fzus61 kbuf 202003
glfsl 
expires:202609210300;;780875

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 pm edt sun sep 20 2026


slz022-024-210300-
saint lawrence river from cape vincent to saint regis
403 pm edt sun sep 20 2026

.tonight...northeast winds less than 10 knots becoming north
10 to 15 knots. partly to mostly cloudy. 
.monday...north winds 5 to 15 knots becoming northeast. partly
sunny in the morning, then becoming mostly cloudy. 
.monday night...northeast winds 5 to 10 knots. mostly cloudy. 
.tuesday...northeast winds 5 to 10 knots. sunny.
.tuesday night...northeast winds 5 to 10 knots. mainly clear. 
.wednesday...northeast winds 10 knots or less. mainly clear. 
.thursday...northeast winds 10 knots or less. partly cloudy. 
.friday...northeast winds 10 knots or less becoming north. partly
cloudy. 

$$

fzus61 kbuf 202002
glflo 
expires:202609210300;;780821

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sun sep 20 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 29.9 inch inverted trough draped from the ohio valley to new york 
state will drift southeastward and away from the lake this afternoon 
and tonight as a 30.4 inch high builds southeastward across ontario 
province. this high will then strengthen to 30.6 inches as it slowly 
drifts across quebec through thursday.


loz062-210300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt sun sep 20 2026

.tonight...north winds 5 to 10 knots becoming northeast and
increasing to 15 to 25 knots after midnight. waves 1 to 3 feet
building to 5 to 7 feet. waves occasionally around 9 feet. 
.monday...northeast winds 15 to 25 knots. waves 3 to 6 feet. 
.monday night...northeast winds 15 to 25 knots. waves 3 to 6 feet
building to 5 to 7 feet. waves occasionally around 9 feet. 
.tuesday...northeast winds 20 to 25 knots becoming east. waves
5 to 8 feet. waves occasionally around 10 feet. 
.tuesday night...east winds 15 to 25 knots. waves 5 to 8 feet.
waves occasionally around 10 feet. 
.wednesday...east winds 15 to 25 knots. waves 3 to 6 feet. 
.thursday...east winds 10 to 15 knots becoming northeast. waves
2 to 4 feet. 
.friday...northeast winds 5 to 15 knots. waves 2 feet or less. 

$$

fzus61 kbuf 202002
glflo 
expires:202609210300;;780822

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sun sep 20 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 29.9 inch inverted trough draped from the ohio valley to new york 
state will drift southeastward and away from the lake this afternoon 
and tonight as a 30.4 inch high builds southeastward across ontario 
province. this high will then strengthen to 30.6 inches as it slowly 
drifts across quebec through thursday.


loz063>065-210300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt sun sep 20 2026

.tonight...northeast winds 10 to 15 knots increasing to 15 to
25 knots. waves 1 to 3 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 
.monday...northeast winds 15 to 25 knots. waves 4 to 7 feet
subsiding to 3 to 6 feet. waves occasionally around 9 feet. 
.monday night...northeast winds 15 to 25 knots. waves 2 to 4 feet
building to 4 to 7 feet. waves occasionally around 9 feet. 
.tuesday...northeast winds 15 to 25 knots. waves 4 to 7 feet
subsiding to 3 to 6 feet. waves occasionally around 9 feet. 
.tuesday night...northeast winds 15 to 20 knots becoming east.
waves 3 to 5 feet. 
.wednesday...east winds 15 to 20 knots. waves 3 to 5 feet
subsiding to 2 to 4 feet. 
.thursday...east winds 10 to 15 knots becoming northeast. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.friday...northeast winds 10 to 15 knots. waves 1 to 3 feet. 

$$