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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt mon sep 28 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 29.7 inch low just south of long island this morning 
will drift northeast along the new england coast through tuesday 
while filling to 29.8 inches. this low will finally dissipate over 
the north atlantic wednesday as a 30.1 inch high builds to just off 
the mid atlantic coast. a cold front over the upper great lakes 
wednesday night will cross the lower great lakes thursday night. a 
30.4 inch high is then forecast to build into the upper great lakes 
friday and the lower great lakes by saturday.


loz063>065-282100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt mon sep 28 2026

.this afternoon...northeast winds 10 to 15 knots. waves 1 to
3 feet. 
.tonight...north winds 5 to 15 knots. waves 2 feet or less. 
.tuesday...north winds 10 knots or less. waves 1 foot or less. 
.tuesday night...light and variable winds becoming south 5 to
10 knots. waves 1 foot or less. 
.wednesday...south winds 5 to 15 knots. waves 2 feet or less. 
.thursday...south winds 15 to 20 knots becoming west. a chance of
showers thursday night. waves 1 to 3 feet building to 2 to
4 feet. 
.friday...west winds 10 to 15 knots becoming northwest. a chance
of showers during the day. waves 2 to 4 feet subsiding to 1 to
3 feet. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 am edt mon sep 28 2026


slz022-024-281500-
saint lawrence river from cape vincent to saint regis
403 am edt mon sep 28 2026

.today...northeast winds 5 to 10 knots. cloudy.
.tonight...northeast winds 10 knots or less becoming north.
mostly cloudy through the early overnight, then becoming partly
cloudy. 
.tuesday...north winds less than 10 knots. sunny.
.tuesday night...light and variable winds. clear in the evening,
then becoming partly cloudy. 
.wednesday...south winds 10 knots or less. mostly cloudy. 
.thursday...south winds 5 to 15 knots becoming southwest. a
chance of showers thursday night. 
.friday...west winds 10 knots or less becoming northwest. a
chance of showers during the day. 

$$