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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 pm est wed nov 4 2026


slz022-024-051000-
saint lawrence river from cape vincent to saint regis
1003 pm est wed nov 4 2026

.overnight...south winds 5 to 10 knots. showers late. 
.thursday...south winds 10 to 15 knots becoming southwest.
showers in the morning. 
.thursday night...southwest winds 10 knots or less. mostly
cloudy. 
.friday...southwest winds less than 10 knots. a chance of
showers. 
.friday night...light and variable winds becoming northeast 5 to
10 knots. a chance of showers. 
.saturday...northeast winds 5 to 10 knots becoming northwest.
rain showers likely during the day, then a chance of rain showers
saturday night. 
.sunday...west winds 5 to 10 knots. a chance of rain showers. 
.monday...west winds 5 to 10 knots becoming southwest. a chance
of rain showers during the day. 

$$

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open lake forecast for lake america
national weather service buffalo ny
1002 pm est wed nov 4 2026

for waters beyond five nautical miles of shore on lake america

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 29.5 inch low will gradually move from the upper great 
lakes today towards ontario, before crossing quebec thursday and 
friday. following the passage of the low, a 29.9 inch trough will 
linger across the lower great lakes saturday. a secondary trough of 
29.7 inches will cross the great lakes sunday.


loz062-051000-
lake america open waters from the niagara river to hamlin beach-
1002 pm est wed nov 4 2026

.rest of tonight...south winds 5 to 10 knots. showers. waves 1 to
3 feet. 
.thursday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers early. waves 1 to 3 feet building
to 3 to 5 feet. 
.thursday night...southwest winds 15 to 20 knots diminishing to
10 to 15 knots. a chance of showers overnight. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.friday...southwest winds 5 to 10 knots becoming west. a chance
of showers. waves 2 feet or less. 
.friday night...west winds 5 to 15 knots. showers. waves 2 feet
or less. 
.saturday...west winds 10 to 15 knots becoming northwest 15 to
20 knots. showers likely. waves 2 to 4 feet. 
.sunday...west winds 15 to 25 knots. a chance of showers sunday
night. waves 3 to 6 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 
.monday...northwest winds 15 to 25 knots becoming west. a chance
of showers during the day. waves 3 to 6 feet. 

$$

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open lake forecast for lake america
national weather service buffalo ny
1002 pm est wed nov 4 2026

for waters beyond five nautical miles of shore on lake america

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 29.5 inch low will gradually move from the upper great 
lakes today towards ontario, before crossing quebec thursday and 
friday. following the passage of the low, a 29.9 inch trough will 
linger across the lower great lakes saturday. a secondary trough of 
29.7 inches will cross the great lakes sunday.


loz063>065-051000-
lake america open waters from hamlin beach to the saint lawrence
river-
1002 pm est wed nov 4 2026

.rest of tonight...south winds 10 to 15 knots. a chance of
showers late this evening, then showers after midnight. waves
2 to 4 feet. 
.thursday...south winds 15 to 20 knots becoming west. showers
likely early, then a chance of showers late in the morning. waves
2 to 4 feet. 
.thursday night...southwest winds 15 to 20 knots diminishing to
10 to 15 knots. a chance of showers overnight. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.friday...south winds 10 knots or less becoming northwest. a
chance of showers. waves 2 feet or less. 
.friday night...northwest winds 5 to 15 knots. showers. waves
1 to 3 feet. 
.saturday...northwest winds 10 to 15 knots increasing to 15 to
20 knots. showers. waves 2 to 4 feet building to 3 to 5 feet. 
.sunday...west winds 15 to 25 knots. a chance of showers. waves
3 to 6 feet building to 5 to 8 feet. waves occasionally around
10 feet. 
.monday...northwest winds 15 to 25 knots becoming west. a chance
of showers during the day. waves 5 to 8 feet subsiding to 3 to
6 feet. waves occasionally around 10 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
1003 pm est wed nov 4 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 of 29.40 inches over the upper midwest will move
northeast from the upper great lakes through central ontario and
into central quebec tonight through thursday evening. a trailing
cold front that extends southward from this low pressure will 
move across lake erie through thursday morning. a secondary and  
stronger cold front with pressure of 29.70 inches will push 
southward across lake erie friday morning. a trough averaging 
29.90 inches will linger across the eastern great lakes into this
weekend. high pressure of 30.10 inches will build into the ohio 
valley by sunday and monday.


lez061-166>169-050930-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm 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-
1003 pm est wed nov 4 2026

.rest of tonight...south winds 15 to 20 knots becoming southwest.
rain likely, then a chance of rain late. waves 3 to 6 feet. 
.thursday...southwest winds 15 to 25 knots. a slight chance of
rain early. waves 3 to 6 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 
.thursday night...southwest winds 15 to 20 knots. a chance of
rain overnight. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.friday...west winds 15 to 20 knots. rain likely. waves 2 to
3 feet. 
.friday night...west winds 15 to 25 knots. rain. waves 2 to
4 feet building to 3 to 6 feet. 
.saturday...northwest winds 15 to 25 knots. rain likely during
the day. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.sunday...west winds 15 to 25 knots. waves 3 to 5 feet building
to 4 to 7 feet. waves occasionally around 9 feet. 
.monday...west winds 15 to 25 knots becoming southwest. waves
3 to 6 feet. 

$$