fzus61 kbuf 111403
glflo 
expires:202603112100;;016372

open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt wed mar 11 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...low pressure will deepen to 29.2 inches as it moves from 
lake huron this evening to southern quebec overnight before reaching 
the canadian maritimes thursday evening. a ridge of high pressure 
averaging 30.1 inches will then build into the ohio valley and lower 
great lakes thursday afternoon and evening before drifting to the 
eastern seaboard friday. a 29.0 inch low will then move from the 
upper great lakes friday morning to the ottawa valley friday night 
while weakening to 29.4 inches. this low will continue east to the 
canadian maritimes saturday as a 30.3 inch high builds into the 
lower great lakes.


loz062-112100-
lake ontario open waters from the niagara river to hamlin beach-
1003 am edt wed mar 11 2026

...gale warning in effect from this evening through thursday
morning...

.this afternoon...east winds 10 to 15 knots becoming southeast
15 to 20 knots. rain and scattered thunderstorms. waves 3 to
6 feet subsiding to 2 to 4 feet. 
.tonight...southwest winds 15 to 25 knots becoming west and
increasing to 35 knot gales after midnight. a chance of rain
showers through the early overnight. waves 3 to 5 feet building
to 10 to 14 feet. waves occasionally around 18 feet. 
.thursday...west gales to 35 knots diminishing to 30 knots. waves
10 to 14 feet subsiding to 6 to 9 feet. waves occasionally around
18 feet. 
.thursday night...west winds 15 to 25 knots becoming southwest
and diminishing to 10 to 15 knots. waves 5 to 8 feet subsiding to
2 to 4 feet. waves occasionally around 10 feet. 
.friday...southeast winds to 30 knots becoming west and
increasing to 35 knot gales. rain and snow during the day, then
rain likely with a chance of snow showers friday night. waves
3 to 6 feet building to 10 to 15 feet. waves occasionally around
19 feet. 
.saturday...west gales to 35 knots becoming northeast and
diminishing to 15 to 20 knots. a chance of snow showers saturday
night. waves 10 to 14 feet subsiding to 1 to 3 feet. waves
occasionally around 18 feet. 
.sunday...east winds 15 to 25 knots becoming south and increasing
to 35 knot gales. snow and rain showers. waves 3 to 5 feet
building to 10 to 14 feet. waves occasionally around 18 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 111403
glflo 
expires:202603112100;;016373

open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt wed mar 11 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...low pressure will deepen to 29.2 inches as it moves from 
lake huron this evening to southern quebec overnight before reaching 
the canadian maritimes thursday evening. a ridge of high pressure 
averaging 30.1 inches will then build into the ohio valley and lower 
great lakes thursday afternoon and evening before drifting to the 
eastern seaboard friday. a 29.0 inch low will then move from the 
upper great lakes friday morning to the ottawa valley friday night 
while weakening to 29.4 inches. this low will continue east to the 
canadian maritimes saturday as a 30.3 inch high builds into the 
lower great lakes.


loz063>065-112100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 am edt wed mar 11 2026

...gale warning in effect from this evening through thursday
morning...

.this afternoon...southeast winds 15 to 20 knots. rain and
scattered thunderstorms. waves 3 to 5 feet subsiding to 2 to
4 feet. 
.tonight...southwest winds 15 to 25 knots becoming west and
increasing to 35 knot gales after midnight. rain showers with a
chance of thunderstorms early, then rain showers likely late in
the evening. a chance of rain showers after midnight. waves 2 to
4 feet building to 13 to 17 feet. waves occasionally around
22 feet. 
.thursday...west gales to 35 knots diminishing to 30 knots. waves
12 to 17 feet subsiding to 10 to 14 feet. waves occasionally
around 22 feet. 
.thursday night...west winds to 30 knots diminishing to 10 to
15 knots overnight. waves 9 to 12 feet subsiding to 3 to 5 feet.
waves occasionally around 15 feet. 
.friday...south winds 15 to 25 knots becoming west and increasing
to 40 knot gales. rain and snow during the day, then snow showers
likely with rain friday night. waves 3 to 5 feet building to
14 to 18 feet. waves occasionally around 23 feet. 
.saturday...west gales to 40 knots becoming north and diminishing
to 10 to 15 knots. a chance of snow showers. waves 14 to 18 feet
subsiding to 2 to 4 feet. waves occasionally around 23 feet. 
.sunday...east winds 15 to 25 knots becoming south and increasing
to 40 knot gales. rain showers with snow showers likely. waves
3 to 5 feet building to 9 to 12 feet. waves occasionally around
15 feet. 

winds and waves higher in and near thunderstorms.

$$