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ON- Lake Ontario

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fzus61 kbuf 140805
glfsl 
expires:202604141500;;341947

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
405 am edt tue apr 14 2026


slz022-024-141500-
saint lawrence river from cape vincent to saint regis
405 am edt tue apr 14 2026

.today...northeast winds 10 knots or less becoming southwest
10 to 15 knots. patchy fog early. showers late this morning.
showers with a chance of thunderstorms this afternoon. 
.tonight...northwest winds 5 to 15 knots becoming northeast less
than 10 knots. a chance of showers in the evening. 
.wednesday...east winds less than 10 knots becoming north.
showers.
.wednesday night...east winds less than 10 knots becoming south.
a chance of showers in the evening, then showers likely
overnight. 
.thursday...south winds 10 knots or less becoming west. showers
likely. 
.friday...north winds 10 knots or less becoming east. a chance of
showers. 
.saturday...southeast winds 5 to 15 knots becoming south. a
chance of showers during the day, then showers likely saturday
night. 

winds and waves higher in and near thunderstorms.

$$
fzus61 kbuf 140804
glflo 
expires:202604141500;;341872

open lake forecast for lake ontario
national weather service buffalo ny
404 am edt tue apr 14 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 29.6 inch low near lake huron this morning will move 
east and reach the saint lawrence valley by this evening while 
weakening. another 29.6 inch low will move into the central great 
lakes wednesday night before reaching southern quebec thursday 
night, then drifting off the new england coast by friday night. a 
30.0 inch high is then forecast to build from the central great 
lakes friday to the lower great lakes saturday morning, then off the 
east coast saturday night.


loz062-141500-
lake ontario open waters from the niagara river to hamlin beach-
404 am edt tue apr 14 2026

.today...southeast winds 5 to 10 knots becoming southwest and
increasing to 15 to 20 knots. areas of fog through early
afternoon. showers with a chance of thunderstorms this morning,
then a chance of showers and thunderstorms this afternoon. waves
1 to 2 feet building to 2 to 4 feet. 
.tonight...west winds 5 to 15 knots becoming east. showers with a
chance of thunderstorms late. waves 2 to 4 feet subsiding to 1 to
3 feet. 
.wednesday...southeast winds 10 to 15 knots becoming southwest.
showers with a chance of thunderstorms in the morning, then
showers likely in the afternoon. waves 1 to 2 feet. 
.wednesday night...southwest winds 5 to 15 knots. showers with a
chance of thunderstorms. waves 1 to 2 feet. 
.thursday...southwest winds 10 to 15 knots becoming west.
showers. waves 1 to 3 feet. 
.friday...northwest winds 5 to 10 knots becoming east. a chance
of showers during the day. waves 2 feet or less. 
.saturday...southeast winds 5 to 15 knots becoming southwest and
increasing to 15 to 25 knots. a chance of showers during the day,
then showers likely saturday night. waves 1 to 3 feet building to
3 to 6 feet. 

winds and waves higher in and near thunderstorms.

$$
fzus61 kbuf 140804
glflo 
expires:202604141500;;341873

open lake forecast for lake ontario
national weather service buffalo ny
404 am edt tue apr 14 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 29.6 inch low near lake huron this morning will move 
east and reach the saint lawrence valley by this evening while 
weakening. another 29.6 inch low will move into the central great 
lakes wednesday night before reaching southern quebec thursday 
night, then drifting off the new england coast by friday night. a 
30.0 inch high is then forecast to build from the central great 
lakes friday to the lower great lakes saturday morning, then off the 
east coast saturday night.


loz063>065-141500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
404 am edt tue apr 14 2026

.today...southeast winds 5 to 15 knots becoming southwest 15 to
20 knots. areas of fog through early afternoon. showers with a
chance of thunderstorms. waves 2 feet or less building to 2 to
4 feet. 
.tonight...west winds 5 to 15 knots becoming east. a chance of
showers and thunderstorms late. waves 2 to 4 feet subsiding to
1 to 3 feet. 
.wednesday...southeast winds 5 to 10 knots becoming west. showers
with a chance of thunderstorms. waves 2 feet or less. 
.wednesday night...southwest winds 5 to 10 knots. showers likely
with a chance of thunderstorms. waves 1 foot or less. 
.thursday...southwest winds 5 to 10 knots becoming west. showers
likely during the day, then a chance of showers thursday night.
waves 2 feet or less. 
.friday...northwest winds 5 to 10 knots becoming east. a chance
of showers. waves 2 feet or less. 
.saturday...southeast winds 10 to 15 knots becoming southwest and
increasing to 30 knots. a chance of showers during the day, then
showers likely saturday night. waves 1 to 3 feet building to 4 to
7 feet. waves occasionally around 9 feet. 

winds and waves higher in and near thunderstorms.

$$
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