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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt sat sep 19 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 ridge of high pressure averaging 30.4 inches 
over the lake will slowly drift to the east through tonight and 
sunday, before drifting off the new england coast sunday night. this 
will open the door for a cold front to sweep southward across the 
lake sunday night, with a ridge averaging 30.4 inches building in 
from northern ontario through monday. by monday night through 
tuesday, a low of 30.0 inches should move from near the lower ohio 
valley toward the mid-atlantic states and extend a weak trough 
averaging 30.3 inches over the eastern great lakes. meanwhile, a 
strong 30.6 inch high over quebec tuesday will then ridge south 
across the lake from tuesday night through at least thursday.


loz062-200900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt sat sep 19 2026

.overnight...east winds 10 to 15 knots. a chance of showers
after midnight. waves 2 to 4 feet subsiding to 1 to 2 feet. 
.sunday...east winds 10 to 15 knots becoming northeast. a chance
of showers in the morning. waves 1 to 3 feet building to 2 to
4 feet. 
.sunday night...northeast winds 10 to 15 knots increasing to
15 to 25 knots. waves 1 to 3 feet building to 3 to 6 feet. 
.monday...northeast winds 15 to 20 knots. waves 3 to 6 feet
subsiding to 2 to 4 feet. 
.monday night...northeast winds 15 to 25 knots. waves 2 to 4 feet
building to 5 to 7 feet. waves occasionally around 9 feet. 
.tuesday...northeast winds 15 to 25 knots becoming east. waves
5 to 8 feet. waves occasionally around 10 feet. 
.wednesday...east winds 15 to 25 knots. waves 4 to 7 feet
subsiding to 3 to 5 feet. waves occasionally around 9 feet. 
.thursday...east winds 15 to 20 knots diminishing to around
10 knots. waves 2 to 4 feet. 

$$

fzus61 kbuf 200202
glflo 
expires:202609200900;;739859

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt sat sep 19 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 ridge of high pressure averaging 30.4 inches 
over the lake will slowly drift to the east through tonight and 
sunday, before drifting off the new england coast sunday night. this 
will open the door for a cold front to sweep southward across the 
lake sunday night, with a ridge averaging 30.4 inches building in 
from northern ontario through monday. by monday night through 
tuesday, a low of 30.0 inches should move from near the lower ohio 
valley toward the mid-atlantic states and extend a weak trough 
averaging 30.3 inches over the eastern great lakes. meanwhile, a 
strong 30.6 inch high over quebec tuesday will then ridge south 
across the lake from tuesday night through at least thursday.


loz063>065-200900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt sat sep 19 2026

.overnight...east winds 5 to 15 knots becoming southeast.
showers late. waves 2 feet or less. 
.sunday...southeast winds 10 to 15 knots becoming northeast 15 to
20 knots. showers in the morning, then a chance of showers early
in the afternoon. waves 2 feet or less building to 2 to 4 feet. 
.sunday night...northeast winds 15 to 25 knots. waves 2 to 4 feet
building to 3 to 6 feet. 
.monday...northeast winds 15 to 25 knots. waves 4 to 7 feet
subsiding to 2 to 4 feet. waves occasionally around 9 feet. 
.monday night...northeast winds 15 to 20 knots becoming east.
waves 2 to 4 feet building to 3 to 6 feet. 
.tuesday...east winds 15 to 20 knots. waves 3 to 6 feet. 
.wednesday...east winds 15 to 20 knots. waves 3 to 5 feet
subsiding to 2 to 4 feet. 
.thursday...east winds 15 to 20 knots diminishing to 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
940 pm edt sat sep 19 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 warm front will remain near lake erie through sunday. a low 
pressure system 29.90 inches will move along the boundary on 
sunday and will pull the front south as a cold front for sunday 
night. the lake will then remain between cool high pressure 30.40 
inches to the north and a trough averaging 29.90 inches over the 
ohio valley through the middle of the week.


lez061-168-169-200815-
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-
940 pm edt sat sep 19 2026

.rest of tonight...east winds 5 to 15 knots. a chance of showers.
waves 1 to 3 feet. 
.sunday...northeast winds 5 to 15 knots. showers in the morning,
then a chance of showers early in the afternoon. waves 1 to
3 feet. 
.sunday night...northeast winds 15 to 25 knots. waves 2 to 4 feet
building to 3 to 6 feet. 
.monday...northeast winds 15 to 25 knots increasing to 30 knots.
waves 5 to 8 feet. waves occasionally around 10 feet. 
.monday night...northeast winds to 30 knots becoming east. waves
5 to 8 feet. waves occasionally around 10 feet. 
.tuesday...east winds to 30 knots diminishing to 15 to 25 knots.
a chance of showers. waves 5 to 8 feet. waves occasionally around
10 feet. 
.wednesday...east winds 15 to 25 knots. a chance of showers.
waves 3 to 6 feet subsiding to 2 to 4 feet. 
.thursday...east winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers during the day. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$