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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu may 7 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 broad area of high pressure averaging 29.8 inches will 
build from the ohio valley tonight to off the mid atlantic coast by 
friday night. a 29.5 inch low will then move from the upper great 
lakes saturday to central quebec sunday before weakening over 
northern quebec monday. a 30.3 inch high is then forecast to build 
from northwest ontario province monday to the central great lakes 
tuesday.


loz062-080900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt thu may 7 2026

.rest of tonight...west winds 10 knots or less. a chance of rain
showers late this evening. waves 1 foot or less. 
.friday...west winds 5 to 10 knots becoming south. waves 1 foot
or less. 
.friday night...south winds 5 to 10 knots. waves 2 feet or less. 
.saturday...south winds 5 to 15 knots. a chance of showers in the
afternoon. waves 2 feet or less. 
.saturday night...south winds 10 to 15 knots becoming west. a
chance of showers. waves 1 to 3 feet. 
.sunday...west winds 5 to 15 knots becoming northwest. waves 1 to
3 feet. 
.monday...northwest winds 5 to 10 knots. waves 2 feet or less. 
.tuesday...northwest winds 5 to 10 knots becoming southeast. a
chance of showers tuesday night. waves 1 foot or less. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu may 7 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 broad area of high pressure averaging 29.8 inches will 
build from the ohio valley tonight to off the mid atlantic coast by 
friday night. a 29.5 inch low will then move from the upper great 
lakes saturday to central quebec sunday before weakening over 
northern quebec monday. a 30.3 inch high is then forecast to build 
from northwest ontario province monday to the central great lakes 
tuesday.


loz063>065-080900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt thu may 7 2026

.rest of tonight...west winds 5 to 10 knots. a chance of showers.
waves 2 feet or less. 
.friday...west winds 5 to 15 knots becoming southwest. waves
2 feet or less. 
.friday night...south winds 5 to 10 knots. waves 2 feet or less. 
.saturday...south winds 5 to 15 knots becoming southeast. a
chance of showers in the afternoon. waves 2 feet or less. 
.saturday night...south winds 10 to 15 knots becoming west 15 to
20 knots. showers likely. waves 1 to 3 feet building to 2 to
4 feet. 
.sunday...west winds 15 to 20 knots becoming northwest 5 to
15 knots. a chance of showers during the day. waves 2 to 4 feet
subsiding to 1 foot or less. 
.monday...northwest winds 5 to 15 knots. waves 1 to 3 feet. 
.tuesday...northwest winds 5 to 15 knots becoming south. waves
2 feet or less. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
931 pm edt thu may 7 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...
pressure steady at 29.90 inches will hold over lake erie into
friday. a weak low pressure 29.70 inches will track across the 
upper ohio valley and near the southern lakeshore of lake erie  
friday night through saturday morning. a stronger low pressure 
29.35 inches will lift northeast from the upper great lakes 
towards quebec canada saturday night, dragging a cold front across
lake erie. high pressure 30.10 inches will build across the great
lakes sunday into monday.


lez061-168-169-080815-
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-
931 pm edt thu may 7 2026

.overnight...west winds 5 to 10 knots becoming southwest. a
slight chance of showers. a chance of showers
late. waves 1 to 2 feet. 
.friday...west winds 5 to 10 knots becoming southwest. a chance
of showers early. waves 1 to 2 feet. 
.friday night...southwest winds 5 to 10 knots becoming south. a
chance of showers overnight. waves 1 foot or less. 
.saturday...south winds 5 to 10 knots becoming southwest. a
chance of showers in the afternoon. waves 1 foot or less. 
.saturday night...southwest winds 5 to 15 knots becoming
northwest. a chance of showers. waves 1 to 3 feet. 
.sunday...northwest winds 5 to 10 knots becoming north. waves
2 feet or less. 
.monday...north winds 5 to 10 knots. waves 2 feet or less. 
.tuesday...northwest winds 10 knots or less becoming southeast. a
chance of rain showers tuesday night. waves 1 foot or less. 

$$