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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 am edt sun jun 14 2026


slz022-024-142100-
saint lawrence river from cape vincent to saint regis
1003 am edt sun jun 14 2026

.rest of today...southwest winds 10 knots or less becoming
southeast. showers late this morning, then showers with a chance
of thunderstorms this afternoon. 
.tonight...southwest winds 10 knots or less becoming west.
showers with a chance of thunderstorms early, then a chance of
showers late in the evening. 
.monday...west winds 5 to 10 knots becoming southwest. a chance
of showers. 
.monday night...southwest winds 5 to 10 knots. becoming mainly
clear. 
.tuesday...southwest winds 5 to 10 knots becoming south. partly
cloudy. 
.wednesday...south winds 5 to 10 knots. showers likely with a
chance of thunderstorms. 
.thursday...southeast winds 15 to 20 knots becoming southwest.
showers.

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt sun jun 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 29.4 inch low will send a cold front through the lower 
great lakes this afternoon. following the passage of the front, a 
29.9 inch high will build across the region through monday, then 
exit off to our northeast tuesday while weakening to 29.8 inches. a 
29.4 inch low will then track north of the lake on wednesday, with 
its trailing cold front approaching the lake late in the day on 
wednesday. a second 29.4 inch surface low will pass across the upper 
great lakes thursday, with a warm front, followed by a cold front to 
sweep across the lake throughout the day.


loz063>065-142100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt sun jun 14 2026

.rest of today...southwest winds 5 to 15 knots becoming
northeast. a chance of showers and thunderstorms late this
morning, then showers with a chance of thunderstorms this
afternoon. waves 2 feet or less. 
.tonight...northwest winds 10 to 15 knots becoming west 15 to
20 knots. showers with a chance of thunderstorms early, then a
chance of showers late in the evening. waves 1 to 3 feet building
to 3 to 6 feet. 
.monday...west winds 15 to 20 knots. waves 3 to 6 feet. 
.monday night...west winds 15 to 20 knots becoming southwest
10 to 15 knots. waves 3 to 5 feet subsiding to 1 to 3 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. showers likely. waves 2 feet or less building to 2 to
4 feet. 
.thursday...south winds to 30 knots becoming west. showers during
the day, then a chance of showers thursday night. waves 5 to
8 feet building to 7 to 10 feet. waves occasionally around
13 feet. 

winds and waves higher in and near thunderstorms.

$$