fzus61 kbuf 062002
glflo 
expires:202507070300;;989667

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sun jul 6 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 broad 30.1 inch high will continue to drift further 
east into the atlantic today as a weakening 29.8 inch tropical low 
moves into the carolinas. a wavy cold frontal boundary will 
concurrently move across the upper great lakes and into southern 
ontario before crossing the lower great lakes monday. in the wake of 
the frontal passage, a 30.1 inch high will build across the lower 
great lakes tuesday and into wednesday. a weak and broad 29.9 inch 
surface low will track just north of the lake for thursday into 
early friday.


loz063>065-070300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt sun jul 6 2025

.tonight...southwest winds 5 to 15 knots becoming south. waves
1 to 3 feet. 
.monday...south winds 5 to 15 knots becoming west. showers with
thunderstorms likely in the afternoon. waves 1 to 2 feet. 
.monday night...west winds 5 to 10 knots becoming north. a chance
of showers and thunderstorms in the evening, then a chance of
showers overnight. waves around 1 foot. 
.tuesday...north winds 5 to 10 knots becoming west. waves 1 foot
or less. 
.tuesday night...west winds less than 10 knots becoming
southwest. waves 1 foot or less. 
.wednesday...south winds less than 10 knots becoming southeast.
waves 1 foot or less. 
.thursday...southeast winds 5 to 10 knots. a chance of showers
and thunderstorms. waves 1 foot or less. 
.friday...north winds 5 to 10 knots becoming southeast. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 062002
glfsl 
expires:202507070300;;989664

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 pm edt sun jul 6 2025


slz022-070300-
saint lawrence river from cape vincent to ogdensburg-
402 pm edt sun jul 6 2025

...small craft advisory in effect until 8 pm edt this evening...

.tonight...southwest winds 15 to 20 knots becoming south and
diminishing to 10 knots or less after midnight. mainly clear this
evening, then becoming partly cloudy. 
.monday...south winds 5 to 10 knots becoming west. a chance of
showers early. a chance of showers and thunderstorms in the
afternoon. 
.monday night...north winds less than 10 knots. showers with a
chance of thunderstorms in the evening, then a chance of showers
overnight. 
.tuesday...north winds less than 10 knots. mostly cloudy in the
morning, then becoming partly sunny. 
.tuesday night...northeast winds less than 10 knots. partly to
mostly cloudy. 
.wednesday...light and variable winds. partly cloudy, then
becoming mostly cloudy. 
.thursday...southeast winds less than 10 knots. a chance of
showers and thunderstorms. 
.friday...northeast winds less than 10 knots becoming southeast.
partly cloudy. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 062002
glfsl 
expires:202507070300;;989665

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 pm edt sun jul 6 2025


slz024-070300-
saint lawrence river from ogdensburg to saint regis-
402 pm edt sun jul 6 2025

.tonight...southwest winds 15 to 20 knots becoming light and
variable. showers likely late. 
.monday...southeast winds 10 knots or less becoming north.
showers likely early. showers with thunderstorms likely in the
afternoon. 
.monday night...north winds less than 10 knots. showers with a
chance of thunderstorms in the evening, then showers likely
overnight. 
.tuesday...light and variable winds. mostly cloudy in the
morning, then becoming partly sunny. 
.tuesday night...light and variable winds. partly to mostly
cloudy. 
.wednesday...light and variable winds. partly cloudy, then
becoming mostly cloudy. 
.thursday...east winds less than 10 knots. a chance of showers
and thunderstorms. 
.friday...northeast winds less than 10 knots. a chance of
showers. 

winds and waves higher in and near thunderstorms.

$$