fzus61 kbuf 040203
glflo 
expires:202608040900;;582294

open lake forecast for lake ontario
national weather service buffalo ny
1003 pm edt mon aug 3 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 ridge averaging 30.0 inches builds eastward across the 
lake ontario region through tuesday and then exits slowly toward new 
england through saturday. a cold front should approach lake ontario 
slowly from the northwest this thursday through saturday.


loz062-040900-
lake ontario open waters from the niagara river to hamlin beach-
1003 pm edt mon aug 3 2026

.overnight...northwest winds 10 knots or less becoming
west. waves 1 to 3 feet. 
.tuesday...southwest winds 10 knots or less becoming north. waves
1 foot or less. 
.tuesday night...east winds 10 knots or less becoming south.
waves 1 foot or less. 
.wednesday...southwest winds less than 10 knots. waves 1 foot or
less. 
.wednesday night...east winds 10 knots or less becoming
southwest. waves 1 foot or less. 
.thursday...southwest winds less than 10 knots. a chance of
showers during the day, then a chance of showers and
thunderstorms thursday night. waves 1 foot or less. 
.friday...west winds less than 10 knots becoming southwest. a
chance of showers and thunderstorms. waves 1 foot or less. 
.saturday...southwest winds 10 knots or less. waves 1 foot or
less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 040203
glflo 
expires:202608040900;;582295

open lake forecast for lake ontario
national weather service buffalo ny
1003 pm edt mon aug 3 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 ridge averaging 30.0 inches builds eastward across the 
lake ontario region through tuesday and then exits slowly toward new 
england through saturday. a cold front should approach lake ontario 
slowly from the northwest this thursday through saturday.


loz063>065-040900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 pm edt mon aug 3 2026

.overnight...west winds 5 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.tuesday...west winds 5 to 10 knots becoming northwest. waves
2 feet or less. 
.tuesday night...east winds 10 knots or less becoming south.
waves 1 foot or less. 
.wednesday...south winds 5 to 15 knots becoming east less than
10 knots. waves 1 foot or less. 
.wednesday night...east winds 10 knots or less becoming south. a
chance of showers overnight. waves 1 foot or less. 
.thursday...south winds 5 to 10 knots becoming southwest. a
chance of showers and thunderstorms. waves 1 foot or less. 
.friday...west winds 10 knots or less becoming southwest. a
chance of showers and thunderstorms. waves 1 foot or less. 
.saturday...southwest winds 5 to 10 knots. a chance of showers
during the day. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 040203
glfsl 
expires:202608040900;;582307

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 pm edt mon aug 3 2026


slz022-024-040900-
saint lawrence river from cape vincent to saint regis
1003 pm edt mon aug 3 2026

.overnight...southwest winds less than 10 knots becoming
west. patchy fog late. 
.tuesday...southwest winds 10 knots or less. patchy fog early. 
.tuesday night...southwest winds less than 10 knots. mainly
clear. 
.wednesday...south winds 10 knots or less becoming southwest.
sunny.
.wednesday night...southwest winds less than 10 knots. mainly
clear in the evening, then becoming partly cloudy. 
.thursday...south winds 10 knots or less becoming southwest.
showers likely with a chance of thunderstorms. 
.friday...southwest winds less than 10 knots. showers likely with
a chance of thunderstorms. 
.saturday...southwest winds 10 knots or less. becoming mainly
clear. 

winds and waves higher in and near thunderstorms.

$$