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open lake forecast for lake ontario
national weather service buffalo ny
1003 pm edt fri aug 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 high pressure ridge averaging 30.0 inches exits 
eastward before a cold front sweeps eastward across lake ontario 
saturday night. behind the front, a ridge averaging 30.1 inches 
builds from the western great lakes through sunday. this ridge 
begins to exit eastward sunday night and another cold front should 
sweep eastward across lake ontario monday night. behind the front, a 
trough averaging 29.8 inches should linger over the eastern great 
lakes through this wednesday.


loz062-080900-
lake ontario open waters from the niagara river to hamlin beach-
1003 pm edt fri aug 7 2026

.overnight...southeast winds less than 10 knots becoming
southwest. waves 1 foot or less. 
.saturday...southwest winds 5 to 15 knots. a chance of showers
late in the morning. waves 2 feet or less. 
.saturday night...southwest winds 10 to 15 knots becoming west. a
chance of showers and thunderstorms in the evening. waves 1 to
2 feet. 
.sunday...west winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.sunday night...southwest winds 5 to 10 knots becoming south.
waves 2 feet or less. 
.monday...southwest winds 5 to 15 knots becoming west. showers
likely with a chance of thunderstorms. waves 1 to 2 feet. 
.tuesday...west winds 10 knots or less becoming northwest.
showers likely during the day, then a chance of showers tuesday
night. waves 1 foot or less. 
.wednesday...northwest winds 10 knots or less becoming west.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1003 pm edt fri aug 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 high pressure ridge averaging 30.0 inches exits 
eastward before a cold front sweeps eastward across lake ontario 
saturday night. behind the front, a ridge averaging 30.1 inches 
builds from the western great lakes through sunday. this ridge 
begins to exit eastward sunday night and another cold front should 
sweep eastward across lake ontario monday night. behind the front, a 
trough averaging 29.8 inches should linger over the eastern great 
lakes through this wednesday.


loz063>065-080900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 pm edt fri aug 7 2026

.overnight...southeast winds less than 10 knots becoming
south. a chance of showers. waves 1 foot or less. 
.saturday...southwest winds 5 to 10 knots. a chance of showers
late in the morning. a chance of showers and thunderstorms in the
afternoon. waves 2 feet or less. 
.saturday night...southwest winds 5 to 15 knots becoming west. a
chance of showers. waves 2 feet or less building to 2 to 3 feet. 
.sunday...west winds 10 to 15 knots. waves 1 to 3 feet. 
.sunday night...southwest winds 5 to 15 knots becoming south.
waves 2 feet or less. 
.monday...south winds 5 to 10 knots becoming west. a chance of
showers and thunderstorms during the day, then showers likely
with a chance of thunderstorms monday night. waves 1 to 2 feet. 
.tuesday...west winds 5 to 10 knots becoming northwest. a chance
of showers. waves 2 feet or less. 
.wednesday...northwest winds 5 to 10 knots becoming west. a
chance of showers wednesday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 pm edt fri aug 7 2026


slz022-024-080900-
saint lawrence river from cape vincent to saint regis
1003 pm edt fri aug 7 2026

.overnight...light and variable winds. patchy fog. a chance
of showers. 
.saturday...light and variable winds becoming southwest 5 to
10 knots. patchy fog early. a chance of showers early. 
.saturday night...southwest winds 5 to 10 knots. a chance of
showers and thunderstorms in the evening, then a chance of
showers overnight. 
.sunday...west winds 5 to 10 knots becoming southwest. becoming
mostly sunny. 
.sunday night...southwest winds 10 knots or less becoming south.
mainly clear in the evening, then becoming partly cloudy. 
.monday...south winds 10 knots or less becoming southwest.
showers likely with a chance of thunderstorms. 
.tuesday...west winds less than 10 knots. a chance of showers. 
.wednesday...light and variable winds. a chance of showers. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
952 pm edt fri aug 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...
a cold front east across lake erie saturday evening and night. a 
ridge averaging 30.10 inches will briefly build over the region on
sunday before low pressure 30.00 inches lifts from the central 
plains into the lower great lakes region on monday. a stationary 
boundary will linger in the vicinity of lake erie through mid- 
week.


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-
952 pm edt fri aug 7 2026

.overnight...south winds 5 to 15 knots becoming southwest.
a slight chance of showers and thunderstorms. a
chance of showers and thunderstorms late. waves 2 feet or less. 
.saturday...southwest winds 10 to 15 knots. showers likely with a
chance of thunderstorms early, then a chance of showers and
thunderstorms late in the morning. a slight chance of showers and
thunderstorms early in the afternoon. waves 1 to 3 feet. 
.saturday night...southwest winds 5 to 15 knots becoming north. a
chance of showers overnight. waves 1 to 3 feet. 
.sunday...north winds 10 knots or less becoming west. waves
2 feet or less. 
.sunday night...south winds 10 knots or less becoming southwest
10 to 15 knots. a chance of showers overnight. waves 2 feet or
less. 
.monday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers and thunderstorms during the day,
then showers with a chance of thunderstorms monday night. waves
2 to 4 feet. 
.tuesday...west winds 5 to 15 knots becoming northwest. showers
likely with a chance of thunderstorms during the day, then a
chance of showers tuesday night. waves 1 to 3 feet. 
.wednesday...northwest winds 10 knots or less becoming north. a
chance of showers. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$