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(1/4)
Latest Great Lakes Marine Forecast by KBUF
Issued 12/27/2025 4:02 AM America/New_York.
Valid through 12/27/2025 11:00 AM America/New_York.
fzus61 kbuf 270902
glflo
expires:202512271600;;303285
open lake forecast for lake ontario
national weather service buffalo ny
402 am est sat dec 27 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 ridge of high pressure averaging 30.2 inches will
build into quebec and new england through tonight. low pressure
averaging 29.1 inches will then cross the lower great lakes sunday
night, before moving to northern new england and southern quebec
monday, then to the canadian maritimes by tuesday while deepening to
28.9 inches.
loz062-271600-
lake ontario open waters from the niagara river to hamlin beach-
402 am est sat dec 27 2025
...gale watch in effect from monday morning through late tuesday
night...
.today...north winds 5 to 10 knots becoming east. waves 2 to
4 feet subsiding to 1 to 2 feet.
.tonight...east winds 5 to 15 knots becoming southeast. waves
1 to 2 feet.
.sunday...southeast winds 10 to 15 knots becoming east. rain
likely in the afternoon. waves 1 to 2 feet.
.sunday night...east winds 10 to 15 knots becoming south 15 to
20 knots. rain. waves 2 to 4 feet.
.monday...southwest gales to 40 knots becoming west. rain and
snow during the day, then snow showers monday night. waves 10 to
13 feet building to 14 to 19 feet. waves occasionally around
24 feet.
.tuesday...northwest gales to 40 knots becoming west and
diminishing to 30 knots. snow showers during the day, then a
chance of snow showers tuesday night. waves 12 to 16 feet
subsiding to 8 to 11 feet. waves occasionally around 20 feet.
.wednesday...west winds to 30 knots. snow showers likely. waves
8 to 12 feet subsiding to 7 to 10 feet. waves occasionally around
15 feet.
$$
(2/4)
Latest Great Lakes Marine Forecast by KBUF
Issued 12/27/2025 4:02 AM America/New_York.
Valid through 12/27/2025 11:00 AM America/New_York.
fzus61 kbuf 270902
glflo
expires:202512271600;;303286
open lake forecast for lake ontario
national weather service buffalo ny
402 am est sat dec 27 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 ridge of high pressure averaging 30.2 inches will
build into quebec and new england through tonight. low pressure
averaging 29.1 inches will then cross the lower great lakes sunday
night, before moving to northern new england and southern quebec
monday, then to the canadian maritimes by tuesday while deepening to
28.9 inches.
loz063-271600-
lake ontario open waters from hamlin beach to sodus bay-
402 am est sat dec 27 2025
...gale watch in effect from monday morning through late tuesday
night...
.today...north winds 5 to 15 knots becoming northeast. waves 2 to
4 feet subsiding to 1 to 2 feet.
.tonight...northeast winds 5 to 10 knots becoming southeast.
waves 1 to 2 feet.
.sunday...southeast winds 10 to 15 knots. a chance of rain in the
afternoon. waves 1 to 2 feet.
.sunday night...southeast winds 15 to 20 knots becoming south.
rain. waves 1 to 3 feet building to 3 to 5 feet.
.monday...southwest gales to 35 knots becoming west to 40 knots.
rain and snow showers during the day, then lake effect snow
showers monday night. waves 9 to 12 feet building to 16 to
21 feet. waves occasionally around 27 feet.
.tuesday...northwest gales to 40 knots becoming west and
diminishing to 30 knots. snow showers. waves 15 to 19 feet
subsiding to 10 to 15 feet. waves occasionally around 24 feet.
.wednesday...west gales to 35 knots becoming northwest and
diminishing to 30 knots. snow showers. waves 9 to 13 feet
subsiding to 8 to 11 feet. waves occasionally around 16 feet.
$$
(3/4)
Latest Great Lakes Marine Forecast by KBUF
Issued 12/27/2025 4:02 AM America/New_York.
Valid through 12/27/2025 11:00 AM America/New_York.
fzus61 kbuf 270902
glflo
expires:202512271600;;303287
open lake forecast for lake ontario
national weather service buffalo ny
402 am est sat dec 27 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 ridge of high pressure averaging 30.2 inches will
build into quebec and new england through tonight. low pressure
averaging 29.1 inches will then cross the lower great lakes sunday
night, before moving to northern new england and southern quebec
monday, then to the canadian maritimes by tuesday while deepening to
28.9 inches.
loz064-065-271600-
lake ontario open waters from sodus bay to the saint lawrence
river-
402 am est sat dec 27 2025
...gale watch in effect from monday morning through late tuesday
night...
.today...north winds 5 to 15 knots becoming northeast. waves 1 to
3 feet.
.tonight...northeast winds 5 to 10 knots becoming southeast.
waves 1 foot or less.
.sunday...southeast winds 10 to 15 knots. a chance of rain in the
afternoon. waves 2 feet or less.
.sunday night...southeast winds 10 to 15 knots increasing to
15 to 25 knots. rain. waves 1 to 3 feet building to 3 to 5 feet.
.monday...south winds to 30 knots becoming west and increasing to
40 knot gales. rain and snow showers during the day, then lake
effect snow showers monday night. waves 7 to 10 feet building to
16 to 21 feet. waves occasionally around 27 feet.
.tuesday...northwest gales to 40 knots becoming west and
diminishing to 30 knots. lake effect snow showers. waves 15 to
19 feet subsiding to 10 to 13 feet. waves occasionally around
24 feet.
.wednesday...west winds to 30 knots becoming northwest. lake
effect snow showers. waves 10 to 14 feet. waves occasionally
around 18 feet.
$$
(4/4)
Latest Great Lakes Marine Forecast by KBUF
Issued 12/27/2025 4:02 AM America/New_York.
Valid through 12/27/2025 11:00 AM America/New_York.
fzus61 kbuf 270902
glfsl
expires:202512271600;;303283
forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 am est sat dec 27 2025
slz022-271600-
saint lawrence river from cape vincent to ogdensburg-
402 am est sat dec 27 2025
.today...northeast winds 10 knots or less. mostly cloudy early,
then becoming mostly sunny.
.tonight...northeast winds less than 10 knots. partly to mostly
cloudy.
.sunday...light and variable winds. partly sunny in the morning,
then becoming mostly cloudy.
.sunday night...northeast winds 10 knots or less becoming east.
freezing rain in the evening, then freezing rain and rain
overnight.
.monday...south winds 15 to 20 knots becoming west. rain, snow
showers and freezing rain during the day, then lake effect snow
showers monday night.
.tuesday...west winds 15 to 20 knots diminishing to 5 to
15 knots. snow showers during the day, then a chance of snow
showers tuesday night.
.wednesday...southwest winds 5 to 10 knots becoming west. snow
showers likely.
$$
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