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open lake forecast for lake ontario
national weather service buffalo ny
1002 am est thu dec 4 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... behind a strong early morning cold front passing over 
the lake, a 30.4 inch high will build into the region its wake 
through tonight. the high will then quickly move east of the lake 
friday. another cold front will cross the lake late saturday and 
saturday night, this from a 29.3 inch low near northern james bay. 
then, another area of surface high pressure averaging 30.3 inches 
will build eastward across the great lakes through sunday, moving 
overhead monday.


loz062-042200-
lake ontario open waters from the niagara river to hamlin beach-
1002 am est thu dec 4 2025

.this afternoon...northwest winds to 30 knots diminishing to 15 to
25 knots. a chance of lake effect snow showers. waves 5 to
9 feet. waves occasionally around 11 feet. 
.tonight...northwest winds 15 to 20 knots becoming south 10 to
15 knots. waves 3 to 5 feet subsiding to 1 to 2 feet. 
.friday...south winds 10 to 15 knots becoming southwest 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.friday night...southwest winds 10 to 15 knots increasing to
15 to 20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.saturday...southwest winds 15 to 25 knots becoming northwest and
diminishing to 10 to 15 knots. snow showers likely with a chance
of rain showers during the day, then a chance of snow and rain
showers saturday night. waves 3 to 6 feet subsiding to 2 to
4 feet. 
.sunday...north winds 10 to 15 knots. a chance of snow showers.
waves 1 to 3 feet. 
.monday...north winds 10 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 am est thu dec 4 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... behind a strong early morning cold front passing over 
the lake, a 30.4 inch high will build into the region its wake 
through tonight. the high will then quickly move east of the lake 
friday. another cold front will cross the lake late saturday and 
saturday night, this from a 29.3 inch low near northern james bay. 
then, another area of surface high pressure averaging 30.3 inches 
will build eastward across the great lakes through sunday, moving 
overhead monday.


loz063-042200-
lake ontario open waters from hamlin beach to sodus bay-
1002 am est thu dec 4 2025

.this afternoon...northwest winds to 30 knots. lake effect snow
showers likely, then a chance of snow showers late. waves 8 to
12 feet subsiding to 7 to 10 feet. waves occasionally around
15 feet. 
.tonight...northwest winds 15 to 25 knots becoming south and
diminishing to 5 to 15 knots. waves 5 to 8 feet subsiding to 1 to
3 feet. waves occasionally around 10 feet. 
.friday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.friday night...southwest winds 10 to 15 knots becoming south
15 to 20 knots. waves 1 to 3 feet. 
.saturday...southwest winds 15 to 20 knots becoming northwest.
snow showers likely with a chance of rain showers during the day,
then a chance of snow and rain showers saturday night. waves 3 to
6 feet building to 4 to 7 feet, then subsiding to 3 to 5 feet.
waves occasionally around 9 feet. 
.sunday...north winds 10 to 15 knots. a chance of snow showers.
waves 2 to 4 feet subsiding to 1 to 3 feet. 
.monday...north winds 10 to 15 knots becoming south 15 to
20 knots. waves 1 to 3 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 am est thu dec 4 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... behind a strong early morning cold front passing over 
the lake, a 30.4 inch high will build into the region its wake 
through tonight. the high will then quickly move east of the lake 
friday. another cold front will cross the lake late saturday and 
saturday night, this from a 29.3 inch low near northern james bay. 
then, another area of surface high pressure averaging 30.3 inches 
will build eastward across the great lakes through sunday, moving 
overhead monday.


loz064-065-042200-
lake ontario open waters from sodus bay to the saint lawrence
river-
1002 am est thu dec 4 2025

.this afternoon...northwest winds to 30 knots. a chance of snow
showers. waves 7 to 11 feet. waves occasionally around 14 feet. 
.tonight...northwest winds to 30 knots becoming southeast and
diminishing to 5 to 15 knots after midnight. a chance of snow
showers late. waves 6 to 9 feet subsiding to 2 feet or less.
waves occasionally around 11 feet. 
.friday...south winds 15 to 25 knots. waves 2 to 4 feet building
to 3 to 6 feet. 
.friday night...south winds 15 to 20 knots. waves 3 to 5 feet. 
.saturday...south winds 15 to 25 knots becoming northwest. snow
and rain showers likely. waves 3 to 6 feet building to 4 to
7 feet, then subsiding to 3 to 6 feet. waves occasionally around
9 feet. 
.sunday...north winds 10 to 15 knots. snow showers likely. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.monday...north winds 5 to 15 knots becoming south 15 to
20 knots. a chance of snow showers monday night. waves 1 to
3 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
258 pm est thu dec 4 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 ridge averaging 30.40 inches affects lake erie through friday
night as the embedded high pressure center moves from near the
upper mississippi valley to atlantic waters near nova scotia. on 
saturday, a cold front should sweep generally southeastward 
across lake erie. the front should waver in a north-south manner 
in vicinity of lake erie on sunday as a low wobbles east-northeastward
from near the east-central great plains to the northeast united 
states and deepens slightly to 29.90 inches. on monday, a ridge
averaging 30.50 inches should build from the upper mississippi
valley through about midday and then begin to exit eastward during
the rest of monday through tuesday. this should allow a warm 
front to sweep northeastward across lake erie later on monday.


lez061-167>169-050315-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 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-
258 pm est thu dec 4 2025

.tonight...northwest winds 5 to 15 knots becoming south. waves
2 to 4 feet subsiding to 2 feet or less. 
.friday...south winds 10 to 15 knots becoming southwest 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.friday night...southwest winds 15 to 25 knots. waves 3 to 6 feet
building to 4 to 7 feet. waves occasionally around 9 feet. 
.saturday...southwest winds 15 to 25 knots becoming west. a
chance of rain and snow in the morning, then rain and snow likely
in the afternoon. waves 4 to 7 feet. waves occasionally around
9 feet. 
.saturday night...west winds 15 to 20 knots becoming northwest
5 to 15 knots. a chance of rain and snow in the evening, then a
chance of snow overnight. waves 3 to 6 feet subsiding to 1 to
3 feet. 
.sunday...west winds 5 to 15 knots becoming north 15 to 20 knots.
a chance of snow. waves 1 to 3 feet building to 3 to 5 feet. 
.monday...north winds 15 to 25 knots becoming south. waves 2 to
4 feet building to 3 to 6 feet. 
.tuesday...southwest winds to 30 knots diminishing to 15 to
25 knots. snow. waves 6 to 9 feet building to 7 to 11 feet, then
subsiding to 5 to 8 feet. waves occasionally around 14 feet. 

$$