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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt tue jun 16 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 29.9 inch high nosing in over the region will exit off 
to the east today. a 29.4 inch low will then track north of the lake 
on wednesday, with its front moving through late in the day. a 
deepening surface low will then track across the great lakes to 
southern quebec wednesday night and thursday, while pushing a cold 
front through the region. the low will then make its way to the 
canadian maritimes friday, while a 29.9 inch high builds across the 
upper great lakes.


loz062-161500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt tue jun 16 2026

.today...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.tonight...south winds 5 to 10 knots. a chance of showers late.
waves 1 to 2 feet. 
.wednesday...south winds 5 to 15 knots. a chance of showers.
waves 1 to 2 feet. 
.wednesday night...south winds 5 to 10 knots becoming southeast
and increasing to 15 to 20 knots. showers likely in the evening,
then showers overnight. waves 1 to 2 feet building to 2 to
4 feet. 
.thursday...southwest winds to 30 knots becoming west. showers
during the day. waves 6 to 10 feet subsiding to 4 to 7 feet.
waves occasionally around 13 feet. 
.friday...west winds 15 to 25 knots. waves 4 to 7 feet subsiding
to 3 to 6 feet. waves occasionally around 9 feet. 
.saturday...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 2 to 3 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt tue jun 16 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 29.9 inch high nosing in over the region will exit off 
to the east today. a 29.4 inch low will then track north of the lake 
on wednesday, with its front moving through late in the day. a 
deepening surface low will then track across the great lakes to 
southern quebec wednesday night and thursday, while pushing a cold 
front through the region. the low will then make its way to the 
canadian maritimes friday, while a 29.9 inch high builds across the 
upper great lakes.


loz063>065-161500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt tue jun 16 2026

.today...southwest winds 5 to 15 knots becoming south. waves
2 feet or less. 
.tonight...south winds 5 to 15 knots. a chance of showers late.
waves 2 feet or less. 
.wednesday...south winds 5 to 15 knots becoming southeast. a
chance of showers in the morning, then showers likely in the
afternoon. waves 2 feet or less. 
.wednesday night...southeast winds 5 to 15 knots increasing to
15 to 25 knots. showers likely in the evening, then showers
overnight. waves 2 feet or less building to 3 to 5 feet. 
.thursday...south winds to 30 knots becoming west. showers during
the day, then a chance of showers thursday night. waves 6 to
9 feet building to 8 to 11 feet, then subsiding to 6 to 9 feet.
waves occasionally around 14 feet. 
.friday...west winds 20 to 25 knots. waves 5 to 9 feet subsiding
to 4 to 7 feet. waves occasionally around 11 feet. 
.saturday...west winds to 30 knots diminishing to 15 to 20 knots.
a chance of showers. waves 5 to 8 feet subsiding to 3 to 5 feet.
waves occasionally around 10 feet. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 am edt tue jun 16 2026


slz022-024-161500-
saint lawrence river from cape vincent to saint regis
402 am edt tue jun 16 2026

.today...southwest winds 5 to 15 knots. sunny.
.tonight...southwest winds 10 knots or less becoming south.
mainly clear through the early overnight, then becoming partly
cloudy. 
.wednesday...south winds 5 to 10 knots. a chance of showers in
the morning, then showers likely with a chance of thunderstorms
in the afternoon. 
.wednesday night...south winds 10 knots or less becoming
southeast. showers likely with a chance of thunderstorms in the
evening, then showers likely overnight. 
.thursday...southeast winds 15 to 20 knots becoming southwest.
showers with a chance of thunderstorms during the day, then
showers thursday night. 
.friday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. showers with a chance of thunderstorms. 
.saturday...west winds 5 to 10 knots. showers likely with a
chance of thunderstorms. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
issued by national weather service buffalo ny
339 am edt tue jun 16 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 30.00 inches will persist into the first part of 
today before low pressure 29.70 inches moves a cold front east 
this afternoon and into the evening. this low pressure will 
deepen to 29.40 inches over the region late wednesday into 
thursday, moving a strong cold front east wednesday night. a 
trough averaging 29.90 inches will linger into the weekend.


lez061-167>169-161415-
lake erie open waters from ripley to buffalo ny-
lake erie open waters from willowick to geneva-on-the-lake oh-
lake erie open waters from geneva-on-the-lake to conneaut oh-
lake erie open waters from conneaut oh to ripley ny-
339 am edt tue jun 16 2026

.today...southwest winds 15 to 20 knots diminishing to 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tonight...south winds 10 to 15 knots becoming southwest 15 to
20 knots. showers likely with a chance of thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight. waves 1 to 3 feet building to 3 to 5 feet. 
.wednesday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers in the morning. waves 3 to 5 feet
subsiding to 2 to 4 feet. 
.wednesday night...south winds 5 to 10 knots increasing to
30 knots. rain. waves 1 to 3 feet building to 6 to 9 feet. waves
occasionally around 11 feet. 
.thursday...southwest winds to 30 knots becoming west and
diminishing to 15 to 20 knots. a chance of rain during the day.
waves 6 to 10 feet subsiding to 3 to 5 feet. waves occasionally
around 13 feet. 
.friday...west winds 15 to 20 knots becoming northwest. waves
2 to 4 feet. 
.saturday...northwest winds 15 to 20 knots becoming west 5 to
15 knots. waves 3 to 5 feet subsiding to 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$