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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu sep 17 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 weak front will move southeast and away from the lake 
overnight. a 30.3 inch high will build from northwest ontario friday 
to southern quebec saturday, then off the new england coast saturday 
night. a weak 29.9 inch low is then forecast to move east across 
ohio and pennsylvania late saturday night through sunday. another 
30.3 inch high will then build from northwest ontario sunday night 
to quebec by tuesday and wednesday while gradually strengthening to 
30.6 inches.


loz062-180900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt thu sep 17 2026

.overnight...northwest winds 10 to 15 knots becoming north.
waves 1 to 2 feet. 
.friday...north winds 5 to 15 knots diminishing to less than
10 knots. waves 2 feet or less. 
.friday night...north winds 5 to 15 knots becoming east 15 to
20 knots. waves 2 feet or less building to 2 to 4 feet. 
.saturday...east winds 10 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.saturday night...east winds 10 to 15 knots. a chance of showers
overnight. waves 1 to 3 feet. 
.sunday...northeast winds 10 to 15 knots increasing to 15 to
25 knots. a chance of showers during the day. waves 1 to 3 feet
building to 3 to 6 feet. 
.monday...northeast winds 15 to 25 knots. waves 5 to 8 feet.
waves occasionally around 10 feet. 
.tuesday...northeast winds to 30 knots becoming east. a chance of
showers. waves 5 to 9 feet. waves occasionally around 11 feet. 

$$
fzus61 kbuf 180202
glflo 
expires:202609180900;;631579

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu sep 17 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 weak front will move southeast and away from the lake 
overnight. a 30.3 inch high will build from northwest ontario friday 
to southern quebec saturday, then off the new england coast saturday 
night. a weak 29.9 inch low is then forecast to move east across 
ohio and pennsylvania late saturday night through sunday. another 
30.3 inch high will then build from northwest ontario sunday night 
to quebec by tuesday and wednesday while gradually strengthening to 
30.6 inches.


loz063>065-180900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt thu sep 17 2026

.overnight...northwest winds 5 to 15 knots becoming north.
waves 2 feet or less. 
.friday...north winds 10 to 15 knots. waves 1 to 3 feet. 
.friday night...north winds 10 to 15 knots becoming northeast.
waves 1 to 3 feet. 
.saturday...east winds 5 to 15 knots. waves 1 to 3 feet. 
.saturday night...east winds 5 to 10 knots. a chance of showers
overnight. waves 2 feet or less. 
.sunday...east winds 10 to 15 knots becoming northeast and
increasing to 15 to 25 knots. a chance of showers during the day.
waves 1 to 3 feet building to 3 to 6 feet. 
.monday...northeast winds 15 to 25 knots. waves 4 to 7 feet.
waves occasionally around 9 feet. 
.tuesday...northeast winds 15 to 25 knots becoming east. a chance
of showers. waves 4 to 7 feet subsiding to 3 to 6 feet. waves
occasionally around 9 feet. 

$$
fzus61 kcle 180735
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open lake forecast for lake erie
national weather service cleveland oh
335 am edt fri sep 18 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...
high pressure 30.20 inches will build over lake erie today before 
low pressure 29.80 inches moves east across the southern great lakes 
this weekend. a trough averaging 29.90 inches will linger into early 
next week.


lez061-168-169-181415-
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-
335 am edt fri sep 18 2026

.today...northeast winds 5 to 15 knots. waves 1 to 3 feet. 
.tonight...northeast winds 10 to 15 knots becoming east. waves
1 to 3 feet. 
.saturday...east winds 5 to 15 knots. waves 1 to 3 feet. 
.saturday night...east winds 5 to 15 knots. a chance of showers
in the evening, then showers likely overnight. waves 2 feet or
less. 
.sunday...northeast winds 10 to 15 knots increasing to 15 to
25 knots. a chance of showers during the day. waves 1 to 3 feet
building to 4 to 7 feet. waves occasionally around 9 feet. 
.monday...northeast winds to 30 knots. a chance of showers monday
night. waves 5 to 9 feet. waves occasionally around 11 feet. 
.tuesday...northeast winds to 30 knots becoming east. a chance of
showers during the day, then showers likely tuesday night. waves
5 to 9 feet. waves occasionally around 11 feet. 

winds and waves higher in and near thunderstorms.

$$
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