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open lake forecast for lake ontario
national weather service buffalo ny
402 pm est wed nov 26 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 29.3 inch low over the upper peninsula of michigan 
this evening will track northeast into lower quebec by thursday 
morning. meanwhile, a cold front over the center of the lake will 
continue to exit east across the lake and into new england. the 29.3 
inch surface low will track well north of the lake thursday and 
friday, as a 30.4 inch surface high builds into the mid-mississippi 
valley friday and to the ohio valley saturday. another surface low 
will cut northeastward through the central great lakes sunday, 
deepening from 29.6 inches sunday morning to 29.4 inches sunday 
night over western quebec. a 30.5 inch surface high centered over 
the central plains will then build east across the great lakes 
monday.


loz062-270400-
lake ontario open waters from the niagara river to hamlin beach-
402 pm est wed nov 26 2025

...gale warning in effect through friday evening...

.tonight...southwest gales to 35 knots increasing to 40 knots.
lake effect rain showers likely early, then lake effect rain with
lake effect snow showers likely late this evening. a chance of
rain and snow showers after midnight. waves 10 to 14 feet
building to 11 to 16 feet. waves occasionally around 20 feet. 
.thursday...west gales to 35 knots. rain showers likely with a
chance of snow showers in the morning, then lake effect rain and
snow in the afternoon. waves 11 to 16 feet. waves occasionally
around 20 feet. 
.thursday night...west gales to 35 knots diminishing to 30 knots
overnight. lake effect snow. waves 9 to 13 feet subsiding to 8 to
11 feet. waves occasionally around 16 feet. 
.friday...west winds to 30 knots. lake effect snow showers
likely. waves 8 to 11 feet. waves occasionally around 14 feet. 
.friday night...west winds to 30 knots becoming northwest and
diminishing to 15 to 20 knots. a chance of snow showers. waves
6 to 10 feet subsiding to 5 to 8 feet. waves occasionally around
13 feet. 
.saturday...west winds 15 to 20 knots becoming southeast. lake
effect snow showers saturday night. waves 3 to 5 feet subsiding
to 2 to 4 feet. 
.sunday...south winds to 30 knots becoming west and diminishing
to 15 to 20 knots. lake effect rain and snow showers during the
day, then lake effect rain showers sunday night. waves 3 to
6 feet building to 5 to 8 feet. waves occasionally around
10 feet. 
.monday...west winds 15 to 20 knots becoming south 10 to
15 knots. a chance of lake effect snow showers monday night.
waves 3 to 6 feet subsiding to 1 to 2 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 pm est wed nov 26 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 29.3 inch low over the upper peninsula of michigan 
this evening will track northeast into lower quebec by thursday 
morning. meanwhile, a cold front over the center of the lake will 
continue to exit east across the lake and into new england. the 29.3 
inch surface low will track well north of the lake thursday and 
friday, as a 30.4 inch surface high builds into the mid-mississippi 
valley friday and to the ohio valley saturday. another surface low 
will cut northeastward through the central great lakes sunday, 
deepening from 29.6 inches sunday morning to 29.4 inches sunday 
night over western quebec. a 30.5 inch surface high centered over 
the central plains will then build east across the great lakes 
monday.


loz063-270400-
lake ontario open waters from hamlin beach to sodus bay-
402 pm est wed nov 26 2025

...gale warning in effect through friday evening...

.tonight...southwest winds to 30 knots increasing to 35 knot
gales. lake effect rain and snow showers likely. waves 9 to
13 feet building to 11 to 15 feet. waves occasionally around
19 feet. 
.thursday...west gales to 40 knots diminishing to 35 knots. lake
effect rain and snow showers likely in the morning, then lake
effect rain with lake effect snow showers likely in the
afternoon. waves 12 to 17 feet. waves occasionally around
22 feet. 
.thursday night...west gales to 35 knots diminishing to 30 knots
overnight. lake effect snow and lake effect rain in the evening,
then lake effect snow overnight. waves 11 to 16 feet subsiding to
10 to 14 feet. waves occasionally around 20 feet. 
.friday...west winds to 30 knots increasing to 35 knot gales.
lake effect snow in the morning, then lake effect snow showers
likely in the afternoon. waves 10 to 14 feet. waves occasionally
around 18 feet. 
.friday night...west winds to 30 knots becoming northwest. lake
effect snow showers likely. waves 9 to 13 feet subsiding to 5 to
8 feet. waves occasionally around 16 feet. 
.saturday...northwest winds 15 to 25 knots becoming southeast.
lake effect snow showers likely saturday night. waves 4 to 7 feet
subsiding to 3 to 6 feet. waves occasionally around 9 feet. 
.sunday...south winds to 30 knots becoming west. lake effect rain
and snow showers during the day, then lake effect rain showers
with a chance of lake effect snow showers sunday night. waves
5 to 8 feet. waves occasionally around 10 feet. 
.monday...west winds 15 to 20 knots becoming south 10 to
15 knots. a chance of lake effect snow showers. waves 4 to 7 feet
subsiding to 1 to 3 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 nov 26 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 29.3 inch low over the upper peninsula of michigan 
this evening will track northeast into lower quebec by thursday 
morning. meanwhile, a cold front over the center of the lake will 
continue to exit east across the lake and into new england. the 29.3 
inch surface low will track well north of the lake thursday and 
friday, as a 30.4 inch surface high builds into the mid-mississippi 
valley friday and to the ohio valley saturday. another surface low 
will cut northeastward through the central great lakes sunday, 
deepening from 29.6 inches sunday morning to 29.4 inches sunday 
night over western quebec. a 30.5 inch surface high centered over 
the central plains will then build east across the great lakes 
monday.


loz064-065-270400-
lake ontario open waters from sodus bay to the saint lawrence
river-
402 pm est wed nov 26 2025

...gale warning in effect through friday evening...

.tonight...west gales to 35 knots becoming southwest. a chance of
rain showers this evening, then lake effect rain showers likely
with a chance of lake effect snow showers after midnight. waves
10 to 14 feet. waves occasionally around 18 feet. 
.thursday...southwest gales to 35 knots becoming west to
40 knots. lake effect rain with lake effect snow showers likely
in the morning, then lake effect rain early in the afternoon.
lake effect rain and snow late. waves 12 to 17 feet. waves
occasionally around 22 feet. 
.thursday night...west gales to 35 knots in the evening. lake
effect snow and lake effect rain with a few rumbles of thunder
possible in the evening, then lake effect snow overnight. waves
12 to 17 feet subsiding to 10 to 15 feet. waves occasionally
around 22 feet. 
.friday...west winds to 30 knots increasing to 35 knot gales.
lake effect snow showers likely. waves 10 to 15 feet. waves
occasionally around 19 feet. 
.friday night...northwest winds to 30 knots. a chance of snow
showers. waves 10 to 14 feet subsiding to 6 to 9 feet. waves
occasionally around 18 feet. 
.saturday...northwest winds 15 to 20 knots becoming southeast and
increasing to 30 knots. lake effect snow showers likely saturday
night. waves 4 to 7 feet subsiding to 3 to 6 feet. waves
occasionally around 9 feet. 
.sunday...south gales to 35 knots becoming west and diminishing
to 30 knots. lake effect rain and snow showers during the day,
then lake effect rain showers with a chance of lake effect snow
showers sunday night. waves 6 to 10 feet. waves occasionally
around 13 feet. 
.monday...west winds 15 to 20 knots becoming southeast 10 to
15 knots. a chance of lake effect snow showers. waves 4 to 7 feet
subsiding to 1 to 3 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 nov 26 2025


slz022-270400-
saint lawrence river from cape vincent to ogdensburg-
402 pm est wed nov 26 2025

...small craft advisory in effect through thursday evening...

.tonight...southwest winds 15 to 25 knots. rain this evening,
then lake effect rain and snow after midnight. 
.thursday...southwest winds 15 to 25 knots. lake effect rain and
snow in the morning, then lake effect rain and snow showers
likely early in the afternoon. lake effect snow late. 
.thursday night...southwest winds 15 to 25 knots becoming west.
lake effect snow showers likely. 
.friday...west winds 15 to 20 knots. a chance of snow showers. 
.friday night...west winds 15 to 20 knots diminishing to 5 to
15 knots. a chance of snow showers in the evening. 
.saturday...west winds 10 knots or less becoming southeast 10 to
15 knots. lake effect snow showers likely saturday night. 
.sunday...south winds 10 to 15 knots becoming west. lake effect
snow and rain showers. 
.monday...west winds 10 knots or less becoming east. a chance of
lake effect snow showers. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
315 pm est wed nov 26 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...
low pressure 29.30 inches will move east across southern ontario
tonight, pushing a trough averaging 29.70 inches across the lake.
the trough will settle over the region thursday and weaken to an 
average of 30.00 inches friday. high pressure 30.40 inches will 
briefly move east across the lake friday night into saturday 
before low pressure 29.80 inches moves east across the great lakes
late saturday into sunday. high pressure 30.50 inches will begin 
to build east into the region on monday.


lez061-168-169-270315-
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-
315 pm est wed nov 26 2025

...gale warning in effect through friday morning...

.tonight...southwest gales to 40 knots becoming west. rain
showers with a slight chance of thunderstorms early, then rain
showers, snow showers with a slight chance of thunderstorms. rain
and snow showers late. waves 12 to 16 feet building to 14 to
19 feet. waves occasionally around 24 feet. 
.thursday...west gales to 40 knots. a chance of snow and rain
showers in the morning, then snow showers likely with a slight
chance of rain showers in the afternoon. waves 13 to 17 feet
subsiding to 11 to 15 feet. waves occasionally around 22 feet. 
.thursday night...west gales to 40 knots diminishing to 35 knots.
snow showers likely. waves 11 to 16 feet. waves occasionally
around 20 feet. 
.friday...west gales to 35 knots diminishing to 30 knots. snow
showers. waves 9 to 13 feet subsiding to 8 to 11 feet. waves
occasionally around 16 feet. 
.friday night...west winds to 30 knots diminishing to 15 to
25 knots. a chance of snow showers in the evening. waves 6 to
10 feet subsiding to 3 to 6 feet. waves occasionally around
13 feet. 
.saturday...west winds 5 to 15 knots becoming south and
increasing to 15 to 25 knots. a chance of snow during the day,
then snow and rain saturday night. waves 2 to 4 feet building to
3 to 6 feet. 
.sunday...south winds to 30 knots becoming west and diminishing
to 15 to 20 knots. rain during the day, then a chance of snow and
rain sunday night. waves 5 to 8 feet building to 7 to 10 feet,
then subsiding to 4 to 7 feet. waves occasionally around 13 feet.
.monday...west winds 15 to 20 knots becoming south 5 to 15 knots.
a chance of snow. waves 3 to 5 feet subsiding to 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$