fzus61 kbuf 122003
glflo 
expires:202603130300;;561684

open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt thu mar 12 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 30.1 inch high will build into the ohio valley and 
lower great lakes this 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. a 30.3 inch high will then ridge across the lake 
saturday night, before moving east of the lake sunday. meanwhile, a 
29.5 inch surface low over the mid mississippi valley sunday morning 
will track northeastward and deepen to 28.9 inches just to the west 
of the lake monday morning, before pushing northeastward across 
quebec through the remainder of monday and tuesday. this low will 
sweep a strong cold front across the lake monday afternoon, with a 
30.3 inch high then building across the great lakes and ohio valley 
tuesday.


loz062-130300-
lake ontario open waters from the niagara river to hamlin beach-
403 pm edt thu mar 12 2026

...gale warning in effect from friday afternoon through saturday
morning...

.tonight...northwest winds 15 to 20 knots becoming southwest 5 to
15 knots. waves 3 to 6 feet subsiding to 1 to 2 feet. 
.friday...southeast winds 10 to 15 knots becoming southwest and
increasing to 35 knot gales in the afternoon. snow in the
morning, then rain and snow in the afternoon. waves 1 to 2 feet
building to 8 to 11 feet. waves occasionally around 14 feet. 
.friday night...southwest gales to 40 knots becoming west to
35 knots. a chance of rain and snow showers. waves 11 to 16 feet
subsiding to 10 to 15 feet. waves occasionally around 20 feet. 
.saturday...west gales to 35 knots diminishing to 15 to 25 knots.
a chance of snow showers in the morning. waves 11 to 15 feet
subsiding to 4 to 7 feet. waves occasionally around 19 feet. 
.saturday night...west winds 15 to 20 knots becoming east 5 to
15 knots. a chance of snow showers overnight. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.sunday...east winds 15 to 25 knots becoming southeast to
30 knots. snow showers with a chance of rain showers during the
day, then a chance of rain and snow showers sunday night. waves
3 to 5 feet building to 5 to 9 feet. waves occasionally around
11 feet. 
.monday...south winds to 30 knots becoming west and increasing to
40 knot gales. rain showers during the day, then rain showers
with a chance of snow showers monday night. waves 5 to 8 feet
building to 12 to 17 feet. waves occasionally around 22 feet. 
.tuesday...west gales to 35 knots diminishing to 15 to 25 knots.
a chance of snow showers. waves 10 to 15 feet subsiding to 6 to
9 feet. waves occasionally around 19 feet. 

$$

fzus61 kbuf 122003
glflo 
expires:202603130300;;561685

open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt thu mar 12 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 30.1 inch high will build into the ohio valley and 
lower great lakes this 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. a 30.3 inch high will then ridge across the lake 
saturday night, before moving east of the lake sunday. meanwhile, a 
29.5 inch surface low over the mid mississippi valley sunday morning 
will track northeastward and deepen to 28.9 inches just to the west 
of the lake monday morning, before pushing northeastward across 
quebec through the remainder of monday and tuesday. this low will 
sweep a strong cold front across the lake monday afternoon, with a 
30.3 inch high then building across the great lakes and ohio valley 
tuesday.


loz063>065-130300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 pm edt thu mar 12 2026

...gale warning in effect from friday afternoon through saturday
afternoon...

.tonight...northwest winds to 30 knots becoming west and
diminishing to 5 to 10 knots. waves 6 to 10 feet subsiding to
2 to 4 feet. waves occasionally around 13 feet. 
.friday...south winds 10 to 15 knots increasing to 30 knots in
the afternoon. snow. rain and snow late. waves 2 feet or less
building to 5 to 8 feet. waves occasionally around 10 feet. 
.friday night...southwest gales to 35 knots becoming west. rain
and snow. waves 9 to 13 feet building to 12 to 16 feet. waves
occasionally around 20 feet. 
.saturday...west gales to 40 knots diminishing to 30 knots. snow
likely in the morning, then a chance of snow showers in the
afternoon. waves 14 to 18 feet subsiding to 9 to 12 feet. waves
occasionally around 23 feet. 
.saturday night...west winds 15 to 25 knots becoming northeast
and diminishing to 5 to 15 knots. waves 7 to 10 feet subsiding to
2 feet or less. waves occasionally around 13 feet. 
.sunday...east winds 15 to 25 knots becoming southeast and
increasing to 40 knot gales. snow showers with a chance of rain
showers. waves 2 to 4 feet building to 7 to 11 feet. waves
occasionally around 14 feet. 
.monday...southeast gales to 40 knots becoming west to 35 knots.
rain showers during the day, then rain showers with a chance of
snow showers monday night. waves 7 to 11 feet building to 12 to
17 feet. waves occasionally around 22 feet. 
.tuesday...west gales to 35 knots diminishing to 30 knots. waves
11 to 16 feet subsiding to 9 to 12 feet. waves occasionally
around 20 feet. 

$$

fzus61 kcle 121954
glfle 
expires:202603130215;;561299

open lake forecast for lake erie
national weather service cleveland oh
354 pm edt thu mar 12 2026

for waters beyond five nautical miles of shore on lake erie

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 ridge averaging 30.10 inches will shift east tonight. strong 
low pressure of 29.10 inches will move east through the great 
lakes on friday, extending a cold front across the lake friday 
afternoon. high pressure 30.30 inches will enter the region on 
saturday. a warm front will lift north across the lake on sunday
night ahead of strong low pressure of 29.10 inches that will wrap 
a cold front east across the lake on monday.


lez061-168-169-130215-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
354 pm edt thu mar 12 2026

...gale warning in effect from friday afternoon through late
friday night...

.tonight...west winds 5 to 15 knots becoming south. waves in ice
free areas 1 to 3 feet. 
.friday...south winds 15 to 25 knots becoming southwest and
increasing to 35 knot gales in the afternoon. snow showers likely
with a slight chance of rain showers in the morning, then a
chance of rain and snow showers likely in the afternoon. waves
1 to 3 feet building to 10 to 13 feet. waves occasionally around
16 feet. 
.friday night...southwest gales to 35 knots becoming west and
diminishing to 30 knots overnight. a chance of snow showers in
the evening. waves 9 to 13 feet subsiding to 7 to 10 feet. waves
occasionally around 16 feet. 
.saturday...west winds 15 to 25 knots diminishing to 10 to
15 knots. waves 5 to 8 feet subsiding to 1 to 3 feet. waves
occasionally around 10 feet. 
.saturday night...southwest winds 10 knots or less becoming east
10 to 15 knots. a chance of snow showers overnight. waves 2 feet
or less. 
.sunday...east winds 15 to 20 knots becoming south and increasing
to 30 knots. a chance of rain and snow showers during the day,
then a chance of rain sunday night. waves 1 to 3 feet building to
3 to 6 feet. 
.monday...south winds to 30 knots becoming west and increasing to
35 knot gales. rain with a chance of snow during the day, then a
chance of snow monday night. waves 4 to 7 feet building to 8 to
12 feet. waves occasionally around 15 feet. 
.tuesday...west winds to 30 knots diminishing to 10 to 15 knots.
a chance of snow during the day. waves 6 to 9 feet subsiding to
2 to 4 feet. waves occasionally around 11 feet. 

wave heights are for ice free areas.

$$