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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt mon oct 12 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 averaging 29.9 inches will slide eastward across 
the lower great lakes today before exiting eastward tonight. a cold 
front will sweep southeast across the lake on tuesday. behind the 
cold front, a ridge averaging 30.2 inches builds from northern 
ontario through thursday. a 29.9 inch low may move across the great 
lakes region friday. this low has the potential to deepen into a 
stronger low.


loz062-122100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt mon oct 12 2026

.this afternoon...west winds 5 to 10 knots becoming southwest.
waves 1 to 2 feet. 
.tonight...southwest winds 5 to 15 knots. a chance of showers and
thunderstorms late. waves 2 feet or less. 
.tuesday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. showers likely with a chance of thunderstorms. waves
1 to 3 feet building to 2 to 4 feet. 
.tuesday night...southwest winds 15 to 20 knots becoming
northwest 10 to 15 knots. showers likely with a chance of
thunderstorms in the evening, then a chance of showers overnight.
waves 2 to 4 feet subsiding to 1 to 3 feet. 
.wednesday...northwest winds 5 to 15 knots becoming north. waves
2 feet or less. 
.thursday...northeast winds 10 to 15 knots becoming east. showers
thursday night. waves 1 to 3 feet. 
.friday...northwest winds 15 to 20 knots increasing to 30 knots.
showers. waves 1 to 3 feet building to 7 to 10 feet. waves
occasionally around 13 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 121402
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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt mon oct 12 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 averaging 29.9 inches will slide eastward across 
the lower great lakes today before exiting eastward tonight. a cold 
front will sweep southeast across the lake on tuesday. behind the 
cold front, a ridge averaging 30.2 inches builds from northern 
ontario through thursday. a 29.9 inch low may move across the great 
lakes region friday. this low has the potential to deepen into a 
stronger low.


loz063>065-122100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt mon oct 12 2026

.this afternoon...west winds 5 to 10 knots. patchy drizzle. waves
1 foot or less. 
.tonight...southwest winds 5 to 10 knots becoming south. a chance
of showers after midnight. showers likely late. waves 1 foot or
less. 
.tuesday...south winds 10 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. 
.tuesday night...southwest winds 10 to 15 knots becoming
northwest. showers with a chance of thunderstorms in the evening,
then a chance of showers overnight. waves 1 to 3 feet. 
.wednesday...northwest winds 5 to 15 knots becoming north. waves
1 to 3 feet. 
.thursday...northeast winds 5 to 15 knots becoming southeast.
showers thursday night. waves 1 to 3 feet. 
.friday...southwest winds 15 to 25 knots becoming northwest to
30 knots. showers. waves 2 to 4 feet building to 8 to 11 feet.
waves occasionally around 14 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
344 pm edt mon oct 12 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 30.00 inches will drift southeast of lake erie
tonight into tuesday before a cold front crosses the lake late
tuesday into wednesday. high pressure 30.20 inches will briefly
build over the great lakes thursday, followed by low pressure
29.80 inches and an accompanying cold front crossing the region 
friday. a trough averaging 29.90 inches will persist over the 
eastern basin of the lake as high pressure 30.40 inches builds in 
from the west on saturday.


lez061-167>169-130215-
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-
344 pm edt mon oct 12 2026

.tonight...southwest winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers with a slight chance of
thunderstorms late. waves 1 to 3 feet building to 2 to 4 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest. a
chance of showers with a slight chance of thunderstorms early,
then a slight chance of showers and thunderstorms late in the
morning. waves 3 to 6 feet. 
.tuesday night...west winds 15 to 25 knots becoming northwest and
diminishing to 5 to 15 knots. waves 3 to 6 feet subsiding to 1 to
3 feet. 
.wednesday...northwest winds 5 to 10 knots. a chance of showers.
waves 1 to 2 feet. 
.wednesday night...north winds 10 to 15 knots becoming northeast
15 to 20 knots. a chance of showers in the evening. waves 1 to
3 feet. 
.thursday...northeast winds 10 to 15 knots becoming south 15 to
20 knots. a chance of showers during the day, then showers
thursday night. waves 1 to 3 feet. 
.friday...west winds to 30 knots becoming northwest and
increasing to 35 knot gales. showers during the day, then a
chance of showers friday night. waves 5 to 8 feet building to
8 to 11 feet. waves occasionally around 14 feet. 
.saturday...northwest winds to 30 knots becoming west 15 to
25 knots. waves 7 to 10 feet subsiding to 2 to 4 feet. waves
occasionally around 13 feet. 

winds and waves higher in and near thunderstorms.

$$