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open lake forecast for lake ontario
national weather service buffalo ny
1001 am edt sun may 11 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 30.4 inch high will build across the lower great lakes 
this afternoon before moving off the southern new england coast 
monday, and then farther offshore east of the mid atlantic by 
tuesday. a broad, weak 29.8 inch low will then move into the ohio 
valley tuesday, before drifting towards the mid atlantic coast by 
wednesday. a 29.7 inch trough of low pressure will then cross the 
lake on thursday.


loz062-112100-
lake ontario open waters from the niagara river to hamlin beach-
1001 am edt sun may 11 2025

.this afternoon...northeast winds 5 to 15 knots becoming east.
waves 2 to 3 feet subsiding to 2 feet or less. 
.tonight...east winds 5 to 10 knots. waves 1 foot or less. 
.monday...east winds 10 knots or less. waves 1 foot or less. 
.monday night...east winds 5 to 10 knots. waves 1 foot or less. 
.tuesday...east winds 5 to 15 knots. a chance of showers. waves
1 foot or less building to 1 to 3 feet. 
.wednesday...east winds 10 to 15 knots. a chance of showers
during the day. waves 1 to 3 feet. 
.thursday...east winds around 10 knots becoming southeast. a
chance of showers thursday night. waves 1 to 2 feet. 

$$

fzus61 kbuf 111401
glflo 
expires:202505112100;;334372

open lake forecast for lake ontario
national weather service buffalo ny
1001 am edt sun may 11 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 30.4 inch high will build across the lower great lakes 
this afternoon before moving off the southern new england coast 
monday, and then farther offshore east of the mid atlantic by 
tuesday. a broad, weak 29.8 inch low will then move into the ohio 
valley tuesday, before drifting towards the mid atlantic coast by 
wednesday. a 29.7 inch trough of low pressure will then cross the 
lake on thursday.


loz063>065-112100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1001 am edt sun may 11 2025

.this afternoon...north winds 5 to 15 knots becoming west. waves
2 to 4 feet subsiding to 1 foot or less. 
.tonight...southwest winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.monday...southeast winds 5 to 10 knots becoming northeast. waves
1 foot or less. 
.monday night...east winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.tuesday...southeast winds 5 to 15 knots. a chance of showers
tuesday night. waves 2 feet or less. 
.wednesday...southeast winds 10 to 15 knots. a chance of showers
during the day. waves 1 to 3 feet. 
.thursday...southeast winds 5 to 15 knots. waves 2 feet or less. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1001 am edt sun may 11 2025


slz022-024-112100-
saint lawrence river from cape vincent to saint regis
1001 am edt sun may 11 2025

.this afternoon...north winds 10 knots or less becoming northwest.
sunny.
.tonight...southwest winds less than 10 knots. mainly clear in
the evening, then becoming partly cloudy. 
.monday...south winds 10 knots or less becoming southwest. sunny.
.monday night...southwest winds 10 knots or less becoming east.
mainly clear in the evening, then becoming partly cloudy. 
.tuesday...east winds less than 10 knots becoming southeast.
mostly cloudy. 
.wednesday...southeast winds less than 10 knots. mostly cloudy. 
.thursday...southeast winds 10 knots or less becoming south. a
chance of showers. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
1006 am edt sun may 11 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... 
high pressure 30.50 inches builds over the lake today before 
exiting to the east on monday. low pressure 29.80 inches moves 
east across the lower mississippi valley into the tennessee valley
while a trough averaging 29.90 inches lingers across lake erie 
through wednesday.


lez061-168-169-112045-
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-
1006 am edt sun may 11 2025

.this afternoon...northeast winds 15 to 20 knots diminishing to
10 to 15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tonight...northeast winds 5 to 15 knots becoming east. waves
1 to 3 feet subsiding to 1 foot or less. 
.monday...southeast winds 10 knots or less becoming east. waves
1 foot or less. 
.monday night...east winds 5 to 10 knots becoming southeast. a
chance of showers. waves 1 foot or less. 
.tuesday...east winds 5 to 10 knots becoming southeast. a chance
of showers. waves 2 feet or less. 
.wednesday...east winds 5 to 10 knots. a chance of showers during
the day. waves 2 feet or less. 
.thursday...east winds 5 to 10 knots becoming south. a chance of
showers thursday night. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$