoming northwest and
diminishing to 15 to 20 knots overnight. snow likely with rain in
the evening, then snow likely overnight. waves 10 to 15 feet
subsiding to 5 to 8 feet. waves occasionally around 19 feet. 
.monday...northwest winds 15 to 20 knots becoming south and
diminishing to 5 to 10 knots. snow likely monday night. waves
3 to 5 feet subsiding to 2 feet or less. 
.tuesday...west winds 5 to 15 knots becoming northwest. snow
likely during the day. waves 1 to 3 feet. 
.wednesday...west winds 15 to 20 knots increasing to 30 knots. a
chance of snow wednesday night. waves 3 to 5 feet building to
5 to 9 feet. waves occasionally around 11 feet. 

$$