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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 am edt sun aug 2 2026


slz022-024-022100-
saint lawrence river from cape vincent to saint regis
1003 am edt sun aug 2 2026

.rest of today...northeast winds 10 knots or less becoming
southeast. showers late this morning, then showers with a chance
of thunderstorms this afternoon. 
.tonight...southeast winds 5 to 10 knots becoming northwest.
showers with a chance of thunderstorms through the early
overnight, then showers late. 
.monday...northwest winds 5 to 10 knots. showers likely in the
morning, then a chance of showers in the afternoon. 
.monday night...northwest winds 10 knots or less becoming west. a
chance of showers in the evening. 
.tuesday...light and variable winds. mainly clear. 
.wednesday...south winds 10 knots or less. a chance of showers. 
.thursday...southwest winds less than 10 knots. a chance of
showers and thunderstorms. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt sun aug 2 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...an elongated 29.7 inch low will move from the ohio 
valley today to the lower great lakes tonight, with a remnant trough 
drifting towards new england monday. a 30.0 inch high will then 
build east across ontario and quebec monday through tuesday.


loz062-022100-
lake ontario open waters from the niagara river to hamlin beach-
1003 am edt sun aug 2 2026

.this afternoon...east winds 5 to 15 knots. showers with a chance
of thunderstorms. waves 1 to 3 feet. 
.tonight...northeast winds 5 to 15 knots becoming north. showers
with a chance of thunderstorms in the evening, then showers
likely after midnight. waves 1 to 2 feet. 
.monday...north winds 10 to 15 knots becoming west. waves 1 to
2 feet. 
.monday night...west winds 10 knots or less becoming northwest.
waves 2 feet or less. 
.tuesday...west winds 10 knots or less becoming southeast. waves
1 foot or less. 
.wednesday...south winds 10 knots or less becoming southwest. a
chance of showers. waves 1 foot or less. 
.thursday...southwest winds less than 10 knots. a chance of
showers thursday night. 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 am edt sun aug 2 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...an elongated 29.7 inch low will move from the ohio 
valley today to the lower great lakes tonight, with a remnant trough 
drifting towards new england monday. a 30.0 inch high will then 
build east across ontario and quebec monday through tuesday.


loz063>065-022100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 am edt sun aug 2 2026

.this afternoon...southeast winds 15 to 25 knots diminishing to
10 to 15 knots. showers with a chance of thunderstorms. waves
1 to 3 feet. 
.tonight...southeast winds 10 to 15 knots becoming northeast.
showers with a chance of thunderstorms through the early
overnight, then showers likely late. waves 1 to 3 feet. 
.monday...north winds 10 to 15 knots becoming west. waves 1 to
3 feet. 
.monday night...west winds 5 to 15 knots. waves 1 to 3 feet. 
.tuesday...west winds 10 knots or less becoming southeast. waves
1 foot or less. 
.wednesday...south winds 10 knots or less. a chance of showers
during the day, then a chance of showers and thunderstorms
wednesday night. waves 1 foot or less. 
.thursday...southwest winds 10 knots or less. a chance of
showers. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
922 am edt sun aug 2 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...
low pressure 29.70 inches will move east just to the south of 
lake erie today. high pressure 30.00 inches will build south over 
the region on monday which will linger into the middle of the 
week. a weak low pressure system 29.90 inches will approach the 
area on thursday.


lez061-168-169-022045-
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-
922 am edt sun aug 2 2026

.rest of today...southeast winds 5 to 15 knots becoming
northeast. showers with a chance of thunderstorms early, then
showers with a slight chance of thunderstorms late this morning.
showers with a chance of thunderstorms this afternoon. waves
2 feet or less. 
.tonight...northeast winds 15 to 20 knots becoming north. showers
with a chance of thunderstorms early, then a chance of showers
and thunderstorms late in the evening. a chance of showers with a
slight chance of thunderstorms after midnight. waves 1 to 3 feet
building to 2 to 4 feet. 
.monday...north winds 5 to 15 knots. waves 1 to 3 feet. 
.monday night...northwest winds 5 to 10 knots becoming east.
waves 1 foot or less. 
.tuesday...east winds 10 knots or less becoming southeast. waves
1 foot or less. 
.wednesday...south winds 10 knots or less. a chance of showers
and thunderstorms during the day. waves 1 foot or less. 
.thursday...southwest winds 10 knots or less. a chance of showers
and thunderstorms thursday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$