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open lake forecast for lake ontario
national weather service buffalo ny
127 pm edt sat aug 22 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 high pressure ridge averaging 30.1 inches exits toward 
the canadian maritimes today. elsewhere, a 29.6 inch low should 
wobble northeastward from the central great lakes to southwestern 
quebec through monday. in response to the low's track, a warm front 
drifts northeastward across lake ontario tonight and then a cold 
front sweeps eastward across the lake overnight tonight through 
sunday. behind the cold front, a trough averaging 29.8 inches 
lingers over lake ontario through monday. on tuesday through 
wednesday, a ridge averaging 30.1 inches builds from the western and 
central great lakes. the ridge should begin to exit eastward on 
thursday and allow a warm front to sweep northeastward across lake 
ontario.


loz062-222115-
lake ontario open waters from the niagara river to hamlin beach-
127 pm edt sat aug 22 2026

...severe thunderstorm watch 614 in effect until 9 pm edt this
evening...

.this afternoon...east winds 10 knots or less. a chance of showers
and thunderstorms late. waves around 1 foot. 
.tonight...east winds 5 to 15 knots becoming south. showers with
a chance of thunderstorms. waves 1 to 2 feet. 
.sunday...southwest winds 15 to 20 knots becoming west. showers
likely in the morning, then showers with a chance of
thunderstorms in the afternoon. waves 1 to 3 feet building to
3 to 6 feet. 
.sunday night...west winds 15 to 20 knots. showers likely with a
chance of thunderstorms in the evening, then a chance of showers
overnight. waves 4 to 6 feet. 
.monday...southwest winds 15 to 25 knots becoming west. showers
during the day, then showers likely monday night. waves 5 to
8 feet subsiding to 3 to 5 feet. waves occasionally around
10 feet. 
.tuesday...west winds 15 to 20 knots diminishing to 10 knots or
less. waves 2 to 4 feet subsiding to 1 foot or less. 
.wednesday...southwest winds 10 knots or less becoming south.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 221727
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open lake forecast for lake ontario
national weather service buffalo ny
127 pm edt sat aug 22 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 high pressure ridge averaging 30.1 inches exits toward 
the canadian maritimes today. elsewhere, a 29.6 inch low should 
wobble northeastward from the central great lakes to southwestern 
quebec through monday. in response to the low's track, a warm front 
drifts northeastward across lake ontario tonight and then a cold 
front sweeps eastward across the lake overnight tonight through 
sunday. behind the cold front, a trough averaging 29.8 inches 
lingers over lake ontario through monday. on tuesday through 
wednesday, a ridge averaging 30.1 inches builds from the western and 
central great lakes. the ridge should begin to exit eastward on 
thursday and allow a warm front to sweep northeastward across lake 
ontario.


loz063>065-222115-
lake ontario open waters from hamlin beach to the saint lawrence
river-
127 pm edt sat aug 22 2026

.this afternoon...southeast winds 5 to 10 knots. waves 2 feet or
less. 
.tonight...southeast winds 5 to 10 knots becoming south and
increasing to 15 to 25 knots after midnight. showers with a
chance of thunderstorms. waves 1 to 3 feet building to 3 to
5 feet. 
.sunday...south winds 15 to 25 knots becoming west. showers with
a chance of thunderstorms. waves 3 to 5 feet building to 3 to
6 feet. 
.sunday night...west winds 15 to 20 knots becoming southwest.
showers likely with a chance of thunderstorms in the evening,
then showers overnight. waves 3 to 6 feet building to 4 to
7 feet. waves occasionally around 9 feet. 
.monday...southwest winds 15 to 25 knots becoming west. showers.
waves 4 to 7 feet building to 6 to 9 feet, then subsiding to 4 to
7 feet. waves occasionally around 11 feet. 
.tuesday...west winds 15 to 20 knots diminishing to 5 to
15 knots. a chance of showers during the day. waves 3 to 6 feet
subsiding to 1 to 3 feet. 
.wednesday...west winds 5 to 15 knots becoming south. waves
2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
207 pm edt sat aug 22 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 cold front will move east through the area this evening. a 
trough averaging 29.80 will linger over the eastern great lakes 
sunday into monday. high pressure 30.00 inches will gradually
build into the region monday through tuesday.


lez061-167>169-230215-
ripley to buffalo ny extending from 5nm 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-
207 pm edt sat aug 22 2026

...severe thunderstorm watch 614 in effect until 9 pm edt this
evening...

.tonight...southwest winds 5 to 15 knots becoming northwest 15 to
20 knots. showers with thunderstorms likely early this afternoon,
then a chance of showers and thunderstorms after midnight. a
chance of waterspouts. some thunderstorms may be severe with
damaging winds and large hail early this afternoon. waves 1 to
3 feet building to 3 to 5 feet. 
.sunday...northwest winds 15 to 20 knots becoming west. a chance
of waterspouts. a chance of showers with a slight chance of
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon. waves 3 to 6 feet. 
.sunday night...west winds 15 to 25 knots. a chance of
waterspouts. showers likely with a chance of thunderstorms in the
evening, then a chance of showers overnight. waves 3 to 6 feet. 
.monday...west winds 15 to 25 knots. a chance of waterspouts. a
chance of showers. waves 3 to 6 feet. 
.monday night...west winds 15 to 20 knots becoming northwest
10 to 15 knots. a chance of waterspouts in the evening. waves
3 to 6 feet subsiding to 1 to 3 feet. 
.tuesday...northwest winds 5 to 10 knots becoming southwest.
waves 2 feet or less. 
.wednesday...south winds 5 to 15 knots. a chance of showers
wednesday night. waves 2 feet or less. 
.thursday...southwest winds 5 to 10 knots becoming west. a chance
of showers thursday night. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$