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open lake forecast for lake ontario
national weather service buffalo ny
437 am est sun jan 18 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 29.6 inch low will move from near lake superior 
tonight to central quebec by later monday night, while pushing an 
arctic cold front across the lake monday afternoon. a 30.5 inch high 
will then slide east across the southeastern states tuesday and 
tuesday night, with a 29.8 inch low then making its way across the 
central great lakes wednesday, then into central quebec thursday.


loz062-181600-
lake ontario open waters from the niagara river to hamlin beach-
437 am est sun jan 18 2026

...gale warning in effect from monday morning through late
tuesday night...
...heavy freezing spray warning in effect from monday morning
through late tuesday night...

.today...southwest winds 15 to 25 knots. a chance of snow showers
early. a chance of snow showers late. waves 5 to 9 feet subsiding
to 3 to 6 feet. waves occasionally around 11 feet. 
.tonight...southwest winds 15 to 20 knots. a chance of snow
showers in the evening, then lake effect snow showers after
midnight. waves 3 to 5 feet. 
.monday...southwest winds to 30 knots becoming west and
increasing to 40 knot gales in the afternoon. heavy freezing
spray. lake effect snow showers likely. waves 3 to 6 feet
building to 12 to 16 feet. waves occasionally around 20 feet. 
.monday night...west gales to 40 knots diminishing to 30 knots.
heavy freezing spray. lake effect snow showers. waves 11 to
16 feet subsiding to 10 to 13 feet. waves occasionally around
20 feet. 
.tuesday...west gales to 35 knots becoming southwest and
diminishing to 30 knots. heavy freezing spray. lake effect snow
showers. waves 9 to 13 feet subsiding to 7 to 10 feet. waves
occasionally around 16 feet. 
.wednesday...southwest winds to 30 knots becoming west and
increasing to 35 knot gales. snow showers likely. waves 4 to
7 feet building to 9 to 13 feet. waves occasionally around
16 feet. 
.thursday...west gales to 35 knots diminishing to 30 knots. a
chance of snow showers. waves 9 to 13 feet subsiding to 7 to
10 feet. waves occasionally around 16 feet. 

$$

fzus61 kbuf 180937
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open lake forecast for lake ontario
national weather service buffalo ny
437 am est sun jan 18 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 29.6 inch low will move from near lake superior 
tonight to central quebec by later monday night, while pushing an 
arctic cold front across the lake monday afternoon. a 30.5 inch high 
will then slide east across the southeastern states tuesday and 
tuesday night, with a 29.8 inch low then making its way across the 
central great lakes wednesday, then into central quebec thursday.


loz063>065-181600-
lake ontario open waters from hamlin beach to the saint lawrence
river-
437 am est sun jan 18 2026

...gale warning in effect from monday morning through late
tuesday night...
...heavy freezing spray warning in effect from monday morning
through late tuesday night...

.today...southwest winds to 30 knots diminishing to 15 to
25 knots. a chance of snow showers through early afternoon, then
snow showers likely late. waves 6 to 10 feet subsiding to 3 to
6 feet. waves occasionally around 13 feet. 
.tonight...southwest winds 15 to 25 knots. a chance of snow
showers through the early overnight, then lake effect snow
showers likely late. waves 3 to 6 feet. 
.monday...southwest winds to 30 knots increasing to 40 knot gales
in the afternoon. heavy freezing spray. lake effect snow showers
likely. waves 4 to 7 feet building to 13 to 17 feet. waves
occasionally around 22 feet. 
.monday night...west gales to 40 knots diminishing to 30 knots.
heavy freezing spray. lake effect snow showers. waves 15 to
20 feet subsiding to 12 to 16 feet. waves occasionally around
26 feet. 
.tuesday...west gales to 35 knots becoming southwest and
diminishing to 30 knots. heavy freezing spray. lake effect snow
showers. waves 10 to 15 feet subsiding to 8 to 11 feet. waves
occasionally around 19 feet. 
.wednesday...south winds to 30 knots becoming southwest and
increasing to 35 knot gales. snow showers likely. waves 5 to
9 feet building to 10 to 15 feet. waves occasionally around
19 feet. 
.thursday...west gales to 35 knots diminishing to 30 knots. a
chance of snow showers. waves 10 to 15 feet subsiding to 9 to
12 feet. waves occasionally around 19 feet. 

$$