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open lake forecast for lake ontario
national weather service buffalo ny
402 pm est mon nov 17 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 28.8 low over the canadian maritimes will withdraw 
northward across labrador tonight and tuesday. a 30.3 inch high will 
build from the upper great lakes tuesday to the lower great lakes 
wednesday, then to new england thursday. a 29.6 inch low over 
northern ontario will then make its way to quebec friday, while 
pushing its trailing cold front across the lake. a 30.1 inch high 
is then forecast to build across the lower great lakes saturday.


loz062-180400-
lake ontario open waters from the niagara river to hamlin beach-
402 pm est mon nov 17 2025

.tonight...northwest winds 15 to 25 knots. waves 4 to 7 feet
subsiding to 3 to 6 feet. waves occasionally around 9 feet. 
.tuesday...west winds 15 to 20 knots diminishing to 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tuesday night...northwest winds 5 to 10 knots becoming north.
waves 2 feet or less. 
.wednesday...northeast winds 5 to 10 knots becoming light and
variable. waves 1 foot or less. 
.wednesday night...light and variable winds. waves 1 foot or
less. 
.thursday...southeast winds 10 knots or less becoming southwest
10 to 15 knots. rain showers likely thursday night. waves 2 feet
or less. 
.friday...west winds 15 to 20 knots becoming northwest 10 to
15 knots. rain showers likely during the day, then a chance of
rain showers friday night. waves 1 to 3 feet building to 2 to
4 feet. 
.saturday...northwest winds 10 to 15 knots becoming west. waves
1 to 3 feet. 

$$

fzus61 kbuf 172102
glflo 
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open lake forecast for lake ontario
national weather service buffalo ny
402 pm est mon nov 17 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 28.8 low over the canadian maritimes will withdraw 
northward across labrador tonight and tuesday. a 30.3 inch high will 
build from the upper great lakes tuesday to the lower great lakes 
wednesday, then to new england thursday. a 29.6 inch low over 
northern ontario will then make its way to quebec friday, while 
pushing its trailing cold front across the lake. a 30.1 inch high 
is then forecast to build across the lower great lakes saturday.


loz063-180400-
lake ontario open waters from hamlin beach to sodus bay-
402 pm est mon nov 17 2025

.tonight...northwest winds 15 to 25 knots. a chance of snow
showers through the early overnight. waves 5 to 9 feet subsiding
to 4 to 7 feet. waves occasionally around 11 feet. 
.tuesday...northwest winds 15 to 20 knots becoming west 10 to
15 knots. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.tuesday night...west winds 5 to 10 knots becoming north. waves
1 to 2 feet. 
.wednesday...north winds 10 knots or less becoming northwest.
waves 1 foot or less. 
.wednesday night...light and variable winds becoming southeast
5 to 10 knots. waves 1 foot or less. 
.thursday...southeast winds 5 to 10 knots becoming south and
increasing to 15 to 20 knots. rain showers likely thursday night.
waves 1 foot or less building to 1 to 3 feet. 
.friday...southwest winds 15 to 20 knots becoming northwest. rain
showers likely during the day, then a chance of rain showers
friday night. waves 2 to 4 feet building to 3 to 6 feet. 
.saturday...northwest winds 10 to 15 knots becoming west. a
chance of rain showers during the day. waves 2 to 4 feet
subsiding to 1 to 2 feet. 

$$

fzus61 kbuf 172102
glflo 
expires:202511180400;;582452

open lake forecast for lake ontario
national weather service buffalo ny
402 pm est mon nov 17 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 28.8 low over the canadian maritimes will withdraw 
northward across labrador tonight and tuesday. a 30.3 inch high will 
build from the upper great lakes tuesday to the lower great lakes 
wednesday, then to new england thursday. a 29.6 inch low over 
northern ontario will then make its way to quebec friday, while 
pushing its trailing cold front across the lake. a 30.1 inch high 
is then forecast to build across the lower great lakes saturday.


loz064-065-180400-
lake ontario open waters from sodus bay to the saint lawrence
river-
402 pm est mon nov 17 2025

.tonight...northwest winds 15 to 25 knots. waves 6 to 10 feet
subsiding to 5 to 8 feet. waves occasionally around 13 feet. 
.tuesday...northwest winds 15 to 20 knots becoming west 10 to
15 knots. waves 4 to 7 feet subsiding to 1 to 3 feet. waves
occasionally around 9 feet. 
.tuesday night...west winds 5 to 10 knots becoming northwest.
waves 1 to 3 feet subsiding to 1 foot or less. 
.wednesday...northwest winds 10 knots or less. waves 1 foot or
less. 
.wednesday night...light and variable winds. waves 1 foot or
less. 
.thursday...southeast winds 5 to 15 knots becoming south 15 to
20 knots. rain showers likely thursday night. waves 2 feet or
less building to 2 to 4 feet. 
.friday...southwest winds 15 to 20 knots becoming northwest. rain
showers during the day, then a chance of rain showers friday
night. waves 3 to 6 feet. 
.saturday...northwest winds 10 to 15 knots becoming west. a
chance of rain showers during the day. waves 2 to 4 feet
subsiding to 1 to 3 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
331 pm est mon nov 17 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...
high pressure 30.20 inches builds over lake erie tonight, followed
by a trough averaging 30.00 inches tuesday. high pressure 30.10
inches builds back in for tuesday night through wednesday night. a
cold front tracks through the region late thursday night through
early friday.



lez061-166>169-180330-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm 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-
331 pm est mon nov 17 2025

.tonight...northwest winds 15 to 25 knots diminishing to 10 to
15 knots. a slight chance of rain early. waves 3 to 6 feet
subsiding to 1 to 3 feet. 
.tuesday...west winds 10 knots or less becoming south. a slight
chance of rain late in the morning. a chance of rain in the
afternoon. waves 1 to 3 feet subsiding to 1 foot or less. 
.tuesday night...southeast winds 5 to 10 knots becoming
northeast. a chance of rain in the evening. waves 1 foot or less.
.wednesday...northeast winds 5 to 10 knots. waves 1 foot or less.
.wednesday night...northeast winds 10 knots or less becoming
east. waves 1 foot or less. 
.thursday...southeast winds 10 knots or less becoming southwest
10 to 15 knots. rain likely thursday night. waves 1 to 3 feet. 
.friday...west winds 15 to 20 knots becoming north 10 to
15 knots. rain likely during the day, then a chance of rain
friday night. waves 2 to 4 feet. 
.saturday...north winds 5 to 15 knots becoming southwest. a
chance of rain during the day. waves 1 to 3 feet. 

$$