(1/4)
Latest Great Lakes Marine Forecast by KBUF
Issued 12/10/2025 4:02 AM America/New_York.
Valid through 12/10/2025 11:00 AM America/New_York.
fzus61 kbuf 100902
glflo
expires:202512101600;;324334
open lake forecast for lake ontario
national weather service buffalo ny
402 am est wed dec 10 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 29.2 inch low will approach the region tonight and
move just northwest of the lake wednesday. the region will be
situated between a 29.1 inch low over the canadian maritimes and a
30.1 inch high over the southern plains thursday. a 29.9 inch ridge
of high pressure is expected to move into the great lakes region
friday. a 29.8 inch low may move north of the lake on saturday, then
30.2 inches will average across the lower great lakes region between
the departing low to the east and a 30.7 inch high over the plains
sunday.
loz063-101600-
lake ontario open waters from hamlin beach to sodus bay-
402 am est wed dec 10 2025
...gale watch in effect from late tonight through thursday
evening...
.today...south winds 15 to 25 knots becoming southwest. snow and
rain this morning, then rain this afternoon. waves 3 to 6 feet.
.tonight...west winds to 30 knots becoming northwest and
increasing to 35 knot gales. rain likely early, then a chance of
snow and rain late in the evening. snow showers after midnight.
waves 4 to 7 feet building to 10 to 13 feet. waves occasionally
around 16 feet.
.thursday...northwest winds to 30 knots becoming west and
increasing to 35 knot gales. lake effect snow showers. waves
10 to 13 feet. waves occasionally around 16 feet.
.thursday night...northwest gales to 35 knots diminishing to
30 knots. a chance of snow showers. waves 9 to 13 feet subsiding
to 5 to 8 feet. waves occasionally around 16 feet.
.friday...west winds 15 to 25 knots becoming southwest and
diminishing to 10 to 15 knots. a chance of snow showers. waves
4 to 7 feet subsiding to 2 to 4 feet. waves occasionally around
9 feet.
.saturday...southwest winds 15 to 25 knots becoming west to
30 knots. snow showers likely. waves 4 to 7 feet building to 6 to
10 feet. waves occasionally around 13 feet.
.sunday...west winds to 30 knots becoming northwest and
diminishing to 15 to 20 knots. snow showers likely during the
day, then a chance of snow showers sunday night. waves 4 to
7 feet subsiding to 3 to 6 feet. waves occasionally around
9 feet.
$$
(2/4)
Latest Great Lakes Marine Forecast by KBUF
Issued 12/10/2025 4:02 AM America/New_York.
Valid through 12/10/2025 11:00 AM America/New_York.
fzus61 kbuf 100902
glflo
expires:202512101600;;324335
open lake forecast for lake ontario
national weather service buffalo ny
402 am est wed dec 10 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 29.2 inch low will approach the region tonight and
move just northwest of the lake wednesday. the region will be
situated between a 29.1 inch low over the canadian maritimes and a
30.1 inch high over the southern plains thursday. a 29.9 inch ridge
of high pressure is expected to move into the great lakes region
friday. a 29.8 inch low may move north of the lake on saturday, then
30.2 inches will average across the lower great lakes region between
the departing low to the east and a 30.7 inch high over the plains
sunday.
loz064-065-101600-
lake ontario open waters from sodus bay to the saint lawrence
river-
402 am est wed dec 10 2025
...gale watch in effect from late tonight through thursday
evening...
.today...south winds to 30 knots becoming southwest. snow and
rain through early afternoon, then rain late. waves 4 to 7 feet.
waves occasionally around 9 feet.
.tonight...west winds to 30 knots becoming northwest and
increasing to 35 knot gales after midnight. rain early, then rain
and snow likely late in the evening. lake effect snow showers
likely after midnight. waves 5 to 9 feet building to 10 to
13 feet. waves occasionally around 16 feet.
.thursday...west winds to 30 knots increasing to 35 knot gales.
snow showers likely. waves 10 to 14 feet. waves occasionally
around 18 feet.
.thursday night...northwest gales to 35 knots diminishing to
30 knots. snow showers likely in the evening, then a chance of
snow showers overnight. waves 10 to 14 feet subsiding to 5 to
8 feet. waves occasionally around 18 feet.
.friday...northwest winds 15 to 25 knots becoming southwest and
diminishing to 10 to 15 knots. lake effect snow showers likely.
waves 4 to 7 feet subsiding to 2 to 4 feet. waves occasionally
around 9 feet.
.saturday...southwest winds 15 to 25 knots becoming west. snow
showers. waves 4 to 7 feet building to 8 to 11 feet, then
subsiding to 6 to 9 feet. waves occasionally around 14 feet.
.sunday...west winds 15 to 25 knots becoming northwest. snow
showers likely during the day, then a chance of snow showers
sunday night. waves 5 to 8 feet subsiding to 3 to 6 feet. waves
occasionally around 10 feet.
$$
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Latest Great Lakes Marine Forecast by KBUF
Issued 12/10/2025 4:02 AM America/New_York.
Valid through 12/10/2025 11:00 AM America/New_York.
fzus61 kbuf 100902
glfsl
expires:202512101600;;324331
forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 am est wed dec 10 2025
slz022-101600-
saint lawrence river from cape vincent to ogdensburg-
402 am est wed dec 10 2025
.today...south winds 5 to 10 knots. snow through early afternoon,
then snow and rain late.
.tonight...southwest winds 5 to 15 knots becoming west. snow and
rain in the evening, then snow showers likely after midnight.
.thursday...west winds 15 to 20 knots. snow showers likely.
.thursday night...west winds 15 to 20 knots diminishing to 5 to
15 knots. snow showers likely in the evening, then a chance of
snow showers overnight.
.friday...west winds 10 knots or less becoming south. a chance of
snow showers friday night.
.saturday...south winds 5 to 10 knots becoming southwest. snow
showers likely.
.sunday...west winds 5 to 10 knots becoming northwest. snow
showers likely during the day, then a chance of snow showers
sunday night.
$$
(4/4)
Latest Great Lakes Marine Forecast by KBUF
Issued 12/10/2025 4:02 AM America/New_York.
Valid through 12/10/2025 11:00 AM America/New_York.
fzus61 kbuf 100902
glfsl
expires:202512101600;;324332
forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 am est wed dec 10 2025
slz024-101600-
saint lawrence river from ogdensburg to saint regis-
402 am est wed dec 10 2025
.today...south winds 10 knots or less becoming east. a chance of
snow early, then snow from late morning on.
.tonight...east winds 5 to 15 knots becoming west 15 to 20 knots.
snow in the evening, then snow showers likely after midnight.
.thursday...west winds 15 to 20 knots. snow showers likely.
.thursday night...west winds 15 to 20 knots. snow showers likely
in the evening, then a chance of snow showers overnight.
.friday...west winds 5 to 15 knots becoming southwest less than
10 knots. partly to mostly cloudy.
.saturday...south winds 10 knots or less becoming southwest. snow
showers likely.
.sunday...west winds 5 to 10 knots. a chance of snow showers
during the day.
$$
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