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open lake forecast for lake ontario
national weather service buffalo ny
1010 am edt thu apr 9 2026

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 30.6 inch high will drift southeast of nova scotia 
today. a 29.5 inch low will move across james bay today to northern 
quebec tonight, with a trailing cold front crossing the lake tonight 
through friday. a 30.5 inch high is then forecast to build into the 
central great lakes saturday, then drift east to new england by 
sunday. the cold front from a 29.4 inch low near james bay will 
approach the lake monday and then stall nearby into tuesday.


loz062-092100-
lake ontario open waters from the niagara river to hamlin beach-
1010 am edt thu apr 9 2026

.this afternoon...south winds 15 to 20 knots becoming southwest. a
chance of showers late. waves 2 to 4 feet building to 3 to
5 feet. 
.tonight...southwest winds 15 to 20 knots becoming north 5 to
15 knots. a chance of rain showers late. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.friday...north winds 5 to 10 knots becoming northwest. rain
showers. waves around 1 foot. 
.friday night...northwest winds around 10 knots. rain showers in
the evening. waves 1 to 2 feet. 
.saturday...northwest winds 10 knots or less becoming southeast.
waves 2 feet or less. 
.sunday...east winds 5 to 10 knots becoming southwest and
increasing to 15 to 25 knots. a chance of rain showers. waves
1 foot or less building to 3 to 6 feet. 
.monday...southwest winds to 30 knots diminishing to 15 to
25 knots. a chance of showers. waves 4 to 7 feet building to 5 to
9 feet, then subsiding to 4 to 6 feet. waves occasionally around
11 feet. 

$$

fzus61 kbuf 091410
glflo 
expires:202604092100;;084559

open lake forecast for lake ontario
national weather service buffalo ny
1010 am edt thu apr 9 2026

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 30.6 inch high will drift southeast of nova scotia 
today. a 29.5 inch low will move across james bay today to northern 
quebec tonight, with a trailing cold front crossing the lake tonight 
through friday. a 30.5 inch high is then forecast to build into the 
central great lakes saturday, then drift east to new england by 
sunday. the cold front from a 29.4 inch low near james bay will 
approach the lake monday and then stall nearby into tuesday.


loz063>065-092100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1010 am edt thu apr 9 2026

.this afternoon...south winds 15 to 25 knots. a chance of showers
late. waves 3 to 6 feet. 
.tonight...south winds 15 to 20 knots becoming west 10 to
15 knots. a chance of showers in the evening. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.friday...west winds 5 to 10 knots becoming northwest. rain
showers. waves 1 to 2 feet. 
.friday night...northwest winds 5 to 15 knots. rain showers in
the evening, then a chance of rain showers overnight. waves
2 feet or less. 
.saturday...northwest winds 5 to 15 knots becoming south less
than 10 knots. waves 2 feet or less. 
.sunday...southeast winds 5 to 15 knots becoming south and
increasing to 30 knots. a chance of rain showers. waves 2 feet or
less building to 4 to 7 feet. waves occasionally around 9 feet. 
.monday...southwest winds 15 to 25 knots. showers likely. waves
5 to 8 feet subsiding to 3 to 6 feet. waves occasionally around
10 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
340 pm edt thu apr 9 2026

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 cold front will drop southward towards lake erie this evening
and tonight with a wave of low pressure 30.00 inches friday, and
then finally passing south late friday into friday night. high
pressure 30.60 inches builds over the lake saturday, then exits
east saturday night. a warm front pushes northeastward across the
lake sunday night and will become stationary north of lake erie
through midweek.



lez061-168-169-100215-
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-
340 pm edt thu apr 9 2026

.tonight...south winds 5 to 10 knots. a chance of showers with a
slight chance of thunderstorms through the early overnight, then
a chance of showers late. waves 1 to 3 feet. 
.friday...southeast winds 5 to 10 knots becoming west. a slight
chance of rain showers early, then a chance of rain showers late
in the morning. rain showers in the afternoon. waves 1 to 2 feet.
.friday night...north winds 10 knots or less. waves 1 to 2 feet. 
.saturday...north winds 10 knots or less becoming west. waves
1 foot or less. 
.saturday night...light and variable winds. waves 1 foot or less.
.sunday...southeast winds 5 to 10 knots becoming southwest and
increasing to 15 to 20 knots. waves 1 to 3 feet building to 3 to
5 feet. 
.monday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers. waves 3 to 6 feet subsiding to
2 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots. a chance of showers
and thunderstorms during the day, then showers likely tuesday
night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$