fzus61 kbuf 122003
glfsl 
expires:202606130300;;635497

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 pm edt fri jun 12 2026


slz022-024-130300-
saint lawrence river from cape vincent to saint regis
403 pm edt fri jun 12 2026

.tonight...southwest winds 5 to 15 knots. partly cloudy early,
then becoming mainly clear. 
.saturday...southwest winds 5 to 10 knots. sunny.
.saturday night...southwest winds 5 to 10 knots becoming south. a
chance of showers overnight. 
.sunday...southwest winds 5 to 10 knots. a chance of showers in
the morning, then showers with a chance of thunderstorms in the
afternoon. 
.sunday night...southwest winds 5 to 10 knots. showers with a
chance of thunderstorms in the evening, then showers likely
overnight. 
.monday...west winds 5 to 15 knots becoming southwest less than
10 knots. partly cloudy. 
.tuesday...southwest winds 10 knots or less becoming south.
partly cloudy. 
.wednesday...south winds 5 to 10 knots. a chance of showers. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 122002
glflo 
expires:202606130300;;635465

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt fri jun 12 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 30.0 inch high will ridge across the lower great lakes 
tonight through sunday morning. a cold front crosses the region 
later sunday and sunday night. the eastern edge of a 30.1 inch high 
over the plains states will push over the lake on monday with a 
trough averaging 29.8 inches to cross the lake on tuesday. a 29.4 
inch low will track north of the lake on wednesday, with its 
trailing cold front approaching the lake late in the day on 
wednesday.


loz062-130300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt fri jun 12 2026

.tonight...west winds 15 to 20 knots becoming southwest 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.saturday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet. 
.saturday night...southwest winds 15 to 20 knots. waves 1 to
3 feet. 
.sunday...southwest winds 10 to 15 knots becoming west. showers
in the morning, then showers with a chance of thunderstorms in
the afternoon. waves 1 to 3 feet. 
.sunday night...west winds 10 to 15 knots increasing to 15 to
20 knots. showers with a chance of thunderstorms in the evening.
waves 2 to 4 feet. 
.monday...west winds 15 to 20 knots becoming southwest 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 2 feet. 
.tuesday...southwest winds 5 to 10 knots becoming south. a chance
of showers tuesday night. waves 2 feet or less. 
.wednesday...south winds 5 to 15 knots. a chance of showers
during the day, then showers likely wednesday night. waves 1 to
2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 122002
glflo 
expires:202606130300;;635466

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt fri jun 12 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 30.0 inch high will ridge across the lower great lakes 
tonight through sunday morning. a cold front crosses the region 
later sunday and sunday night. the eastern edge of a 30.1 inch high 
over the plains states will push over the lake on monday with a 
trough averaging 29.8 inches to cross the lake on tuesday. a 29.4 
inch low will track north of the lake on wednesday, with its 
trailing cold front approaching the lake late in the day on 
wednesday.


loz063>065-130300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt fri jun 12 2026

.tonight...west winds 15 to 25 knots becoming southwest and
diminishing to 5 to 15 knots. waves 3 to 6 feet subsiding to 1 to
3 feet. 
.saturday...west winds 5 to 15 knots. waves 1 to 3 feet. 
.saturday night...southwest winds 10 to 15 knots becoming south.
waves 1 to 2 feet. 
.sunday...south winds 10 to 15 knots becoming west. showers
likely in the morning, then showers with a chance of
thunderstorms in the afternoon. waves 1 to 2 feet. 
.sunday night...west winds 10 to 15 knots increasing to 15 to
20 knots. showers with a chance of thunderstorms in the evening,
then a chance of showers overnight. waves 1 to 3 feet building to
3 to 6 feet. 
.monday...west winds 15 to 20 knots becoming southwest 5 to
15 knots. waves 3 to 6 feet subsiding to 1 to 2 feet. 
.tuesday...southwest winds 5 to 15 knots becoming south. waves
2 feet or less. 
.wednesday...south winds 5 to 15 knots increasing to 15 to
20 knots. a chance of showers during the day, then showers likely
wednesday night. waves 2 feet or less building to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$