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open lake forecast for lake ontario
national weather service buffalo ny
552 pm edt sat may 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 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.


loz062-100315-
lake ontario open waters from the niagara river to hamlin beach-
552 pm edt sat may 9 2026

...severe thunderstorm watch 195 in effect until 11 pm edt this
evening...

.tonight...southwest winds 10 to 15 knots becoming west. a chance
of showers this evening. waves 1 to 3 feet. 
.sunday...west winds 10 to 15 knots becoming southwest. waves
1 to 2 feet. 
.sunday night...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 10 to
15 knots. rain showers tuesday night. waves 2 feet or less. 
.wednesday...southeast winds 15 to 20 knots becoming north 10 to
15 knots. showers. waves 1 to 3 feet. 
.thursday...north winds 5 to 15 knots. a chance of showers during
the day. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 092152
glflo 
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open lake forecast for lake ontario
national weather service buffalo ny
552 pm edt sat may 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 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>065-100315-
lake ontario open waters from hamlin beach to the saint lawrence
river-
552 pm edt sat may 9 2026

.tonight...south winds 10 to 15 knots becoming west. showers this
evening, then a chance of showers after midnight. waves 1 to
3 feet building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.sunday...west winds 10 to 15 knots increasing to 15 to 20 knots.
waves 1 to 3 feet building to 2 to 4 feet. 
.sunday night...west winds 15 to 20 knots diminishing to 5 to
10 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 15 knots becoming southeast. rain
showers likely tuesday night. waves 2 feet or less. 
.wednesday...southeast winds 15 to 20 knots becoming south 10 to
15 knots. showers. waves 1 to 3 feet. 
.thursday...northwest winds 5 to 10 knots becoming north. a
chance of showers. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 pm edt sat may 9 2026


slz022-024-100300-
saint lawrence river from cape vincent to saint regis
403 pm edt sat may 9 2026

.tonight...south winds 5 to 15 knots becoming southwest. showers.
.sunday...southwest winds 5 to 15 knots. mostly sunny. 
.sunday night...southwest winds 5 to 15 knots diminishing to less
than 10 knots. becoming mainly clear. 
.monday...west winds 10 knots or less. a chance of rain showers
in the afternoon. 
.monday night...west winds 10 knots or less becoming northwest. a
chance of rain showers in the evening. 
.tuesday...northwest winds 10 knots or less becoming southeast.
mainly clear, then becoming mostly cloudy. 
.wednesday...southeast winds 5 to 10 knots. rain showers likely. 
.thursday...east winds 5 to 10 knots becoming light and variable.
a chance of showers. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
727 pm edt sat may 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...
low pressure 29.50 inches will extend a cold front across the 
area this evening. high pressure 30.20 inches will gradually build
southeast across the upper midwest into the great lakes sunday 
and persist through monday night. another low pressure system 
29.90 inches will move east through the lower great lakes late 
tuesday into wednesday.


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-
727 pm edt sat may 9 2026

.tonight...southwest winds 5 to 15 knots becoming northwest.
showers with a chance of thunderstorms early, then a chance of
showers with a slight chance of thunderstorms late this evening.
a slight chance of showers after midnight. waves 1 to 3 feet. 
.sunday...northwest winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.sunday night...west winds 10 knots or less becoming north. 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 1 to 3 feet. 
.wednesday...southwest winds 15 to 20 knots becoming northwest
10 to 15 knots. showers likely 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 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$