fzus61 kbuf 180902
glflo 
expires:202511181600;;609818

open lake forecast for lake ontario
national weather service buffalo ny
402 am est tue nov 18 2025

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 28.8 inch low over labrador today will continue to 
move northeast into the north atlantic through wednesday. a 30.2 
inch high centered over the upper great lakes today will build to 
the lower great lakes wednesday and to new england thursday. a cold 
front will then move east across the lower great lakes friday, 
followed by a 30.0 inch high building into the ohio valley and lower 
great lakes saturday.


loz062-181600-
lake ontario open waters from the niagara river to hamlin beach-
402 am est tue nov 18 2025

.today...west winds 5 to 15 knots. waves 2 to 4 feet subsiding to
1 to 3 feet. 
.tonight...northwest winds 10 knots or less becoming north. waves
2 feet or less. 
.wednesday...north winds 5 to 10 knots becoming light and
variable. waves 1 foot or less. 
.wednesday night...light and variable winds. waves 1 foot or
less. 
.thursday...southeast winds 10 knots or less becoming southwest
10 to 15 knots. rain showers likely thursday night. waves 2 feet
or less. 
.friday...west winds 15 to 20 knots becoming northwest 10 to
15 knots. rain showers likely during the day. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.saturday...northwest winds around 10 knots becoming west. waves
1 to 2 feet. 

$$

fzus61 kbuf 180902
glflo 
expires:202511181600;;609819

open lake forecast for lake ontario
national weather service buffalo ny
402 am est tue nov 18 2025

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 28.8 inch low over labrador today will continue to 
move northeast into the north atlantic through wednesday. a 30.2 
inch high centered over the upper great lakes today will build to 
the lower great lakes wednesday and to new england thursday. a cold 
front will then move east across the lower great lakes friday, 
followed by a 30.0 inch high building into the ohio valley and lower 
great lakes saturday.


loz063-181600-
lake ontario open waters from hamlin beach to sodus bay-
402 am est tue nov 18 2025

.today...northwest winds 15 to 20 knots becoming west 10 to
15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.tonight...west winds 10 knots or less becoming north. waves 1 to
2 feet. 
.wednesday...north winds 10 knots or less becoming northwest.
waves 1 foot or less. 
.wednesday night...light and variable winds. waves 1 foot or
less. 
.thursday...southeast winds 10 knots or less becoming south 10 to
15 knots. rain showers likely thursday night. waves 1 foot or
less building to 1 to 3 feet. 
.friday...southwest winds 15 to 20 knots becoming northwest 10 to
15 knots. rain showers likely during the day, then a chance of
rain showers friday night. waves 2 to 4 feet building to 3 to
6 feet, then subsiding to 2 to 4 feet. 
.saturday...northwest winds 10 to 15 knots becoming west. waves
1 to 3 feet. 

$$

fzus61 kbuf 180902
glflo 
expires:202511181600;;609820

open lake forecast for lake ontario
national weather service buffalo ny
402 am est tue nov 18 2025

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 28.8 inch low over labrador today will continue to 
move northeast into the north atlantic through wednesday. a 30.2 
inch high centered over the upper great lakes today will build to 
the lower great lakes wednesday and to new england thursday. a cold 
front will then move east across the lower great lakes friday, 
followed by a 30.0 inch high building into the ohio valley and lower 
great lakes saturday.


loz064-065-181600-
lake ontario open waters from sodus bay to the saint lawrence
river-
402 am est tue nov 18 2025

.today...northwest winds 15 to 20 knots becoming west 10 to
15 knots. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.tonight...west winds 5 to 10 knots becoming northwest. waves
1 to 3 feet subsiding to 1 foot or less. 
.wednesday...north winds 10 knots or less becoming west. waves
1 foot or less. 
.wednesday night...light and variable winds. waves 1 foot or
less. 
.thursday...southeast winds 5 to 15 knots becoming south 15 to
20 knots. rain showers likely thursday night. waves 2 feet or
less building to 2 to 4 feet. 
.friday...southwest winds 15 to 20 knots becoming northwest 10 to
15 knots. rain showers during the day, then a chance of rain
showers friday night. waves 3 to 6 feet subsiding to 2 to 4 feet.
.saturday...northwest winds 5 to 15 knots becoming west. waves
1 to 3 feet. 

$$

fzus61 kbuf 180902
glfsl 
expires:202511181600;;609788

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 am est tue nov 18 2025


slz022-181600-
saint lawrence river from cape vincent to ogdensburg-
402 am est tue nov 18 2025

.today...west winds 10 knots or less. partly to mostly sunny. 
.tonight...west winds less than 10 knots. mainly clear through
the early overnight, then becoming partly cloudy. 
.wednesday...light and variable winds. sunny.
.wednesday night...light and variable winds. partly cloudy in the
evening, then becoming mostly cloudy. 
.thursday...light and variable winds becoming south 5 to
10 knots. rain showers likely thursday night. 
.friday...southwest winds 10 knots or less becoming west. rain
showers during the day, then a chance of rain showers friday
night. 
.saturday...west winds less than 10 knots becoming southwest.
mostly cloudy. 

$$