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open lake forecast for lake ontario
national weather service buffalo ny
1002 am est sat dec 13 2025

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 29.6 inch low over western quebec this late morning 
will advance towards southern quebec tonight while weakening to 29.9 
inches, all while dragging an attendant cold front across the lake 
through the early afternoon. a strong 30.8 inch high over the mid 
mississippi valley sunday will then settle across the southeast 
states monday and tuesday while weakening to 30.3 inches. meanwhile, 
a strong 29.1 inch low over the southern canadian prairies tuesday 
will strengthen to 28.7 inches while quickly shifting east across 
northwestern ontario and into central quebec by wednesday...while 
pushing an attendant warm front across the lake tuesday, followed by 
a cold front on wednesday.


loz062-132200-
lake ontario open waters from the niagara river to hamlin beach-
1002 am est sat dec 13 2025

.rest of today...west winds to 30 knots. snow showers likely late
this morning. waves 6 to 9 feet building to 8 to 11 feet. waves
occasionally around 14 feet. 
.tonight...west winds 20 to 25 knots. a chance of snow showers
early, then snow showers. a chance of snow showers late. waves
7 to 10 feet subsiding to 5 to 8 feet. waves occasionally around
13 feet. 
.sunday...west winds 15 to 20 knots becoming northwest. lake
effect snow in the morning, then a chance of snow showers in the
afternoon. waves 3 to 6 feet. 
.sunday night...northwest winds 15 to 20 knots diminishing to
10 to 15 knots. a chance of snow showers. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.monday...west winds 15 to 25 knots increasing to 30 knots. snow
during the day, then a chance of snow showers monday night. waves
3 to 5 feet building to 6 to 10 feet. waves occasionally around
13 feet. 
.tuesday...west winds 15 to 20 knots becoming southwest and
increasing to 30 knots. waves 3 to 6 feet building to 6 to
9 feet. waves occasionally around 11 feet. 
.wednesday...southwest winds to 30 knots becoming south and
diminishing to 15 to 20 knots. waves 6 to 9 feet subsiding to
2 to 3 feet. waves occasionally around 11 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 am est sat dec 13 2025

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 29.6 inch low over western quebec this late morning 
will advance towards southern quebec tonight while weakening to 29.9 
inches, all while dragging an attendant cold front across the lake 
through the early afternoon. a strong 30.8 inch high over the mid 
mississippi valley sunday will then settle across the southeast 
states monday and tuesday while weakening to 30.3 inches. meanwhile, 
a strong 29.1 inch low over the southern canadian prairies tuesday 
will strengthen to 28.7 inches while quickly shifting east across 
northwestern ontario and into central quebec by wednesday...while 
pushing an attendant warm front across the lake tuesday, followed by 
a cold front on wednesday.


loz063-132200-
lake ontario open waters from hamlin beach to sodus bay-
1002 am est sat dec 13 2025

.rest of today...southwest winds to 30 knots becoming west. snow
showers likely late this morning, then a chance of snow showers
this afternoon. waves 5 to 8 feet building to 9 to 13 feet. waves
occasionally around 16 feet. 
.tonight...west winds to 30 knots diminishing to 15 to 20 knots.
lake effect snow showers. waves 9 to 12 feet subsiding to 4 to
7 feet. waves occasionally around 15 feet. 
.sunday...west winds 15 to 20 knots becoming northwest. lake
effect snow in the morning, then lake effect snow showers likely
in the afternoon. waves 4 to 7 feet. waves occasionally around
9 feet. 
.sunday night...northwest winds 15 to 20 knots. a chance of snow
showers. waves 3 to 6 feet. 
.monday...west winds 15 to 20 knots increasing to 30 knots. lake
effect snow. waves 2 to 4 feet building to 6 to 10 feet. waves
occasionally around 13 feet. 
.tuesday...west winds 15 to 25 knots becoming southwest. waves
4 to 7 feet. waves occasionally around 9 feet. 
.wednesday...southwest winds to 30 knots becoming south and
diminishing to 15 to 20 knots. waves 6 to 10 feet subsiding to
2 to 4 feet. waves occasionally around 13 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 am est sat dec 13 2025

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 29.6 inch low over western quebec this late morning 
will advance towards southern quebec tonight while weakening to 29.9 
inches, all while dragging an attendant cold front across the lake 
through the early afternoon. a strong 30.8 inch high over the mid 
mississippi valley sunday will then settle across the southeast 
states monday and tuesday while weakening to 30.3 inches. meanwhile, 
a strong 29.1 inch low over the southern canadian prairies tuesday 
will strengthen to 28.7 inches while quickly shifting east across 
northwestern ontario and into central quebec by wednesday...while 
pushing an attendant warm front across the lake tuesday, followed by 
a cold front on wednesday.


loz064-065-132200-
lake ontario open waters from sodus bay to the saint lawrence
river-
1002 am est sat dec 13 2025

.rest of today...southwest winds to 30 knots becoming west. lake
effect snow showers, then a chance of snow showers late. waves
5 to 8 feet building to 9 to 13 feet. waves occasionally around
16 feet. 
.tonight...west winds to 30 knots diminishing to 15 to 20 knots.
lake effect snow showers. waves 9 to 12 feet subsiding to 5 to
8 feet. waves occasionally around 15 feet. 
.sunday...northwest winds 15 to 20 knots. lake effect snow in the
morning, then a chance of snow showers in the afternoon. waves
4 to 7 feet subsiding to 3 to 6 feet. waves occasionally around
9 feet. 
.sunday night...northwest winds 15 to 20 knots. a chance of snow
showers. waves 3 to 6 feet. 
.monday...southwest winds to 30 knots becoming west 15 to
25 knots. lake effect snow. waves 2 to 4 feet building to 6 to
10 feet. waves occasionally around 13 feet. 
.tuesday...west winds 15 to 25 knots becoming south to 30 knots.
a chance of snow showers during the day. waves 4 to 7 feet. waves
occasionally around 9 feet. 
.wednesday...southwest winds to 30 knots becoming south and
diminishing to 15 to 20 knots. a chance of rain showers during
the day. waves 6 to 10 feet subsiding to 3 to 5 feet. waves
occasionally around 13 feet. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1002 am est sat dec 13 2025


slz022-132200-
saint lawrence river from cape vincent to ogdensburg-
1002 am est sat dec 13 2025

.this afternoon...south winds 15 to 20 knots becoming southwest.
lake effect snow showers, then a chance of snow showers late. 
.tonight...southwest winds 15 to 20 knots becoming west 5 to
15 knots. mostly cloudy. 
.sunday...northwest winds 10 knots or less. partly to mostly
sunny. 
.sunday night...northwest winds 10 knots or less becoming west.
partly to mostly cloudy. 
.monday...west winds 10 knots or less becoming southwest. lake
effect snow. 
.tuesday...southwest winds 10 knots or less becoming south and
increasing to 15 to 20 knots. mostly cloudy. 
.wednesday...southwest winds 15 to 20 knots becoming south 5 to
15 knots. a chance of rain showers during the day. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
929 am est sat dec 13 2025

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...
a cold front will move east across lake erie today followed by a 
trough averaging 30.20 inches lingering over the lake into sunday.
high pressure 30.70 inches will gradually build into the ohio 
valley and southern great lakes regions sunday and monday. this 
high will weaken to 30.40 inches as it moves towards the carolinas
on tuesday and wednesday.


lez061-168-169-132115-
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-
929 am est sat dec 13 2025

.rest of today...west winds to 30 knots. snow late this morning,
then a chance of snow early this afternoon. snow late. waves 6 to
10 feet. waves occasionally around 13 feet. 
.tonight...west winds 15 to 25 knots. snow likely in the evening,
then a chance of snow after midnight. snow late. waves 4 to
7 feet. waves occasionally around 9 feet. 
.sunday...west winds 20 to 25 knots becoming northwest. snow.
waves 5 to 8 feet. waves occasionally around 10 feet. 
.sunday night...northwest winds 15 to 25 knots. a chance of snow.
waves 5 to 8 feet subsiding to 3 to 6 feet. waves occasionally
around 10 feet. 
.monday...southwest winds to 30 knots becoming west 15 to
25 knots. snow. waves 5 to 8 feet building to 8 to 12 feet, then
subsiding to 6 to 9 feet. waves occasionally around 15 feet. 
.tuesday...southwest winds 15 to 20 knots increasing to 30 knots.
waves 3 to 5 feet building to 6 to 9 feet. waves occasionally
around 11 feet. 
.wednesday...southwest winds to 30 knots becoming south 15 to
25 knots. a chance of rain wednesday night. waves 6 to 9 feet
subsiding to 3 to 6 feet. waves occasionally around 11 feet. 

$$