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open lake forecast for lake ontario
national weather service buffalo ny
1003 pm edt sun oct 4 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 29.7 inch low over northwest ontario will deepen to 
29.4 inches as it slides just south of james bay over central quebec 
tonight, while sending a pair of cold fronts across the lake. a 30.2 
inch high over the upper midwest will then build across the great 
lakes monday into tuesday, before sliding into the northeast 
wednesday. a cold front will then pass across the lake thursday. a 
30.1 inch surface high will then ridge north across the lake friday.


loz062-050900-
lake ontario open waters from the niagara river to hamlin beach-
1003 pm edt sun oct 4 2026

.rest of tonight...west winds 15 to 25 knots becoming northwest.
waves 2 to 4 feet building to 3 to 6 feet. 
.monday...west winds to 30 knots becoming northwest. waves 5 to
8 feet. waves occasionally around 10 feet. 
.monday night...northwest winds 15 to 25 knots diminishing to
10 to 15 knots. waves 4 to 7 feet subsiding to 1 to 3 feet. waves
occasionally around 9 feet. 
.tuesday...northwest winds 5 to 10 knots becoming southwest.
waves 2 feet or less. 
.tuesday night...southwest winds 10 to 15 knots increasing to
15 to 20 knots. waves 1 to 3 feet. 
.wednesday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.thursday...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 1 to 3 feet. 
.friday...west winds 10 to 15 knots becoming northwest. waves
1 to 3 feet. 

$$

fzus61 kbuf 050203
glflo 
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open lake forecast for lake ontario
national weather service buffalo ny
1003 pm edt sun oct 4 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 29.7 inch low over northwest ontario will deepen to 
29.4 inches as it slides just south of james bay over central quebec 
tonight, while sending a pair of cold fronts across the lake. a 30.2 
inch high over the upper midwest will then build across the great 
lakes monday into tuesday, before sliding into the northeast 
wednesday. a cold front will then pass across the lake thursday. a 
30.1 inch surface high will then ridge north across the lake friday.


loz063>065-050900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 pm edt sun oct 4 2026

.rest of tonight...southwest winds 15 to 25 knots becoming
northwest. a chance of showers late this evening, then showers
likely after midnight. a chance of showers late. waves 1 to
3 feet building to 4 to 7 feet. waves occasionally around 9 feet.
.monday...northwest winds to 30 knots. waves 5 to 8 feet building
to 7 to 10 feet. waves occasionally around 13 feet. 
.monday night...northwest winds to 30 knots diminishing to 15 to
25 knots. waves 5 to 9 feet subsiding to 3 to 5 feet. waves
occasionally around 11 feet. 
.tuesday...northwest winds 5 to 15 knots becoming west. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.tuesday night...southwest winds 5 to 10 knots becoming south and
increasing to 15 to 20 knots. waves 1 to 3 feet building to 2 to
4 feet. 
.wednesday...southwest winds 15 to 25 knots becoming west and
diminishing to 10 to 15 knots. a chance of showers. waves 3 to
5 feet subsiding to 2 to 4 feet. 
.thursday...west winds 15 to 20 knots. a chance of showers. waves
2 to 4 feet building to 3 to 5 feet, then subsiding to 2 to
4 feet. 
.friday...west winds 10 to 15 knots becoming northwest. waves
2 to 4 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
933 pm edt sun oct 4 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 trough with pressure of 30.00 inches will pull a cold front
south across lake erie tonight. high pressure of 30.20 inches 
will build overhead on monday then become centered along the mid-
atlantic coast by late tuesday. a warm front will lift north
across lake erie tuesday night followed by a trough of 29.80
inches and an associated cold front on wednesday night. high
pressure of 30.20 inches will build east through the ohio valley 
on friday. 


lez061-166>169-050830-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm 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-
933 pm edt sun oct 4 2026

.overnight...west winds 15 to 20 knots becoming northwest.
waves 2 to 4 feet building to 3 to 5 feet. 
.monday...northwest winds 15 to 20 knots. waves 2 to 4 feet. 
.monday night...northwest winds 15 to 20 knots diminishing to
5 to 15 knots. waves 2 to 4 feet subsiding to 1 foot or less. 
.tuesday...northwest winds 5 to 10 knots becoming southwest.
waves 1 foot or less. 
.tuesday night...southwest winds 5 to 10 knots increasing to
15 to 25 knots. waves 1 foot or less building to 3 to 6 feet. 
.wednesday...southwest winds 15 to 25 knots becoming west and
diminishing to 10 to 15 knots. waves 4 to 7 feet subsiding to
2 to 3 feet. waves occasionally around 9 feet. 
.thursday...west winds 10 to 15 knots. waves 1 to 3 feet. 
.friday...west winds 10 to 15 knots becoming north. waves 1 to
3 feet. 

$$