fzus61 kbuf 130809
glflo 
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open lake forecast for lake ontario
national weather service buffalo ny
409 am edt mon apr 13 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 29.3 inch low will move across northern quebec today, 
with a trailing weak trough crossing the lake. a 29.6 inch low will 
then move into the central great lakes tuesday morning before 
weakening across the saint lawrence valley tuesday night. another 
29.6 inch low will move into the central great lakes wednesday night 
before reaching southern quebec thursday night. a 30.0 inch high is 
then forecast to build from the central great lakes friday to the 
lower great lakes saturday.


loz062-131500-
lake ontario open waters from the niagara river to hamlin beach-
409 am edt mon apr 13 2026

.today...southwest winds 15 to 25 knots. showers this morning.
waves 2 to 4 feet building to 3 to 6 feet. 
.tonight...west winds 5 to 15 knots becoming southeast 10 knots
or less. a chance of showers late. waves 2 to 4 feet subsiding to
1 foot or less. 
.tuesday...east winds 5 to 10 knots becoming southwest and
increasing to 15 to 20 knots. showers with a chance of
thunderstorms. waves 2 feet or less building to 3 to 5 feet. 
.tuesday night...southwest winds 15 to 20 knots diminishing to
10 to 15 knots. showers likely with a chance of thunderstorms.
waves 3 to 5 feet subsiding to 1 to 2 feet. 
.wednesday...southwest winds 5 to 15 knots becoming south.
showers likely with a chance of thunderstorms. waves 1 to 2 feet.
.thursday...south winds 10 to 15 knots becoming southwest 15 to
20 knots. showers likely. waves 1 to 3 feet. 
.friday...west winds 5 to 15 knots becoming southeast. waves 1 to
3 feet subsiding to 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 130809
glflo 
expires:202604131500;;287298

open lake forecast for lake ontario
national weather service buffalo ny
409 am edt mon apr 13 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 29.3 inch low will move across northern quebec today, 
with a trailing weak trough crossing the lake. a 29.6 inch low will 
then move into the central great lakes tuesday morning before 
weakening across the saint lawrence valley tuesday night. another 
29.6 inch low will move into the central great lakes wednesday night 
before reaching southern quebec thursday night. a 30.0 inch high is 
then forecast to build from the central great lakes friday to the 
lower great lakes saturday.


loz063>065-131500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
409 am edt mon apr 13 2026

.today...south winds 15 to 20 knots becoming southwest. showers
through early afternoon. waves 3 to 5 feet. 
.tonight...west winds 15 to 20 knots becoming south and
diminishing to less than 10 knots after midnight. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.tuesday...southeast winds 5 to 15 knots becoming southwest.
showers in the morning, then showers with a chance of
thunderstorms in the afternoon. waves 1 to 3 feet. 
.tuesday night...southwest winds 15 to 20 knots diminishing to
5 to 15 knots. showers with a chance of thunderstorms. waves 1 to
3 feet. 
.wednesday...southwest winds 5 to 10 knots becoming south.
showers likely with a chance of thunderstorms during the day,
then showers likely wednesday night. waves 2 feet or less. 
.thursday...south winds 5 to 15 knots becoming southwest 15 to
20 knots. showers likely. waves 1 to 3 feet. 
.friday...west winds 15 to 20 knots becoming south and
diminishing to 10 knots or less. a chance of showers during the
day. waves 1 to 3 feet subsiding to 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 130852
glfle 
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open lake forecast for lake erie
national weather service cleveland oh
452 am edt mon apr 13 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 stalled frontal boundary lingers across the central great 
lakes through midweek. several waves of low pressure will track 
along this boundary including low pressure of 29.50 inches on 
thursday. a ridge averaging 30.00 inches will be over the lake on 
friday.


lez061-166>169-131415-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 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-
452 am edt mon apr 13 2026

.today...southwest winds 15 to 25 knots. a chance of showers
early, then a slight chance of showers late this morning. waves
4 to 7 feet subsiding to 3 to 6 feet. waves occasionally around
9 feet. 
.tonight...southwest winds 5 to 15 knots becoming south. a chance
of showers with a slight chance of thunderstorms. showers likely
with a chance of thunderstorms late. waves 2 to 4 feet subsiding
to 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. showers likely with a chance of thunderstorms. waves
1 to 3 feet building to 2 to 4 feet. 
.tuesday night...southwest winds 10 to 15 knots. showers likely
with a chance of thunderstorms. waves 2 to 4 feet subsiding to
1 to 3 feet. 
.wednesday...southwest winds 5 to 15 knots becoming south.
showers during the day, then showers with a chance of
thunderstorms wednesday night. waves 1 to 3 feet building to 2 to
4 feet. 
.thursday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. showers likely during the day, then a chance of showers
thursday night. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday...west winds 5 to 15 knots becoming south 15 to 20 knots.
waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$