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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt mon jun 1 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 30.4 inch high centered over hudson bay today will 
build south across the entire great lakes region tuesday and 
wednesday, then towards the lower great lakes and ohio valley by 
thursday, before settling off the mid-atlantic and carolina 
coastline by friday.


loz063>065-011500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt mon jun 1 2026

.today...north winds 5 to 10 knots. waves 1 foot or less. 
.tonight...north winds 10 knots or less becoming west. waves
1 foot or less. 
.tuesday...west winds 10 knots or less. waves 1 foot or less. 
.tuesday night...west winds 10 knots or less. waves 1 foot or
less. 
.wednesday...west winds 5 to 10 knots becoming southwest. waves
1 foot or less. 
.thursday...southwest winds 5 to 10 knots. waves 2 feet or less. 
.friday...southwest winds 5 to 10 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
403 am edt mon jun 1 2026


slz022-024-011500-
saint lawrence river from cape vincent to saint regis
403 am edt mon jun 1 2026

.today...northeast winds 10 knots or less. sunny.
.tonight...north winds less than 10 knots. mainly clear. 
.tuesday...light and variable winds becoming north 5 to 10 knots.
mostly sunny. 
.tuesday night...northwest winds less than 10 knots. partly
cloudy. 
.wednesday...light and variable winds. mainly clear. 
.thursday...southwest winds 5 to 10 knots. mainly clear, then
becoming partly cloudy. 
.friday...southwest winds 10 knots or less. mostly cloudy. 

$$