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(1/4)
Latest Great Lakes Marine Forecast by KBUF
Issued 12/3/2025 10:02 AM America/New_York.
Valid through 12/3/2025 5:00 PM America/New_York.
fzus61 kbuf 031502
glflo
expires:202512032200;;939993
open lake forecast for lake ontario
national weather service buffalo ny
1002 am est wed dec 3 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 30.2 inch surface high will build across the ohio
valley and lower great lakes later today into thursday morning
before pushing off the coast. a large 29.2 inch surface low near
hudson bay will push its cold front across the lake tonight, with
another 30.4 inch high building in its wake thursday night. the high
will then quickly move east of the lake friday. another cold front
will cross the lake late saturday and saturday night, this from a
29.3 inch low near northern james bay. then, another area of surface
high pressure averaging 30.3 inches will build eastward across the
great lakes through sunday.
loz063-032200-
lake ontario open waters from hamlin beach to sodus bay-
1002 am est wed dec 3 2025
.rest of today...southwest winds 15 to 25 knots. waves 1 to
3 feet building to 3 to 6 feet.
.tonight...southwest winds to 30 knots becoming west. lake effect
snow showers. waves 4 to 7 feet building to 6 to 10 feet. waves
occasionally around 13 feet.
.thursday...west winds to 30 knots becoming northwest. lake
effect snow showers. waves 8 to 11 feet building to 9 to 13 feet.
waves occasionally around 16 feet.
.thursday night...northwest winds to 30 knots becoming southwest
and diminishing to 15 to 20 knots. waves 7 to 10 feet subsiding
to 2 to 3 feet. waves occasionally around 13 feet.
.friday...south winds 15 to 20 knots becoming southwest. waves
2 to 4 feet.
.saturday...southwest winds 15 to 20 knots becoming northwest. a
chance of snow showers. waves 3 to 6 feet building to 4 to
7 feet, then subsiding to 3 to 6 feet. waves occasionally around
9 feet.
.sunday...northwest winds 10 to 15 knots becoming north. a chance
of snow showers. waves 2 to 4 feet subsiding to 1 to 3 feet.
$$
(2/4)
Latest Great Lakes Marine Forecast by KBUF
Issued 12/3/2025 10:02 AM America/New_York.
Valid through 12/3/2025 5:00 PM America/New_York.
fzus61 kbuf 031502
glflo
expires:202512032200;;939994
open lake forecast for lake ontario
national weather service buffalo ny
1002 am est wed dec 3 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 30.2 inch surface high will build across the ohio
valley and lower great lakes later today into thursday morning
before pushing off the coast. a large 29.2 inch surface low near
hudson bay will push its cold front across the lake tonight, with
another 30.4 inch high building in its wake thursday night. the high
will then quickly move east of the lake friday. another cold front
will cross the lake late saturday and saturday night, this from a
29.3 inch low near northern james bay. then, another area of surface
high pressure averaging 30.3 inches will build eastward across the
great lakes through sunday.
loz064-065-032200-
lake ontario open waters from sodus bay to the saint lawrence
river-
1002 am est wed dec 3 2025
.rest of today...southwest winds 15 to 25 knots. scattered snow
showers late this morning. waves 1 to 3 feet building to 3 to
6 feet.
.tonight...southwest winds to 30 knots becoming west. snow
showers likely early, then lake effect snow and rain showers late
in the evening. lake effect snow showers after midnight. waves
5 to 9 feet building to 7 to 11 feet. waves occasionally around
14 feet.
.thursday...west winds to 30 knots becoming northwest. lake
effect snow showers in the morning, then a chance of snow showers
in the afternoon. waves 8 to 11 feet building to 9 to 13 feet.
waves occasionally around 16 feet.
.thursday night...northwest winds to 30 knots becoming south and
diminishing to 10 to 15 knots overnight. a chance of snow showers
overnight. waves 7 to 10 feet subsiding to 1 to 3 feet. waves
occasionally around 13 feet.
.friday...south winds 15 to 25 knots becoming southwest. a chance
of snow showers. waves 3 to 6 feet.
.saturday...southwest winds 15 to 25 knots becoming northwest.
snow showers likely. waves 3 to 6 feet building to 4 to 7 feet,
then subsiding to 3 to 6 feet. waves occasionally around 9 feet.
.sunday...north winds 10 to 15 knots. a chance of snow showers.
waves 2 to 4 feet subsiding to 1 to 3 feet.
$$
(3/4)
Latest Great Lakes Marine Forecast by KBUF
Issued 12/3/2025 10:02 AM America/New_York.
Valid through 12/3/2025 5:00 PM America/New_York.
fzus61 kbuf 031502
glfsl
expires:202512032200;;939990
forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1002 am est wed dec 3 2025
slz022-032200-
saint lawrence river from cape vincent to ogdensburg-
1002 am est wed dec 3 2025
.this afternoon...south winds 5 to 15 knots becoming southwest.
scattered snow showers.
.tonight...southwest winds 15 to 20 knots becoming west 10 to
15 knots. lake effect snow showers.
.thursday...west winds 10 to 15 knots becoming northwest. lake
effect snow showers likely in the morning, then a chance of snow
showers in the afternoon.
.thursday night...northwest winds 5 to 15 knots becoming south
less than 10 knots. mainly clear.
.friday...south winds 5 to 15 knots. a chance of snow showers.
.saturday...south winds 5 to 10 knots becoming west. snow showers
likely.
.sunday...north winds less than 10 knots. a chance of snow
showers.
$$
(4/4)
Latest Great Lakes Marine Forecast by KBUF
Issued 12/3/2025 10:02 AM America/New_York.
Valid through 12/3/2025 5:00 PM America/New_York.
fzus61 kbuf 031502
glfsl
expires:202512032200;;939991
forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1002 am est wed dec 3 2025
slz024-032200-
saint lawrence river from ogdensburg to saint regis-
1002 am est wed dec 3 2025
.this afternoon...south winds 5 to 15 knots. scattered snow
showers late.
.tonight...southwest winds 10 to 15 knots becoming west 15 to
20 knots. lake effect snow showers.
.thursday...west winds 15 to 20 knots becoming northwest. lake
effect snow showers likely in the morning, then a chance of snow
showers in the afternoon.
.thursday night...northwest winds 5 to 15 knots becoming south.
mainly clear.
.friday...south winds 5 to 10 knots. a chance of snow showers.
.saturday...south winds 5 to 10 knots becoming west. snow showers
likely during the day, then a chance of snow showers saturday
night.
.sunday...northwest winds less than 10 knots. a chance of snow
showers.
$$
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