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open lake forecast for lake ontario
national weather service buffalo ny
401 am edt fri may 23 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 weak 29.7 inch low will move slowly east across lake 
ontario today before dissipating this evening across northern new 
york. meanwhile, a 29.4 inch low will move northeast along the maine 
coast today before weakening to 29.7 inches as it reaches new 
brunswick saturday. this weak, remnant low will then move slowly 
east across the canadian maritimes sunday, then into the north 
atlantic monday. an expansive 30.4 inch high will then settle into 
the great lakes monday, and expand to southern new england by 
tuesday.


loz062-231500-
lake ontario open waters from the niagara river to hamlin beach-
401 am edt fri may 23 2025

.today...northwest winds 10 to 15 knots becoming west. rain.
waves 1 to 3 feet building to 2 to 4 feet. 
.tonight...west winds 10 to 15 knots. rain in the evening, then
scattered showers after midnight. waves 2 to 4 feet subsiding to
1 to 3 feet. 
.saturday...west winds 10 to 15 knots. a chance of showers in the
afternoon. waves 1 to 3 feet. 
.saturday night...west winds 10 to 15 knots. a chance of showers
in the evening. waves 2 to 3 feet. 
.sunday...west winds around 10 knots. waves 1 to 2 feet. 
.monday...west winds 5 to 10 knots becoming northeast. waves
1 foot or less. 
.tuesday...east winds 5 to 15 knots. a chance of showers tuesday
night. waves 2 feet or less. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
401 am edt fri may 23 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 weak 29.7 inch low will move slowly east across lake 
ontario today before dissipating this evening across northern new 
york. meanwhile, a 29.4 inch low will move northeast along the maine 
coast today before weakening to 29.7 inches as it reaches new 
brunswick saturday. this weak, remnant low will then move slowly 
east across the canadian maritimes sunday, then into the north 
atlantic monday. an expansive 30.4 inch high will then settle into 
the great lakes monday, and expand to southern new england by 
tuesday.


loz063>065-231500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
401 am edt fri may 23 2025

.today...east winds 10 to 15 knots becoming northwest. rain.
waves 1 to 3 feet. 
.tonight...west winds 5 to 15 knots. rain. waves 1 to 3 feet. 
.saturday...west winds 10 to 15 knots. a chance of showers. waves
1 to 3 feet. 
.saturday night...west winds 10 to 15 knots. a chance of showers.
waves 1 to 3 feet. 
.sunday...west winds 5 to 15 knots. waves 1 to 3 feet. 
.monday...west winds 5 to 10 knots becoming south. waves 2 feet
or less. 
.tuesday...southeast winds 5 to 10 knots. 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
401 am edt fri may 23 2025


slz022-024-231500-
saint lawrence river from cape vincent to saint regis
401 am edt fri may 23 2025

.today...east winds 5 to 10 knots becoming northeast. scattered
showers through early afternoon, then rain late. 
.tonight...north winds less than 10 knots becoming northwest.
rain.
.saturday...northwest winds 10 knots or less. a chance of showers
in the morning, then showers likely in the afternoon. 
.saturday night...northwest winds less than 10 knots becoming
west. showers likely in the evening. 
.sunday...northwest winds less than 10 knots. a chance of
showers. 
.monday...west winds less than 10 knots. a chance of showers. 
.tuesday...light and variable winds. partly to mostly cloudy. 

$$