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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 am edt wed may 6 2026


slz022-024-061500-
saint lawrence river from cape vincent to saint regis
403 am edt wed may 6 2026

.today...northwest winds 5 to 10 knots becoming northeast.
showers through early afternoon. 
.tonight...southwest winds 10 knots or less. mostly cloudy
through the early overnight, then becoming partly cloudy. 
.thursday...west winds 5 to 15 knots becoming southwest. mostly
sunny. 
.thursday night...southwest winds 5 to 15 knots diminishing to
less than 10 knots. partly to mostly cloudy. 
.friday...southwest winds 5 to 10 knots. a chance of rain showers
friday night. 
.saturday...southwest winds 5 to 15 knots becoming south. a
chance of rain showers. 
.sunday...southwest winds 10 knots or less becoming west. a
chance of showers. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt wed may 6 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 29.2 inch low over hudson bay will weaken to 29.3 
inches as it moves to northern quebec today. a 30.1 inch high over 
the tennessee and ohio valleys thursday will slide to the mid-
atlantic coastline friday. a 29.6 inch low will track across the 
lake early saturday, followed by a 29.7 inch low that will track 
near or just south of the lake for later sunday.


loz062-061500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt wed may 6 2026

.today...east winds 5 to 15 knots becoming north. showers this
morning, then a chance of showers early this afternoon. waves
1 to 2 feet. 
.tonight...west winds 10 knots or less becoming northwest. waves
1 foot or less. 
.thursday...northwest winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.thursday night...southwest winds 5 to 10 knots. waves 1 foot or
less. 
.friday...southwest winds 5 to 15 knots. a chance of showers
friday night. waves 1 to 2 feet. 
.saturday...south winds 5 to 15 knots becoming southwest. a
chance of showers. waves 1 to 3 feet. 
.sunday...west winds 5 to 10 knots becoming northwest. a chance
of showers. waves 1 to 2 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt wed may 6 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 29.2 inch low over hudson bay will weaken to 29.3 
inches as it moves to northern quebec today. a 30.1 inch high over 
the tennessee and ohio valleys thursday will slide to the mid-
atlantic coastline friday. a 29.6 inch low will track across the 
lake early saturday, followed by a 29.7 inch low that will track 
near or just south of the lake for later sunday.


loz063>065-061500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt wed may 6 2026

.today...northeast winds 15 to 20 knots becoming northwest and
diminishing to 5 to 10 knots. showers this morning, then a chance
of showers early this afternoon. waves 1 to 3 feet. 
.tonight...west winds 5 to 15 knots. waves 2 feet or less. 
.thursday...west winds 5 to 10 knots increasing to 15 to
20 knots. waves 1 to 3 feet. 
.thursday night...west winds 5 to 15 knots. waves 1 to 3 feet. 
.friday...west winds 5 to 15 knots becoming south. a chance of
showers friday night. waves 2 feet or less. 
.saturday...south winds 5 to 15 knots increasing to 15 to
20 knots. a chance of showers. waves 1 to 3 feet. 
.sunday...southwest winds 5 to 15 knots becoming northwest. a
chance of showers. waves 1 to 3 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
409 am edt wed may 6 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 ridge averaging 29.90 inches will slowly build east across the 
great lakes today through early friday. low pressure 29.70 inches
will move east across the great lakes late friday into saturday, 
pushing a cold front east across the lake. another low pressure 
29.80 inches accompanied by a cold front will move east across 
lake erie on sunday.


lez061-167>169-061415-
ripley to buffalo ny extending from 5nm 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-
409 am edt wed may 6 2026

.today...north winds 5 to 10 knots becoming west. rain early,
then a chance of rain late this morning. waves 1 to 2 feet. 
.tonight...west winds 5 to 10 knots. waves 2 feet or less. 
.thursday...northwest winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.thursday night...southwest winds 5 to 10 knots. waves 1 to
2 feet. 
.friday...southwest winds 5 to 15 knots. a chance of showers
during the day, then showers likely friday night. waves 1 to
2 feet. 
.saturday...southwest winds 5 to 15 knots. a chance of showers
saturday night. waves 1 to 2 feet. 
.sunday...southwest winds 5 to 15 knots becoming north. showers
likely during the day. waves 1 to 2 feet. 

$$