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open lake forecast for lake ontario
national weather service buffalo ny
1004 pm edt mon mar 16 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 29.1 inch surface low over central michigan this late 
morning will track northeastward west of the lake this 
afternoon, before pushing northeastward across quebec through 
tuesday. this low will sweep a strong cold front across the lake 
late this afternoon, with a 30.4 inch high building across the great 
lakes and ohio valley tuesday. the high will then shift east of the 
lake wednesday and reach the east coast by wednesday evening. a 30.2 
inch high will move into the great lakes region thursday. a 29.8 
inch low will move from james bay to the canadian maritimes friday. 
this may result in a cold front crossing the lake through friday.


loz063>065-170900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1004 pm edt mon mar 16 2026

...gale warning in effect through tuesday evening...

.overnight...west winds to 30 knots becoming southwest and
increasing to 40 knot gales. snow, then a chance of snow showers
late. visibility one quarter mile or less at times late. waves
8 to 11 feet building to 13 to 17 feet. waves occasionally around
22 feet. 
.tuesday...west gales to 40 knots diminishing to 30 knots in the
afternoon. lake effect snow showers. visibility one quarter mile
or less at times in the morning. waves 15 to 20 feet subsiding to
12 to 16 feet. waves occasionally around 26 feet. 
.tuesday night...west winds to 30 knots becoming northwest and
diminishing to 15 to 20 knots. lake effect snow showers in the
evening, then a chance of lake effect snow showers overnight.
waves 10 to 14 feet subsiding to 4 to 7 feet. waves occasionally
around 18 feet. 
.wednesday...northwest winds 5 to 10 knots becoming south. snow
showers likely. waves 2 to 4 feet subsiding to 1 foot or less. 
.wednesday night...southeast winds 5 to 15 knots becoming south
15 to 20 knots. waves 2 feet or less building to 2 to 4 feet. 
.thursday...south winds 15 to 20 knots becoming west 10 to
15 knots. a chance of rain showers during the day, then a chance
of rain and snow showers thursday night. waves 2 to 4 feet
building to 3 to 5 feet. 
.friday...west winds 15 to 25 knots becoming north. a chance of
rain and snow showers. waves 3 to 5 feet building to 3 to 6 feet.
.saturday...northeast winds to 30 knots becoming west. a chance
of rain and snow showers. waves 5 to 8 feet building to 6 to
9 feet. waves occasionally around 11 feet. 

$$