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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 am edt fri may 8 2026


slz022-024-082100-
saint lawrence river from cape vincent to saint regis
1003 am edt fri may 8 2026

.this afternoon...southwest winds 5 to 15 knots. mostly cloudy,
then becoming partly sunny. 
.tonight...southwest winds 5 to 10 knots becoming south. partly
cloudy. 
.saturday...south winds 5 to 10 knots. mostly sunny. 
.saturday night...south winds 5 to 15 knots becoming southwest.
showers likely. 
.sunday...southwest winds 5 to 15 knots becoming west less than
10 knots. a chance of rain showers during the day. 
.monday...west winds 10 knots or less becoming northwest. partly
cloudy. 
.tuesday...northwest winds 5 to 10 knots becoming light and
variable. partly cloudy. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt fri may 8 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 30.1 inch high will drift off the mid atlantic coast 
through tonight. a weak 29.5 inch low will then move from the upper 
great lakes saturday to western quebec by early sunday before moving 
to northern quebec early monday. meanwhile, a trailing cold front 
will cross the lake sunday night. a 30.4 inch high will then build 
from the upper great lakes monday to the lower great lakes by 
tuesday.


loz062-082100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt fri may 8 2026

.this afternoon...west winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.tonight...southwest winds 5 to 10 knots becoming south. waves
2 feet or less. 
.saturday...south winds 10 knots or less becoming southeast. a
chance of showers in the afternoon. waves 1 foot 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...west winds 5 to 15 knots becoming northwest. waves
2 feet or less. 
.tuesday...northwest winds 5 to 10 knots becoming southeast.
waves 2 feet or less. 

$$

fzus61 kbuf 081402
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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt fri may 8 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 30.1 inch high will drift off the mid atlantic coast 
through tonight. a weak 29.5 inch low will then move from the upper 
great lakes saturday to western quebec by early sunday before moving 
to northern quebec early monday. meanwhile, a trailing cold front 
will cross the lake sunday night. a 30.4 inch high will then build 
from the upper great lakes monday to the lower great lakes by 
tuesday.


loz063>065-082100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt fri may 8 2026

.this afternoon...west winds 5 to 15 knots becoming southwest.
waves 2 feet or less. 
.tonight...southwest winds 5 to 15 knots becoming south. 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...southeast 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. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.monday...west winds 5 to 15 knots becoming northwest. 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
928 am edt fri may 8 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...
mean sea level pressure wavers around 29.80 inches through 
saturday afternoon as subtle trough axes move eastward across 
lake erie. a cold front is expected to sweep southeastward across
the lake saturday evening through saturday night. behind the 
front, a ridge averaging 30.10 inches should affect lake erie as 
the embedded high pressure center moves from the canadian prairies
to atlantic waters near north carolina on sunday through tuesday.


lez061-168-169-082015-
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-
928 am edt fri may 8 2026

.this afternoon...southwest winds 5 to 10 knots. waves around
1 foot. 
.tonight...south winds 10 knots or less. a slight chance of
showers from late evening on. waves around 1 foot. 
.saturday...south winds 5 to 15 knots becoming southwest. a
chance of showers in the afternoon. waves 2 feet or less. 
.saturday night...southwest winds 5 to 15 knots becoming
northwest. a chance of showers. waves 1 to 3 feet. 
.sunday...northwest winds 10 knots or less 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. 

winds and waves higher in and near thunderstorms.

$$