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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt wed oct 28 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 ridge averaging 30.6 inches affects the lake through 
thursday as the embedded high pressure center wobbles southeastward 
from northern ontario to north atlantic waters southeast of the 
canadian maritimes. the ridge exits eastward thursday night as a 
cold front sweeps eastward across the lake. behind the front, 
another ridge averaging 30.2 inches builds from the western great 
lakes through this saturday. the high will drift eastward while a 
29.9 inch low is expected to move into the lower mississippi valley 
sunday.


loz063>065-290900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt wed oct 28 2026

.overnight...southeast winds 10 to 15 knots becoming south.
waves 1 to 3 feet. 
.thursday...south winds 10 to 15 knots becoming southwest 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.thursday night...southwest winds 15 to 20 knots becoming
northwest. showers likely in the evening, then a chance of
showers overnight. waves 3 to 5 feet. 
.friday...northwest winds 15 to 20 knots becoming west. waves
3 to 6 feet. 
.friday night...northwest winds 15 to 20 knots diminishing to
10 to 15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.saturday...northwest winds 10 knots or less becoming south.
waves 2 feet or less. 
.sunday...southeast winds 10 knots or less becoming south. waves
1 foot or less. 
.monday...southwest winds 10 knots or less becoming southeast.
waves 1 foot or less. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 pm edt wed oct 28 2026


slz022-024-290900-
saint lawrence river from cape vincent to saint regis
1003 pm edt wed oct 28 2026

.overnight...light and variable winds becoming south 5 to
10 knots. becoming mainly clear. 
.thursday...south winds 5 to 15 knots becoming southwest. mostly
sunny through early afternoon, then becoming mostly cloudy. 
.thursday night...southwest winds 5 to 15 knots becoming west. a
chance of showers in the evening. 
.friday...west winds 5 to 15 knots. partly sunny. 
.friday night...northwest winds 10 knots or less. partly cloudy. 
.saturday...light and variable winds. mainly clear. 
.sunday...southwest winds less than 10 knots. partly cloudy. 
.monday...southwest winds less than 10 knots. mostly cloudy. 

$$