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open lake forecast for lake ontario
national weather service buffalo ny
402 pm est wed dec 10 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 29.2 inch low will cross along the northern shoreline 
of the lake this afternoon before moving northeast of the lake this 
evening, while dragging a cold front across the lake waters. the 
region will then be situated between a 29.1 inch low over the 
canadian maritimes and a 30.1 inch high over the southern plains 
thursday. a 29.9 inch ridge of high pressure is expected to move 
into the great lakes region friday. a 29.8 inch low may move north 
of the lake on saturday, then 30.2 inches will average across the 
lower great lakes region between the departing low to the east and a 
30.7 inch high over the plains sunday.


loz062-110400-
lake ontario open waters from the niagara river to hamlin beach-
402 pm est wed dec 10 2025

.tonight...northwest winds to 30 knots. rain likely with a chance
of snow this evening, then snow showers likely after midnight.
waves 5 to 8 feet building to 7 to 11 feet. waves occasionally
around 14 feet. 
.thursday...northwest winds to 30 knots becoming west. a chance
of snow showers. waves 8 to 12 feet. waves occasionally around
15 feet. 
.thursday night...northwest winds to 30 knots becoming west and
diminishing to 15 to 20 knots. waves 7 to 11 feet subsiding to
5 to 8 feet. waves occasionally around 14 feet. 
.friday...west winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of snow showers in the afternoon. waves 3 to
6 feet subsiding to 2 to 4 feet. 
.friday night...west winds 10 to 15 knots becoming southwest. a
chance of snow showers overnight. waves 1 to 3 feet. 
.saturday...southwest winds 15 to 25 knots becoming west to
30 knots. snow showers likely. waves 3 to 6 feet building to 5 to
9 feet. waves occasionally around 11 feet. 
.sunday...west winds 15 to 20 knots becoming northwest 10 to
15 knots. snow showers likely during the day, then a chance of
snow showers sunday night. waves 4 to 7 feet subsiding to 2 to
4 feet. waves occasionally around 9 feet. 
.monday...west winds 10 to 15 knots increasing to 15 to 25 knots.
a chance of snow showers. waves 1 to 3 feet building to 3 to
6 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 pm est wed dec 10 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 29.2 inch low will cross along the northern shoreline 
of the lake this afternoon before moving northeast of the lake this 
evening, while dragging a cold front across the lake waters. the 
region will then be situated between a 29.1 inch low over the 
canadian maritimes and a 30.1 inch high over the southern plains 
thursday. a 29.9 inch ridge of high pressure is expected to move 
into the great lakes region friday. a 29.8 inch low may move north 
of the lake on saturday, then 30.2 inches will average across the 
lower great lakes region between the departing low to the east and a 
30.7 inch high over the plains sunday.


loz063-110400-
lake ontario open waters from hamlin beach to sodus bay-
402 pm est wed dec 10 2025

...gale warning in effect from 1 am est thursday through thursday
evening...

.tonight...west winds to 30 knots becoming northwest and
increasing to 35 knot gales. rain early, then snow and rain
likely late this evening. lake effect snow showers likely after
midnight. waves 4 to 7 feet building to 10 to 14 feet. waves
occasionally around 18 feet. 
.thursday...northwest gales to 35 knots becoming west. lake
effect snow showers likely through early afternoon, then a chance
of snow showers late. waves 11 to 15 feet. waves occasionally
around 19 feet. 
.thursday night...northwest gales to 35 knots diminishing to
30 knots. a chance of snow showers. waves 10 to 15 feet subsiding
to 6 to 9 feet. waves occasionally around 19 feet. 
.friday...west winds 15 to 25 knots. a chance of snow showers.
waves 5 to 8 feet subsiding to 3 to 5 feet. waves occasionally
around 10 feet. 
.friday night...west winds 15 to 20 knots becoming southwest
10 to 15 knots. a chance of snow showers. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.saturday...southwest winds 15 to 25 knots becoming west to
30 knots. snow showers likely. waves 3 to 5 feet building to 6 to
10 feet. waves occasionally around 13 feet. 
.sunday...west winds 15 to 25 knots becoming northwest. snow
showers likely during the day, then a chance of snow showers
sunday night. waves 5 to 8 feet subsiding to 3 to 5 feet. waves
occasionally around 10 feet. 
.monday...northwest winds 10 to 15 knots becoming west 15 to
20 knots. a chance of snow showers. waves 2 to 4 feet building to
4 to 7 feet. waves occasionally around 9 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 pm est wed dec 10 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 29.2 inch low will cross along the northern shoreline 
of the lake this afternoon before moving northeast of the lake this 
evening, while dragging a cold front across the lake waters. the 
region will then be situated between a 29.1 inch low over the 
canadian maritimes and a 30.1 inch high over the southern plains 
thursday. a 29.9 inch ridge of high pressure is expected to move 
into the great lakes region friday. a 29.8 inch low may move north 
of the lake on saturday, then 30.2 inches will average across the 
lower great lakes region between the departing low to the east and a 
30.7 inch high over the plains sunday.


loz064-065-110400-
lake ontario open waters from sodus bay to the saint lawrence
river-
402 pm est wed dec 10 2025

...gale warning in effect from 1 am est thursday through thursday
evening...

.tonight...west winds to 30 knots becoming northwest and
increasing to 35 knot gales after midnight. rain early, then snow
and rain likely late this evening. snow showers likely after
midnight. waves 5 to 9 feet building to 10 to 14 feet. waves
occasionally around 18 feet. 
.thursday...northwest gales to 35 knots becoming west. snow
showers likely in the morning, then a chance of snow showers in
the afternoon. waves 11 to 16 feet. waves occasionally around
20 feet. 
.thursday night...northwest gales to 35 knots diminishing to
30 knots. a chance of snow showers. waves 12 to 16 feet subsiding
to 7 to 11 feet. waves occasionally around 20 feet. 
.friday...northwest winds 15 to 25 knots becoming west. a chance
of snow showers. waves 5 to 8 feet subsiding to 3 to 6 feet.
waves occasionally around 10 feet. 
.friday night...west winds 15 to 20 knots becoming southwest
10 to 15 knots. lake effect snow showers likely. waves 3 to
5 feet subsiding to 1 to 3 feet. 
.saturday...south winds 15 to 25 knots becoming west. snow
showers. waves 3 to 5 feet building to 6 to 10 feet. waves
occasionally around 13 feet. 
.sunday...west winds 15 to 25 knots becoming northwest. snow
showers. waves 5 to 8 feet subsiding to 3 to 6 feet. waves
occasionally around 10 feet. 
.monday...northwest winds 10 to 15 knots becoming west 15 to
20 knots. a chance of snow showers during the day, then snow
showers likely monday night. waves 2 to 4 feet building to 4 to
7 feet. waves occasionally around 9 feet. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 pm est wed dec 10 2025


slz022-110400-
saint lawrence river from cape vincent to ogdensburg-
402 pm est wed dec 10 2025

.tonight...southwest winds 5 to 15 knots becoming west. snow and
rain early, then snow likely late this evening. snow showers
likely after midnight. 
.thursday...west winds 15 to 20 knots. a chance of snow showers
in the morning. 
.thursday night...west winds 15 to 20 knots diminishing to 5 to
15 knots. mostly cloudy in the evening, then becoming partly
cloudy. 
.friday...west winds 5 to 10 knots becoming southwest. mostly
sunny. 
.friday night...southwest winds less than 10 knots becoming
south. a chance of snow showers overnight. 
.saturday...south winds 5 to 15 knots becoming southwest. snow
showers. 
.sunday...west winds 5 to 10 knots becoming northwest. snow
showers likely during the day. 
.monday...west winds 10 knots or less becoming southwest. a
chance of snow showers during the day, then snow showers likely
monday night. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
659 pm est wed dec 10 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 away from lake erie this evening with
a trough averaging 29.80 inches lingering over the lake thursday.
a ridge averaging 30.00 inches will briefly build east over the
great lakes late thursday into early friday before low pressure 
29.80 inches moves east across the ohio valley during the day
friday. a cold front will move east across lake erie late friday
and early saturday with high pressure 30.60 inches building
southeast over the midwest sunday and monday.


lez061-168-169-110315-
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-
659 pm est wed dec 10 2025

.tonight...northwest winds to 30 knots. snow and rain early, then
snow likely late this evening. a chance of snow after midnight.
waves 8 to 11 feet subsiding to 6 to 9 feet. waves occasionally
around 14 feet. 
.thursday...west winds to 30 knots. a chance of snow. waves 6 to
10 feet. waves occasionally around 13 feet. 
.thursday night...west winds to 30 knots diminishing to 10 to
15 knots. a chance of snow in the evening. waves 6 to 10 feet
subsiding to 3 to 5 feet. waves occasionally around 13 feet. 
.friday...west winds 10 to 15 knots. waves 2 to 4 feet subsiding
to 1 to 2 feet. 
.friday night...southwest winds 10 to 15 knots increasing to
15 to 25 knots. snow likely overnight. waves 1 to 2 feet building
to 3 to 6 feet. 
.saturday...west winds to 30 knots. snow likely. waves 6 to
10 feet. waves occasionally around 13 feet. 
.sunday...west winds to 30 knots becoming northwest and
diminishing to 15 to 20 knots. snow likely during the day, then a
chance of snow sunday night. waves 5 to 8 feet subsiding to 3 to
6 feet. waves occasionally around 10 feet. 
.monday...west winds 15 to 20 knots becoming southwest. a chance
of snow monday night. waves 2 to 4 feet building to 4 to 7 feet.
waves occasionally around 9 feet. 

$$