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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 1 2026


slz022-024-012100-
saint lawrence river from cape vincent to saint regis
1003 am edt fri may 1 2026

.this afternoon...west winds 10 knots or less. mostly sunny. 
.tonight...west winds 10 knots or less becoming southwest. a
chance of rain showers after midnight. 
.saturday...west winds 10 knots or less. a chance of rain
showers. 
.saturday night...west winds 10 knots or less. a chance of rain
showers in the evening. 
.sunday...west winds 5 to 10 knots becoming southwest. partly to
mostly cloudy. 
.monday...southwest winds 5 to 15 knots becoming south 15 to
20 knots. a chance of showers. 
.tuesday...southwest winds 15 to 20 knots becoming south 5 to
15 knots. showers likely. 

$$

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expires:202605012100;;838714

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt fri may 1 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 29.7 inch low across atlantic canada will retrograde 
northwestward across the canadian maritimes and quebec through 
saturday. another 29.7 inch low will deepen to 29.2 inches as it 
tracks from the southeastern states northeast off the atlantic coast 
saturday and sunday, while a 30.2 inch high ridges across the lower 
great lakes. a 29.1 inch low will spin over ontario, quebec, and 
hudson bay monday through tuesday night, sending an attendant cold 
front across the lake tuesday.


loz062-012100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt fri may 1 2026

.this afternoon...east winds 10 knots or less becoming southeast.
a chance of showers late. waves 2 feet or less. 
.tonight...southeast winds 5 to 10 knots becoming northwest. a
chance of rain showers early. waves 2 feet or less. 
.saturday...northwest winds 5 to 10 knots becoming west. waves
1 foot or less. 
.saturday night...west winds 5 to 10 knots becoming northwest.
waves 1 foot or less. 
.sunday...west winds 10 to 15 knots becoming southwest 15 to
20 knots. a chance of rain showers sunday night. waves 1 to
2 feet building to 2 to 4 feet. 
.monday...southwest winds 15 to 25 knots increasing to 30 knots.
a chance of showers. waves 2 to 4 feet building to 5 to 8 feet.
waves occasionally around 10 feet. 
.tuesday...southwest winds 15 to 25 knots becoming southeast and
diminishing to 10 to 15 knots. showers likely. waves 4 to 7 feet
subsiding to 1 to 3 feet. waves occasionally around 9 feet. 

$$

fzus61 kbuf 011402
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expires:202605012100;;838715

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt fri may 1 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 29.7 inch low across atlantic canada will retrograde 
northwestward across the canadian maritimes and quebec through 
saturday. another 29.7 inch low will deepen to 29.2 inches as it 
tracks from the southeastern states northeast off the atlantic coast 
saturday and sunday, while a 30.2 inch high ridges across the lower 
great lakes. a 29.1 inch low will spin over ontario, quebec, and 
hudson bay monday through tuesday night, sending an attendant cold 
front across the lake tuesday.


loz063>065-012100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt fri may 1 2026

.this afternoon...east winds 10 knots or less becoming north. a
chance of rain showers late. waves 1 foot or less. 
.tonight...southwest winds 5 to 15 knots becoming west. a chance
of showers in the evening. waves 2 feet or less. 
.saturday...west winds 5 to 15 knots. waves 1 to 2 feet. 
.saturday night...west winds 5 to 10 knots becoming northwest.
waves 1 to 2 feet. 
.sunday...west winds 5 to 15 knots becoming southwest. a chance
of rain showers sunday night. waves 1 to 3 feet. 
.monday...south winds 15 to 25 knots. a chance of showers. waves
2 to 4 feet building to 4 to 7 feet. waves occasionally around
9 feet. 
.tuesday...southwest winds 15 to 25 knots becoming south and
diminishing to 10 to 15 knots. showers likely. waves 4 to 7 feet
subsiding to 1 to 2 feet. waves occasionally around 9 feet. 

$$

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expires:202605012015;;838347

open lake forecast for lake erie
national weather service cleveland oh
949 am edt fri may 1 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 trough averaging 29.90 inches will persist over lake erie
through today, followed by building high pressure 30.10 inches 
for the weekend. low pressure 29.70 inches will track east through
the upper great lakes on monday and extend a cold front across
lake erie by tuesday.


lez061-167>169-012015-
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-
949 am edt fri may 1 2026

.rest of today...northeast winds 10 knots or less becoming
northwest. rain showers likely late this morning, then a chance
of rain showers early this afternoon. waves 2 feet or less. 
.tonight...west winds 5 to 10 knots becoming north. waves 1 foot
or less. 
.saturday...north winds 5 to 10 knots becoming west. waves 1 foot
or less. 
.saturday night...west winds 5 to 10 knots. waves 1 foot or less.
.sunday...west winds 5 to 15 knots becoming southwest 15 to
20 knots. waves 2 feet or less building to 3 to 6 feet. 
.monday...southwest winds 15 to 25 knots. a chance of showers
during the day, then showers likely monday night. waves 3 to
6 feet. 
.tuesday...southwest winds 15 to 20 knots diminishing to 5 to
15 knots. showers likely. waves 3 to 6 feet subsiding to 1 to
3 feet. 

winds and waves higher in and near thunderstorms.

$$