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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 pm edt sat jun 27 2026


slz022-024-280900-
saint lawrence river from cape vincent to saint regis
1003 pm edt sat jun 27 2026

.overnight...light and variable winds. patchy fog late. 
.sunday...light and variable winds. patchy fog early. 
.sunday night...north winds less than 10 knots. mainly clear. 
.monday...light and variable winds. mostly sunny. 
.monday night...light and variable winds. mostly cloudy. 
.tuesday...south winds 5 to 10 knots becoming southwest. showers
likely with a chance of thunderstorms during the day, then a
chance of showers and thunderstorms tuesday night. 
.wednesday...southwest winds 10 knots or less. a chance of
showers and thunderstorms. 
.thursday...southwest winds 10 knots or less. a chance of showers
and thunderstorms. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt sat jun 27 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 30.1 inch high will build into the upper great lakes 
tonight before drifting east to quebec and new england by monday, 
then east of the new england coast by tuesday. another broad 30.1 
inch high will build into the ohio valley and mid atlantic by 
wednesday, where it will remain through at least thursday.


loz062-280900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt sat jun 27 2026

.overnight...east winds less than 10 knots. waves 1 foot or
less. 
.sunday...light and variable winds becoming east 5 to 10 knots.
waves 1 foot or less. 
.sunday night...northeast winds 10 knots or less becoming east.
waves 1 foot or less. 
.monday...east winds 10 knots or less. waves 2 feet or less. 
.monday night...east winds 10 knots or less becoming south. a
chance of showers overnight. waves 2 feet or less. 
.tuesday...southwest winds 10 to 15 knots. a chance of showers
during the day. waves 1 foot or less building to 1 to 3 feet. 
.wednesday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.thursday...west winds 5 to 15 knots becoming southwest. waves
1 to 2 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt sat jun 27 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 30.1 inch high will build into the upper great lakes 
tonight before drifting east to quebec and new england by monday, 
then east of the new england coast by tuesday. another broad 30.1 
inch high will build into the ohio valley and mid atlantic by 
wednesday, where it will remain through at least thursday.


loz063>065-280900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt sat jun 27 2026

.overnight...northeast winds less than 10 knots becoming
north. waves 1 foot or less. 
.sunday...north winds 10 knots or less. waves 1 foot or less. 
.sunday night...northwest winds 5 to 10 knots becoming light and
variable. waves 1 foot or less. 
.monday...light and variable winds becoming northeast 5 to
10 knots. waves 1 foot or less. 
.monday night...east winds 5 to 10 knots becoming south. a chance
of showers overnight. waves 1 foot or less. 
.tuesday...south winds 5 to 15 knots becoming southwest. a chance
of showers and thunderstorms. waves 2 feet or less. 
.wednesday...southwest winds 10 to 15 knots becoming west. waves
1 to 3 feet. 
.thursday...west winds 5 to 10 knots. a chance of showers
thursday night. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
912 pm edt sat jun 27 2026

for waters beyond five nautical miles of shore on lake erie

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...
high pressure 30.10 builds in from the north tonight. this ridge
will influence the region through late monday before a warm front
lifts north across the lake. high pressure 30.00 builds in across
the region through the middle of the week.


lez061-169-280815-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
912 pm edt sat jun 27 2026

.overnight...northeast winds 5 to 10 knots. waves 1 foot or
less. 
.sunday...northeast winds 5 to 10 knots. waves 2 feet or less. 
.sunday night...northeast winds 10 knots or less becoming east.
waves 2 feet or less. 
.monday...east winds less than 10 knots becoming northeast. waves
1 foot or less. 
.monday night...east winds 5 to 10 knots becoming south. waves
2 feet or less. 
.tuesday...southwest winds 5 to 10 knots. waves 1 to 2 feet. 
.wednesday...southwest winds 5 to 15 knots. waves 1 to 2 feet. 
.thursday...southwest winds 10 knots or less. a chance of showers
and thunderstorms thursday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$