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open lake forecast for lake ontario
national weather service buffalo ny
1010 pm 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 29.6 inch low will 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.


loz062-140900-
lake ontario open waters from the niagara river to hamlin beach-
1010 pm edt mon apr 13 2026

.overnight...west winds 5 to 10 knots becoming east.
showers likely with a chance of thunderstorms late. waves 2 feet
or less. 
.tuesday...southeast winds 10 to 15 knots becoming southwest
15 to 20 knots. showers with a chance of thunderstorms in the
morning, then a chance of showers and thunderstorms in the
afternoon. waves 1 to 2 feet building to 3 to 5 feet. 
.tuesday night...southwest winds 15 to 20 knots diminishing to
10 to 15 knots. a chance of showers and thunderstorms in the
evening, then showers with a chance of thunderstorms overnight.
waves 3 to 5 feet subsiding to 1 to 2 feet. 
.wednesday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. showers with a chance of thunderstorms in the morning,
then showers likely in the afternoon. waves 1 to 2 feet. 
.wednesday night...southwest winds 15 to 20 knots becoming south
and diminishing to 5 to 10 knots. showers. waves 1 to 2 feet. 
.thursday...south winds 10 to 15 knots becoming southwest.
showers. waves 1 to 3 feet. 
.friday...west winds 5 to 15 knots becoming east. a chance of
showers during the day. waves 1 to 3 feet subsiding to 1 foot or
less. 
.saturday...southeast winds 5 to 10 knots becoming southwest and
increasing to 15 to 25 knots. showers likely. waves 1 to 3 feet
building to 3 to 6 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 140211
glflo 
expires:202604140900;;327693

open lake forecast for lake ontario
national weather service buffalo ny
1010 pm 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 29.6 inch low will 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>065-140900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1010 pm edt mon apr 13 2026

.overnight...west winds 5 to 10 knots becoming southeast.
waves 1 to 3 feet. 
.tuesday...southeast winds 5 to 15 knots becoming southwest.
showers likely in the morning, then showers with a chance of
thunderstorms in the afternoon. waves 2 feet or less building to
2 to 4 feet. 
.tuesday night...west winds 5 to 15 knots becoming southwest. a
chance of showers and thunderstorms in the evening, then showers
likely with a chance of thunderstorms overnight. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.wednesday...south winds 5 to 10 knots becoming west and
increasing to 15 to 20 knots. showers likely with a chance of
thunderstorms in the morning, then showers likely in the
afternoon. waves 1 to 2 feet. 
.wednesday night...southwest winds 5 to 15 knots becoming south.
showers likely. waves 2 feet or less. 
.thursday...south winds 5 to 15 knots becoming west. showers
likely. waves 1 to 3 feet. 
.friday...northwest winds 5 to 15 knots becoming southeast. a
chance of showers during the day. waves 1 to 3 feet subsiding to
1 foot or less. 
.saturday...southeast winds 10 to 15 knots becoming southwest and
increasing to 15 to 25 knots. a chance of showers during the day,
then showers likely saturday night. waves 1 to 3 feet building to
4 to 7 feet. waves occasionally around 9 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
955 pm 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 will linger across the lower great 
lakes through the middle of this week with unsettled weather. 
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. another 
low pressure 29.50 inches will track through the northern great 
lakes on saturday.


lez061-166>169-140815-
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-
955 pm edt mon apr 13 2026

.rest of tonight...southwest winds 5 to 15 knots becoming south
15 to 20 knots. a chance of showers with a slight chance of
thunderstorms late this evening, then a slight chance of showers
and thunderstorms after midnight. a chance of showers and
thunderstorms late. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. showers likely with a chance of thunderstorms early,
then a chance of showers with a slight chance of thunderstorms
late in the morning. a chance of showers and thunderstorms in the
afternoon. waves 2 to 4 feet. 
.tuesday night...southwest winds 10 to 15 knots increasing to
15 to 20 knots. a chance of showers and thunderstorms in the
evening, then showers with a chance of thunderstorms overnight.
waves 1 to 3 feet. 
.wednesday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. showers with a chance of thunderstorms in the morning,
then showers in the afternoon. waves 1 to 3 feet. 
.wednesday night...southwest winds 5 to 15 knots becoming south.
showers with a chance of thunderstorms. waves 1 to 2 feet. 
.thursday...southwest winds 10 to 15 knots. showers likely during
the day, then a chance of showers thursday night. waves 1 to
3 feet. 
.friday...west winds 5 to 15 knots becoming southeast 15 to
20 knots. waves 1 to 3 feet. 
.saturday...south winds 15 to 20 knots becoming southwest.
showers likely. waves 2 to 4 feet building to 3 to 6 feet. 

winds and waves higher in and near thunderstorms.

$$