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ON- Lake Ontario

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fzus61 kbuf 092003
glfsl 
expires:202610100300;;813092

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


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

.tonight...northwest winds 5 to 10 knots becoming light and
variable. partly cloudy early, then becoming mainly clear. 
.saturday...light and variable winds. sunny.
.saturday night...east winds 10 knots or less becoming south.
partly cloudy in the evening, then becoming mostly cloudy. 
.sunday...south winds 5 to 10 knots. rain likely in the
afternoon. 
.sunday night...south winds less than 10 knots. rain.
.monday...light and variable winds becoming southwest 5 to
10 knots. showers likely monday night. 
.tuesday...southwest winds 5 to 10 knots becoming north. showers
likely. 
.wednesday...north winds 10 knots or less. mostly cloudy, then
clearing. 

$$
fzus61 kbuf 092002
glflo 
expires:202610100300;;813069

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt fri oct 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 high pressure ridge averaging 30.1 inches exits slowly 
eastward tonight through sunday before a weak trough averaging 29.8 
inches slides eastward across the lake sunday night. behind the 
trough, a weak ridge averaging 29.9 inches slides eastward across 
the lake on monday, exits eastward monday night, and is followed by 
a cold front sweeping southeastward across the lake on tuesday. 
behind the cold front, a ridge averaging 30.0 inches builds from 
northern ontario and vicinity through this wednesday.


loz062-100300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt fri oct 9 2026

.tonight...northwest winds 5 to 15 knots becoming east. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.saturday...southeast winds 5 to 15 knots becoming east 15 to
20 knots. waves 1 to 3 feet. 
.saturday night...east winds 15 to 20 knots becoming southeast
5 to 15 knots. waves 1 to 3 feet. 
.sunday...southeast winds 5 to 15 knots becoming east. rain.
waves 1 to 2 feet. 
.sunday night...east winds 5 to 15 knots becoming northeast less
than 10 knots. rain. waves 2 feet or less. 
.monday...northwest winds 10 knots or less becoming southwest and
increasing to 15 to 20 knots. showers likely monday night. waves
1 foot or less building to 1 to 3 feet. 
.tuesday...west winds 15 to 20 knots becoming north 10 to
15 knots. showers likely during the day, then a chance of showers
tuesday night. waves 2 to 4 feet. 
.wednesday...north winds 5 to 15 knots becoming northeast. waves
1 to 3 feet. 

$$
fzus61 kbuf 092002
glflo 
expires:202610100300;;813070

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt fri oct 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 high pressure ridge averaging 30.1 inches exits slowly 
eastward tonight through sunday before a weak trough averaging 29.8 
inches slides eastward across the lake sunday night. behind the 
trough, a weak ridge averaging 29.9 inches slides eastward across 
the lake on monday, exits eastward monday night, and is followed by 
a cold front sweeping southeastward across the lake on tuesday. 
behind the cold front, a ridge averaging 30.0 inches builds from 
northern ontario and vicinity through this wednesday.


loz063>065-100300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt fri oct 9 2026

.tonight...northwest winds 15 to 20 knots becoming east 5 to
15 knots. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.saturday...east winds 5 to 15 knots. waves 2 feet or less. 
.saturday night...east winds 10 to 15 knots becoming southeast
15 to 20 knots. waves 1 to 3 feet. 
.sunday...southeast winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of rain in the morning, then rain in the
afternoon. waves 1 to 3 feet. 
.sunday night...southeast winds 5 to 15 knots. rain. waves 1 to
3 feet. 
.monday...north winds 10 knots or less becoming southwest and
increasing to 15 to 20 knots. showers likely monday night. waves
1 to 3 feet. 
.tuesday...west winds 15 to 20 knots becoming north. showers
likely. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.wednesday...north winds 15 to 20 knots becoming northeast 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 

$$
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