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open lake forecast for lake ontario
national weather service buffalo ny
1000 pm edt mon sep 20 2021

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 30.3 inch high from new england to atlantic canada
will shift east through tuesday. a 29.6 inch low will cross ontario
canada on tuesday, with an associated cold front slowly approaching
the lake on wednesday. a wave of low pressure will develop along 
this front as it slowly moves across the eastern great lakes 
through thursday.


loz062-210900-
lake ontario open waters from the niagara river to hamlin beach-
1000 pm edt mon sep 20 2021

.overnight...south winds 15 to 20 knots diminishing to
10 to 15 knots. waves 1 to 3 feet. 
.tuesday...south winds 10 to 15 knots. waves 1 to 3 feet. 
.tuesday night...south winds 10 to 15 knots. a chance of showers
in the evening, then showers likely overnight. waves 1 to 3 feet.
.wednesday...south winds 5 to 15 knots becoming north. showers.
waves 1 to 3 feet. 
.wednesday night...north winds 15 to 20 knots becoming northeast
10 to 15 knots. showers. waves 2 to 3 feet. 
.thursday...east winds 10 to 15 knots becoming southwest.
showers. waves 1 to 3 feet. 
.friday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers during the day. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.saturday...southwest winds 10 to 15 knots becoming west. a
chance of showers. waves 1 to 2 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1000 pm edt mon sep 20 2021

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 30.3 inch high from new england to atlantic canada
will shift east through tuesday. a 29.6 inch low will cross ontario
canada on tuesday, with an associated cold front slowly approaching
the lake on wednesday. a wave of low pressure will develop along 
this front as it slowly moves across the eastern great lakes 
through thursday.


loz063>065-210900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1000 pm edt mon sep 20 2021

.overnight...south winds 15 to 20 knots. waves 2 to 4 feet
building to 3 to 5 feet. 
.tuesday...south winds 15 to 20 knots. waves 3 to 5 feet
subsiding to 2 to 4 feet. 
.tuesday night...south winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers. waves 2 to 4 feet subsiding to
1 to 3 feet. 
.wednesday...south winds 15 to 20 knots becoming east. showers
likely. waves 1 to 3 feet. 
.wednesday night...northeast winds 15 to 20 knots becoming
southeast 10 to 15 knots. showers. waves 1 to 3 feet. 
.thursday...south winds 10 to 15 knots becoming southwest.
showers. waves 1 to 3 feet. 
.friday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. showers likely during the day. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.saturday...southwest winds 10 to 15 knots becoming west. a
chance of showers. waves 1 to 3 feet. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1000 pm edt mon sep 20 2021


slz022-024-210900-
saint lawrence river from cape vincent to saint regis
1000 pm edt mon sep 20 2021

.overnight...south winds 5 to 10 knots. partly cloudy. 
.tuesday...south winds 5 to 15 knots. partly to mostly sunny. 
.tuesday night...south winds 5 to 10 knots. a chance of showers
overnight. 
.wednesday...south winds 5 to 15 knots becoming west. showers
likely. 
.wednesday night...northwest winds 5 to 10 knots becoming
southeast. showers.
.thursday...southeast winds 5 to 10 knots becoming south. showers
likely. 
.friday...southwest winds 5 to 15 knots becoming south. showers
likely during the day, then a chance of showers friday night. 
.saturday...south winds 10 knots or less becoming southwest. a
chance of showers saturday night. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
951 pm edt mon sep 20 2021

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...
low pressure 29.50 inches will move through northern ontario 
tonight into tuesday and extend a cold front across the lake on 
tuesday. this front will stall across lake erie on tuesday 
evening. meanwhile, low pressure 30.00 inches will develop over 
the tennessee river valley and move northeast along the front on 
wednesday, deepening to 29.60 inches over the upper ohio valley. 
the low will then move into southern quebec by thursday. high
pressure 30.00 inches may briefly build over the area by friday, 
but a cold front will move east across the lake on saturday.


lez061-168-169-210830-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
951 pm edt mon sep 20 2021

.rest of tonight...southeast winds 15 to 25 knots becoming south.
a chance of showers with a slight chance of thunderstorms late
this evening, then a slight chance of showers after midnight. a
chance of showers with a slight chance of thunderstorms late.
waves 2 to 4 feet building to 3 to 5 feet. 
.tuesday...south winds 15 to 25 knots diminishing to 10 to
15 knots. a chance of showers with a slight chance of
thunderstorms early, then a slight chance of showers late in the
morning. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.tuesday night...south winds 10 to 15 knots increasing to 15 to
20 knots. showers with a chance of thunderstorms overnight. waves
1 to 3 feet building to 2 to 4 feet. 
.wednesday...south winds 15 to 25 knots becoming north. rain with
a chance of thunderstorms in the morning, then rain in the
afternoon. waves 3 to 6 feet. 
.wednesday night...north winds 15 to 25 knots becoming northwest.
rain. waves 4 to 7 feet subsiding to 2 to 4 feet. waves
occasionally around 9 feet. 
.thursday...west winds 15 to 20 knots becoming southwest 10 to
15 knots. a chance of rain during the day. waves 2 to 4 feet. 
.friday...southwest winds 10 to 15 knots becoming south. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.saturday...south winds 10 to 15 knots becoming southwest. a
chance of rain. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$