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(1/4)
Latest Great Lakes Marine Forecast by KBUF
Issued 12/17/2025 4:02 AM America/New_York.
Valid through 12/17/2025 11:00 AM America/New_York.
fzus61 kbuf 170902
glflo
expires:202512171600;;727954
open lake forecast for lake ontario
national weather service buffalo ny
402 am est wed dec 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 29.0 inch low over northern ontario will move to
northern quebec by wednesday morning, with its trailing cold front
crossing the lake during wednesday. a 29.1 inch low near lake
superior thursday will deepen to 28.9 inches while moving to central
quebec by friday, with its trailing strong cold front crossing the
lake early friday morning. in its wake, a 30.1 inch high will slowly
build across the lake friday night and early saturday, then will
drift off the atlantic coastline later saturday and saturday night,
with a 29.5 inch low moving across ontario and quebec and pushing
its attendant cold front across the lake sunday. a large 30.6 inch
high will then build east across the lake monday.
loz062-171600-
lake ontario open waters from the niagara river to hamlin beach-
402 am est wed dec 17 2025
...gale warning in effect until 1 pm est this afternoon...
.today...southwest gales to 35 knots becoming west and
diminishing to 20 to 25 knots this afternoon. waves 10 to 14 feet
subsiding to 7 to 10 feet. waves occasionally around 18 feet.
.tonight...west winds 15 to 20 knots becoming south 10 to
15 knots. waves 4 to 7 feet subsiding to 1 to 3 feet. waves
occasionally around 9 feet.
.thursday...south winds 10 to 15 knots increasing to 15 to
20 knots. a chance of rain showers in the afternoon. waves 1 to
3 feet building to 2 to 4 feet.
.thursday night...south winds to 30 knots becoming southwest.
showers. waves 3 to 6 feet building to 5 to 8 feet. waves
occasionally around 10 feet.
.friday...west gales to 40 knots diminishing to 15 to 25 knots.
snow showers likely with rain showers during the day, then a
chance of snow showers friday night. waves 10 to 13 feet building
to 11 to 16 feet, then subsiding to 6 to 9 feet. waves
occasionally around 20 feet.
.saturday...southwest winds 15 to 25 knots becoming west to
30 knots. a chance of rain and snow showers. waves 2 to 4 feet
building to 6 to 9 feet. waves occasionally around 11 feet.
.sunday...west winds to 30 knots becoming northwest and
diminishing to 10 to 15 knots. a chance of snow showers during
the day. waves 7 to 10 feet subsiding to 2 to 4 feet. waves
occasionally around 13 feet.
$$
(2/4)
Latest Great Lakes Marine Forecast by KBUF
Issued 12/17/2025 4:02 AM America/New_York.
Valid through 12/17/2025 11:00 AM America/New_York.
fzus61 kbuf 170902
glflo
expires:202512171600;;727955
open lake forecast for lake ontario
national weather service buffalo ny
402 am est wed dec 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 29.0 inch low over northern ontario will move to
northern quebec by wednesday morning, with its trailing cold front
crossing the lake during wednesday. a 29.1 inch low near lake
superior thursday will deepen to 28.9 inches while moving to central
quebec by friday, with its trailing strong cold front crossing the
lake early friday morning. in its wake, a 30.1 inch high will slowly
build across the lake friday night and early saturday, then will
drift off the atlantic coastline later saturday and saturday night,
with a 29.5 inch low moving across ontario and quebec and pushing
its attendant cold front across the lake sunday. a large 30.6 inch
high will then build east across the lake monday.
loz063-171600-
lake ontario open waters from hamlin beach to sodus bay-
402 am est wed dec 17 2025
...gale warning in effect until 4 pm est this afternoon...
.today...southwest gales to 35 knots becoming west and
diminishing to 30 knots this afternoon. waves 10 to 15 feet
building to 11 to 16 feet. waves occasionally around 20 feet.
.tonight...west winds 15 to 25 knots becoming south 15 to
20 knots. waves 7 to 10 feet subsiding to 1 to 3 feet. waves
occasionally around 13 feet.
.thursday...south winds 15 to 25 knots increasing to 30 knots.
waves 2 to 4 feet building to 4 to 7 feet. waves occasionally
around 9 feet.
.thursday night...south winds to 30 knots. showers. waves 5 to
8 feet. waves occasionally around 10 feet.
.friday...southwest gales to 40 knots becoming west and
diminishing to 30 knots. snow and rain showers during the day,
then snow showers friday night. waves 10 to 14 feet building to
15 to 20 feet, then subsiding to 10 to 13 feet. waves
occasionally around 26 feet.
.saturday...west winds 10 to 15 knots becoming southwest and
increasing to 30 knots. a chance of rain and snow showers. waves
3 to 6 feet building to 7 to 10 feet. waves occasionally around
13 feet.
.sunday...west gales to 35 knots becoming northwest and
diminishing to 15 to 20 knots. a chance of snow showers during
the day. waves 10 to 13 feet subsiding to 3 to 6 feet. waves
occasionally around 16 feet.
$$
(3/4)
Latest Great Lakes Marine Forecast by KBUF
Issued 12/17/2025 4:02 AM America/New_York.
Valid through 12/17/2025 11:00 AM America/New_York.
fzus61 kbuf 170902
glflo
expires:202512171600;;727956
open lake forecast for lake ontario
national weather service buffalo ny
402 am est wed dec 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 29.0 inch low over northern ontario will move to
northern quebec by wednesday morning, with its trailing cold front
crossing the lake during wednesday. a 29.1 inch low near lake
superior thursday will deepen to 28.9 inches while moving to central
quebec by friday, with its trailing strong cold front crossing the
lake early friday morning. in its wake, a 30.1 inch high will slowly
build across the lake friday night and early saturday, then will
drift off the atlantic coastline later saturday and saturday night,
with a 29.5 inch low moving across ontario and quebec and pushing
its attendant cold front across the lake sunday. a large 30.6 inch
high will then build east across the lake monday.
loz064-065-171600-
lake ontario open waters from sodus bay to the saint lawrence
river-
402 am est wed dec 17 2025
...gale warning in effect until 4 pm est this afternoon...
.today...southwest gales to 35 knots becoming west and
diminishing to 30 knots this afternoon. a chance of rain showers.
waves 9 to 12 feet building to 11 to 16 feet. waves occasionally
around 20 feet.
.tonight...west winds 15 to 25 knots becoming south 15 to
20 knots. waves 8 to 11 feet subsiding to 2 to 4 feet. waves
occasionally around 14 feet.
.thursday...south winds 15 to 25 knots increasing to 30 knots.
waves 3 to 6 feet building to 6 to 9 feet. waves occasionally
around 11 feet.
.thursday night...south winds to 30 knots. showers. waves 6 to
10 feet. waves occasionally around 13 feet.
.friday...west gales to 45 knots diminishing to 30 knots. lake
effect rain and snow showers during the day, then lake effect
snow showers friday night. waves 10 to 14 feet building to 16 to
21 feet, then subsiding to 10 to 14 feet. waves occasionally
around 27 feet.
.saturday...west winds 15 to 25 knots becoming southwest to
30 knots. a chance of snow and rain showers during the day, then
rain showers likely with a chance of snow showers saturday night.
waves 3 to 6 feet building to 7 to 10 feet. waves occasionally
around 13 feet.
.sunday...west winds to 30 knots becoming northwest and
diminishing to 15 to 20 knots. a chance of snow and rain showers
during the day. waves 10 to 13 feet subsiding to 4 to 7 feet.
waves occasionally around 16 feet.
$$
(4/4)
Latest Great Lakes Marine Forecast by KCLE
Issued 12/17/2025 3:00 AM America/New_York.
Valid through 12/17/2025 10:15 AM America/New_York.
fzus61 kcle 170800
glfle
expires:202512171515;;725200
open lake forecast for lake erie
national weather service cleveland oh
300 am est wed dec 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...
a very weak cold front sweeps eastward across lake erie and is
followed by a ridge averaging 30.00 inches building from the upper
midwest today. as the ridge exits eastward tonight, a warm front
sweeps northward across lake erie. a low should wobble eastward
across the northern great lakes region on thursday and then wobble
northeastward toward west-central quebec while deepening to 28.90
inches thursday night. this low track will allow a strong cold
front to sweep eastward across lake erie thursday night. behind
the front, a trough averaging 29.90 inches should linger over lake
erie on friday as a ridge attempts to build from the upper
midwest. this ridge, averaging 30.10 inches, should traverse lake
erie from west to east on friday night through saturday. on the
backside of the ridge, a warm front should sweep generally
northward across lake erie friday night. during saturday night, a
cold front should sweep eastward across lake erie. behind the
front, a ridge averaging 30.20 inches should build from the upper
midwest through sunday.
lez061-168-169-171515-
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-
300 am est wed dec 17 2025
.today...southwest winds to 30 knots becoming west 15 to
25 knots. a slight chance of rain showers early. waves 7 to
11 feet subsiding to 5 to 8 feet. waves occasionally around
14 feet.
.tonight...southwest winds 10 to 15 knots becoming south 15 to
20 knots. waves 3 to 6 feet subsiding to 2 to 4 feet.
.thursday...south winds 15 to 25 knots increasing to 30 knots. a
chance of rain in the afternoon. waves 3 to 6 feet building to
5 to 8 feet. waves occasionally around 10 feet.
.thursday night...south winds to 30 knots becoming southwest and
increasing to 35 knot gales overnight. rain. waves 5 to 8 feet
building to 10 to 13 feet. waves occasionally around 16 feet.
.friday...west gales to 35 knots diminishing to 15 to 25 knots. a
chance of snow showers during the day. waves 11 to 16 feet
subsiding to 4 to 7 feet. waves occasionally around 20 feet.
.saturday...southwest winds 15 to 25 knots becoming west to
30 knots. waves 3 to 5 feet building to 6 to 9 feet. waves
occasionally around 11 feet.
.sunday...west winds to 30 knots becoming northwest and
diminishing to 10 to 15 knots. waves 5 to 8 feet subsiding to
2 to 3 feet. waves occasionally around 10 feet.
$$
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