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open lake forecast for lake ontario
national weather service buffalo ny
402 am est sun jan 4 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 surface trough will pass across the lake this morning. 
a 30.2 inch high will then slide from the western great lakes today 
to the lower great lakes by early monday, before drifting off the 
east coast monday night. a weak 29.6 inch low will then cross the 
lower great lakes tuesday night before moving off the new england 
coast wednesday. a 30.1 inch high will then proceed to build from 
the ohio valley wednesday to the mid atlantic thursday.


loz063>065-041600-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am est sun jan 4 2026

.today...north winds 10 to 15 knots becoming northwest 15 to
20 knots. lake effect snow showers likely this morning, then a
chance of snow showers this afternoon. waves 1 to 3 feet building
to 2 to 4 feet. 
.tonight...northwest winds 15 to 20 knots becoming southeast 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.monday...southeast winds 10 to 15 knots becoming south. snow.
waves 2 feet or less. 
.monday night...south winds 5 to 10 knots becoming southeast. a
chance of snow showers in the evening. waves 2 feet or less. 
.tuesday...southeast winds 5 to 15 knots becoming south 15 to
20 knots. a chance of rain showers during the day, then rain
showers likely tuesday night. waves 1 to 3 feet. 
.wednesday...west winds 15 to 20 knots diminishing to 10 to
15 knots. rain showers likely during the day. waves 2 to 4 feet
building to 3 to 5 feet, then subsiding to 1 to 3 feet. 
.thursday...southwest winds 5 to 15 knots becoming south 15 to
20 knots. a chance of rain showers thursday night. waves 1 to
3 feet building to 2 to 4 feet. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 am est sun jan 4 2026


slz022-024-041600-
saint lawrence river from cape vincent to saint regis
402 am est sun jan 4 2026

.today...north winds 10 knots or less becoming northwest. partly
to mostly sunny. 
.tonight...northwest winds less than 10 knots. partly to mostly
cloudy. 
.monday...light and variable winds. a chance of snow showers in
the morning, then snow in the afternoon. 
.monday night...northeast winds less than 10 knots. snow in the
evening. 
.tuesday...northeast winds 10 knots or less becoming southeast. a
chance of snow showers during the day, then snow showers and
freezing rain likely tuesday night. 
.wednesday...southwest winds 10 knots or less. snow showers
likely with a chance of rain showers during the day. 
.thursday...southwest winds 10 knots or less becoming south. a
chance of rain and snow showers thursday night. 

$$