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(1/5)
Latest Great Lakes Marine Forecast by KBUF
Issued 11/20/2025 10:02 PM America/New_York.
Valid through 11/21/2025 5:00 AM America/New_York.
fzus61 kbuf 210302
glflo
expires:202511211000;;227571
open lake forecast for lake ontario
national weather service buffalo ny
1002 pm est thu nov 20 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 30.3 inch high over the lower great lakes will slide
out across new england through tonight. a 29.5 inch surface low near
james bay will swing a cold front east across tomorrow afternoon and
evening, with a 30.1 inch high building over the ohio valley and
lower great lakes saturday. a 29.5 inch low will then move from
northern ontario to james bay sunday, while pushing its cold front
across the lake through the afternoon hours. a 30.2 inch high is
then forecast to build across the ohio valley monday. on tuesday a
29.5 inch low to the north of lake superior will swing a cold front
across the lake by tuesday night.
loz062-211000-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm est thu nov 20 2025
.overnight...southwest winds 5 to 15 knots increasing to
15 to 20 knots. waves 1 to 3 feet.
.friday...southwest winds 15 to 20 knots becoming west. waves
3 to 6 feet.
.friday night...west winds 10 to 15 knots becoming northwest.
waves 2 to 4 feet.
.saturday...northwest winds 5 to 15 knots. waves 1 to 2 feet.
.saturday night...northwest winds 5 to 10 knots becoming
southwest. waves around 1 foot.
.sunday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet.
.monday...west winds 10 to 15 knots becoming southeast. a chance
of showers monday night. waves 1 to 3 feet.
.tuesday...southeast winds 10 to 15 knots becoming southwest
15 to 20 knots. rain during the day, then showers likely tuesday
night. waves 1 to 3 feet building to 2 to 4 feet.
$$
(2/5)
Latest Great Lakes Marine Forecast by KBUF
Issued 11/20/2025 10:02 PM America/New_York.
Valid through 11/21/2025 5:00 AM America/New_York.
fzus61 kbuf 210302
glflo
expires:202511211000;;227572
open lake forecast for lake ontario
national weather service buffalo ny
1002 pm est thu nov 20 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 30.3 inch high over the lower great lakes will slide
out across new england through tonight. a 29.5 inch surface low near
james bay will swing a cold front east across tomorrow afternoon and
evening, with a 30.1 inch high building over the ohio valley and
lower great lakes saturday. a 29.5 inch low will then move from
northern ontario to james bay sunday, while pushing its cold front
across the lake through the afternoon hours. a 30.2 inch high is
then forecast to build across the ohio valley monday. on tuesday a
29.5 inch low to the north of lake superior will swing a cold front
across the lake by tuesday night.
loz063-211000-
lake ontario open waters from hamlin beach to sodus bay-
1002 pm est thu nov 20 2025
.overnight...south winds 5 to 15 knots becoming southwest.
waves 1 to 3 feet.
.friday...southwest winds 15 to 20 knots becoming west. waves
2 to 4 feet building to 3 to 6 feet.
.friday night...west winds 15 to 20 knots becoming northwest
10 to 15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet.
.saturday...northwest winds 10 to 15 knots. waves 1 to 3 feet.
.saturday night...northwest winds 5 to 10 knots becoming west.
waves 1 to 2 feet.
.sunday...southwest winds 10 to 15 knots becoming west 15 to
20 knots. waves 1 to 3 feet building to 3 to 5 feet.
.monday...northwest winds 15 to 20 knots becoming southeast.
waves 3 to 5 feet subsiding to 1 to 3 feet.
.tuesday...southeast winds 15 to 20 knots becoming south. rain
likely during the day, then showers likely tuesday night. waves
2 to 4 feet building to 3 to 5 feet, then subsiding to 2 to
4 feet.
$$
(3/5)
Latest Great Lakes Marine Forecast by KBUF
Issued 11/20/2025 10:02 PM America/New_York.
Valid through 11/21/2025 5:00 AM America/New_York.
fzus61 kbuf 210302
glflo
expires:202511211000;;227573
open lake forecast for lake ontario
national weather service buffalo ny
1002 pm est thu nov 20 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 30.3 inch high over the lower great lakes will slide
out across new england through tonight. a 29.5 inch surface low near
james bay will swing a cold front east across tomorrow afternoon and
evening, with a 30.1 inch high building over the ohio valley and
lower great lakes saturday. a 29.5 inch low will then move from
northern ontario to james bay sunday, while pushing its cold front
across the lake through the afternoon hours. a 30.2 inch high is
then forecast to build across the ohio valley monday. on tuesday a
29.5 inch low to the north of lake superior will swing a cold front
across the lake by tuesday night.
loz064-065-211000-
lake ontario open waters from sodus bay to the saint lawrence
river-
1002 pm est thu nov 20 2025
.overnight...south winds 10 to 15 knots becoming southwest
15 to 20 knots. waves 2 feet or less building to 2 to 4 feet.
.friday...southwest winds 15 to 25 knots becoming west. a chance
of showers late in the morning. waves 3 to 6 feet building to
4 to 7 feet. waves occasionally around 9 feet.
.friday night...west winds 15 to 20 knots becoming northwest
10 to 15 knots. waves 3 to 6 feet subsiding to 2 to 4 feet.
.saturday...north winds 5 to 15 knots becoming northwest. waves
1 to 3 feet.
.saturday night...northwest winds 5 to 10 knots becoming west.
waves 2 feet or less.
.sunday...southwest winds 10 to 15 knots becoming northwest 15 to
20 knots. a chance of rain showers. waves 1 to 3 feet building to
3 to 5 feet.
.monday...northwest winds 15 to 20 knots becoming southeast.
waves 3 to 5 feet subsiding to 1 to 3 feet.
.tuesday...southeast winds 15 to 25 knots becoming south. rain
likely during the day, then showers tuesday night. waves 2 to
4 feet building to 3 to 6 feet.
$$
(4/5)
Latest Great Lakes Marine Forecast by KBUF
Issued 11/20/2025 10:02 PM America/New_York.
Valid through 11/21/2025 5:00 AM America/New_York.
fzus61 kbuf 210302
glfsl
expires:202511211000;;227568
forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1002 pm est thu nov 20 2025
slz022-211000-
saint lawrence river from cape vincent to ogdensburg-
1002 pm est thu nov 20 2025
.overnight...east winds 10 knots or less becoming south.
mostly cloudy.
.friday...south winds 5 to 15 knots becoming southwest. rain
showers likely late in the morning.
.friday night...west winds 10 knots or less becoming northwest.
mostly cloudy.
.saturday...northwest winds less than 10 knots. mostly sunny.
.saturday night...light and variable winds. partly cloudy in the
evening, then becoming mostly cloudy.
.sunday...southwest winds 5 to 10 knots becoming west. a chance
of rain and snow showers during the day, then a chance of rain
showers sunday night.
.monday...west winds 10 knots or less becoming south. mostly
cloudy.
.tuesday...southeast winds 5 to 15 knots becoming south. rain
likely during the day, then rain showers tuesday night.
$$
(5/5)
Latest Great Lakes Marine Forecast by KCLE
Issued 11/20/2025 9:39 PM America/New_York.
Valid through 11/21/2025 4:15 AM America/New_York.
fzus61 kcle 210239
glfle
expires:202511210915;;227143
open lake forecast for lake erie
national weather service cleveland oh
939 pm est thu nov 20 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 late friday and
friday evening with high pressure 30.20 inches building over the
great lakes in its wake on saturday. a warm front lift across the
lake late saturday into sunday, followed by another cold front on
late sunday into early monday.
lez061-168-169-210915-
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-
939 pm est thu nov 20 2025
.overnight...southwest winds 10 to 15 knots increasing to
15 to 20 knots. waves 2 feet or less building to 2 to 4 feet.
.friday...southwest winds 15 to 20 knots becoming west. waves
2 to 4 feet building to 3 to 5 feet.
.friday night...west winds 10 to 15 knots becoming north. waves
2 to 4 feet subsiding to 1 to 2 feet.
.saturday...north winds 5 to 15 knots becoming northwest. waves
1 to 3 feet subsiding to 1 foot or less.
.saturday night...northwest winds 5 to 15 knots becoming
southwest. waves 2 feet or less.
.sunday...southwest winds 15 to 20 knots becoming northwest 10 to
15 knots. waves 3 to 6 feet subsiding to 2 to 4 feet.
.monday...west winds 5 to 15 knots becoming southeast. a chance
of rain monday night. waves 1 to 3 feet.
.tuesday...south winds 10 to 15 knots becoming southwest 15 to
20 knots. rain. waves 2 to 4 feet building to 3 to 5 feet.
$$
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