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open lake forecast for lake ontario
national weather service buffalo ny
348 am edt sat apr 20 2024

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 30.5 inch high will move from the canadian rockies 
to the northern plains today through tonight. the large high will
continue to push south to the lower mississippi valley by late 
sunday. the high will be centered over the ohio valley on monday. 
this high will slip to the east tuesday, while a 29.6 inch surface
low deepens across the western great lakes, with a warm front 
extending towards the lake tuesday night. the low will likely move
through the region wednesday. 


loz063>065-201530-
lake ontario open waters from hamlin beach to the saint lawrence
river-
348 am edt sat apr 20 2024

.today...southwest winds 10 to 15 knots becoming west and
increasing to 15 to 25 knots. waves 1 to 2 feet building to 5 to
8 feet. waves occasionally around 10 feet. 
.tonight...west winds 15 to 25 knots. waves 5 to 8 feet subsiding
to 2 to 4 feet. waves occasionally around 10 feet. 
.sunday...west winds 15 to 20 knots. waves 2 to 4 feet building
to 3 to 5 feet. 
.sunday night...southwest winds 15 to 20 knots becoming northwest
10 to 15 knots. waves 3 to 6 feet. 
.monday...northwest winds 10 to 15 knots becoming south 15 to
20 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest. a
chance of rain showers during the day, then rain showers tuesday
night. waves 2 to 4 feet. 
.wednesday...southwest winds 15 to 20 knots becoming northwest.
rain showers during the day, then a chance of rain showers
wednesday night. waves 3 to 6 feet building to 4 to 7 feet, then
subsiding to 3 to 6 feet. waves occasionally around 9 feet. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
348 am edt sat apr 20 2024


slz022-024-201515-
saint lawrence river from cape vincent to saint regis
348 am edt sat apr 20 2024

.today...southwest winds 5 to 15 knots becoming west 15 to
20 knots. scattered rain showers this afternoon. 
.tonight...southwest winds 5 to 15 knots. scattered rain showers
early. 
.sunday...southwest winds 5 to 15 knots increasing to 15 to
20 knots. partly to mostly sunny. 
.sunday night...southwest winds 15 to 20 knots becoming northwest
5 to 15 knots. a chance of sprinkles overnight. 
.monday...northwest winds 5 to 15 knots becoming south. mainly
clear, then becoming partly cloudy. 
.tuesday...south winds 10 to 15 knots becoming southwest. a
chance of rain showers during the day, then rain showers tuesday
night. 
.wednesday...southwest winds 10 to 15 knots becoming northwest.
rain showers during the day, then a chance of rain and snow
showers wednesday night. 

$$