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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt mon jul 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 large 30.2 inch high will slide east to eastern new 
england today, then shift off the coast tonight and tuesday. this 
will allow a warm front to sweep across the lake tuesday, followed 
by a cold front pushing south across the lake on wednesday, trailed 
by a secondary cold front pushing south across the lake thursday 
into friday.


loz062-131500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt mon jul 13 2026

.today...southwest winds 10 knots or less. waves 1 foot or less. 
.tonight...southwest winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.tuesday...southwest winds 15 to 20 knots. waves 2 to 4 feet
building to 3 to 5 feet. 
.tuesday night...southwest winds 15 to 20 knots becoming west.
waves 3 to 5 feet subsiding to 2 to 4 feet. 
.wednesday...west winds 5 to 15 knots. waves 1 to 3 feet. 
.thursday...west winds 5 to 15 knots becoming north. waves 1 to
3 feet. 
.friday...north winds 5 to 10 knots. a chance of showers friday
night. waves 1 foot or less. 

$$

fzus61 kbuf 130802
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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt mon jul 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 large 30.2 inch high will slide east to eastern new 
england today, then shift off the coast tonight and tuesday. this 
will allow a warm front to sweep across the lake tuesday, followed 
by a cold front pushing south across the lake on wednesday, trailed 
by a secondary cold front pushing south across the lake thursday 
into friday.


loz063>065-131500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt mon jul 13 2026

.today...south winds 5 to 15 knots becoming west. waves 2 feet or
less. 
.tonight...southwest winds 5 to 15 knots. waves 1 to 3 feet. 
.tuesday...southwest winds 15 to 20 knots. waves 2 to 4 feet
building to 3 to 6 feet. 
.tuesday night...southwest winds 15 to 25 knots becoming west.
waves 4 to 7 feet subsiding to 3 to 6 feet. waves occasionally
around 9 feet. 
.wednesday...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.thursday...west winds 15 to 20 knots becoming north 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.friday...north winds 5 to 10 knots becoming southwest. a chance
of showers friday night. waves 2 feet or less. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
338 am edt mon jul 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...
high pressure 30.10 inches continues to build across the great
lakes region today before settling across the ohio valley through
wednesday. a cold front will move south across lake erie on 
wednesday with an additional cold front moving south through the 
region on friday. 


lez061-167>169-131415-
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-
338 am edt mon jul 13 2026

.today...southeast winds less than 10 knots becoming west. waves
1 foot or less. 
.tonight...southwest winds 5 to 10 knots. waves 1 foot or less. 
.tuesday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.tuesday night...southwest winds 15 to 20 knots becoming west
10 to 15 knots. waves 2 to 4 feet. 
.wednesday...west winds 5 to 10 knots becoming northwest. waves
1 to 3 feet. 
.thursday...northwest winds 5 to 10 knots becoming north. waves
1 foot or less. 
.friday...north winds 5 to 15 knots becoming southwest. a chance
of showers friday night. waves 2 feet or less. 

$$