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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sun may 10 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 weak 29.5 inch low will move from the upper great 
lakes tonight to western quebec by early sunday before moving to 
northern quebec early monday. meanwhile, a trailing cold front will 
cross the lake tonight. a 30.4 inch high will then build from the 
upper great lakes monday to the lower great lakes by tuesday. a 29.8 
inch low will move across the lower great lakes into the ohio valley 
wednesday.


loz062-101500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt sun may 10 2026

.today...west winds 10 to 15 knots. waves 1 to 2 feet. 
.tonight...west winds 5 to 10 knots becoming northwest. waves
1 to 2 feet. 
.monday...northwest winds 5 to 10 knots becoming west. waves
2 feet or less. 
.monday night...west winds 5 to 10 knots becoming northwest.
waves 2 feet or less. 
.tuesday...west winds 10 knots or less becoming southeast and
increasing to 15 to 20 knots. rain showers tuesday night. waves
2 feet or less. 
.wednesday...south winds 15 to 20 knots becoming west 10 to
15 knots. showers. waves 1 to 3 feet. 
.thursday...northwest winds 5 to 10 knots. a chance of showers
during the day. waves 1 to 2 feet. 

$$

fzus61 kbuf 100802
glflo 
expires:202605101500;;315992

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sun may 10 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 weak 29.5 inch low will move from the upper great 
lakes tonight to western quebec by early sunday before moving to 
northern quebec early monday. meanwhile, a trailing cold front will 
cross the lake tonight. a 30.4 inch high will then build from the 
upper great lakes monday to the lower great lakes by tuesday. a 29.8 
inch low will move across the lower great lakes into the ohio valley 
wednesday.


loz063>065-101500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt sun may 10 2026

.today...west winds 10 to 15 knots increasing to 15 to 20 knots.
waves 1 to 3 feet building to 2 to 4 feet. 
.tonight...west winds 15 to 20 knots becoming northwest 5 to
15 knots. waves 2 to 4 feet subsiding to 1 foot or less. 
.monday...west winds 5 to 15 knots. waves 1 to 3 feet. 
.monday night...west winds 5 to 15 knots becoming northwest.
waves 1 to 3 feet. 
.tuesday...northwest winds 5 to 10 knots becoming southeast and
increasing to 15 to 20 knots. rain showers tuesday night. waves
2 feet or less. 
.wednesday...southeast winds 15 to 20 knots becoming southwest
10 to 15 knots. showers. waves 1 to 3 feet. 
.thursday...west winds 5 to 15 knots becoming northwest. a chance
of showers. waves 2 feet or less. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
338 am edt sun may 10 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 ridge averaging 30.10 inches affects lake erie as the embedded 
high pressure center moves from the canadian prairies to atlantic 
waters near the mid-atlantic states through tuesday. the ridge exits 
generally eastward tuesday night through wednesday night as a low of 
29.70 inches wobbles east-southeastward from the northwestern great 
lakes toward lake ontario. this low track should allow a warm front 
to sweep northward across lake erie tuesday night and a cold front 
to sweep eastward across the lake on wednesday through wednesday 
night. behind the cold front, another high pressure ridge averaging 
30.10 inches should build from the western great lakes through 
thursday. 


lez061-168-169-101415-
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-
338 am edt sun may 10 2026

.today...northwest winds 10 knots or less becoming southwest.
waves 2 feet or less. 
.tonight...southwest winds 10 knots or less becoming northwest.
waves 1 foot or less. 
.monday...north winds 5 to 10 knots becoming west. waves 1 foot
or less. 
.monday night...west winds 10 knots or less becoming northeast.
waves 2 feet or less. 
.tuesday...light and variable winds becoming south 15 to
20 knots. rain showers tuesday night. waves 1 foot or less
building to 2 to 4 feet. 
.wednesday...southwest winds 15 to 20 knots becoming northwest
10 to 15 knots. showers likely with a chance of thunderstorms
during the day, then a chance of showers wednesday night. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.thursday...northwest winds 5 to 15 knots becoming west less than
10 knots. waves 1 to 3 feet subsiding to 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$