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(1/3)
Latest Great Lakes Marine Forecast by KBUF
Issued 4/11/2026 10:05 PM America/New_York.
Valid through 4/12/2026 5:00 AM America/New_York.
fzus61 kbuf 120205
glflo
expires:202604120900;;219131
open lake forecast for lake ontario
national weather service buffalo ny
1005 pm edt sat apr 11 2026
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 30.5 inch area of high pressure over the lake this
evening, will slip towards new england later tonight and sunday and
off the coast sunday night. a 29.4 inch low will then move
northeastward from the upper midwest sunday to near james bay sunday
night, while pushing an attendant warm front across the lake on
sunday. this low will strengthen to 29.2 inches while continuing to
trek northeast into northern quebec monday, with a trailing cold
front stalling near the lake monday through tuesday. a 29.5 inch
surface low advancing through the upper great lakes wednesday will
lift this frontal boundary northward into canada. this 29.5 inch low
will continue northeast into central quebec on thursday while
dragging an attendant cold front across the lake. a 30.2 inch high
will then build over the lower great lakes thursday night and friday.
loz062-120900-
lake ontario open waters from the niagara river to hamlin beach-
1005 pm edt sat apr 11 2026
.overnight...northwest winds less than 10 knots becoming
southeast. waves 1 foot or less.
.sunday...southeast winds 5 to 10 knots becoming east. a chance
of rain showers late in the morning. rain showers in the
afternoon. waves 2 feet or less.
.sunday night...southeast winds 10 to 15 knots becoming southwest
and increasing to 15 to 25 knots. showers likely. waves 1 to
2 feet building to 3 to 6 feet.
.monday...southwest winds 20 to 25 knots. showers. waves 3 to
6 feet building to 4 to 7 feet. waves occasionally around 9 feet.
.monday night...southwest winds 15 to 20 knots diminishing to
10 to 15 knots. a chance of showers. waves 3 to 6 feet subsiding
to 1 to 2 feet.
.tuesday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. showers likely. waves 1 to 3 feet building to 2 to
4 feet.
.wednesday...southwest winds 15 to 20 knots. showers likely
during the day, then showers likely with a chance of
thunderstorms wednesday night. waves 2 to 4 feet.
.thursday...southwest winds 15 to 20 knots becoming west 5 to
15 knots. a chance of showers. waves 2 to 4 feet subsiding to
1 to 2 feet.
winds and waves higher in and near thunderstorms.
$$
(2/3)
Latest Great Lakes Marine Forecast by KBUF
Issued 4/11/2026 10:05 PM America/New_York.
Valid through 4/12/2026 5:00 AM America/New_York.
fzus61 kbuf 120205
glflo
expires:202604120900;;219132
open lake forecast for lake ontario
national weather service buffalo ny
1005 pm edt sat apr 11 2026
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 30.5 inch area of high pressure over the lake this
evening, will slip towards new england later tonight and sunday and
off the coast sunday night. a 29.4 inch low will then move
northeastward from the upper midwest sunday to near james bay sunday
night, while pushing an attendant warm front across the lake on
sunday. this low will strengthen to 29.2 inches while continuing to
trek northeast into northern quebec monday, with a trailing cold
front stalling near the lake monday through tuesday. a 29.5 inch
surface low advancing through the upper great lakes wednesday will
lift this frontal boundary northward into canada. this 29.5 inch low
will continue northeast into central quebec on thursday while
dragging an attendant cold front across the lake. a 30.2 inch high
will then build over the lower great lakes thursday night and friday.
loz063>065-120900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1005 pm edt sat apr 11 2026
.overnight...northwest winds 10 knots or less becoming
southeast. waves 2 feet or less.
.sunday...southeast winds 5 to 15 knots. rain showers in the
afternoon. waves 2 feet or less.
.sunday night...southeast winds 15 to 25 knots becoming south.
showers likely. waves 2 to 4 feet building to 4 to 7 feet. waves
occasionally around 9 feet.
.monday...southwest winds 15 to 25 knots. showers. waves 3 to
6 feet building to 4 to 7 feet. waves occasionally around 9 feet.
.monday night...southwest winds 15 to 20 knots diminishing to
5 to 15 knots. showers in the evening, then a chance of showers
overnight. waves 4 to 7 feet subsiding to 1 to 3 feet. waves
occasionally around 9 feet.
.tuesday...south winds 5 to 15 knots becoming southwest. showers
likely with a chance of thunderstorms. waves 1 to 3 feet.
.wednesday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. showers likely. waves 1 to 3 feet building to 2 to
4 feet.
.thursday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. a chance of showers. waves 3 to 5 feet subsiding to
1 to 2 feet.
winds and waves higher in and near thunderstorms.
$$
(3/3)
Latest Great Lakes Marine Forecast by KCLE
Issued 4/12/2026 3:37 AM America/New_York.
Valid through 4/12/2026 10:15 AM America/New_York.
fzus61 kcle 120737
glfle
expires:202604121415;;232330
open lake forecast for lake erie
national weather service cleveland oh
337 am edt sun apr 12 2026
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 warm front will lift across lake erie this afternoon with a cold
front approaching from the northwest on monday. the cold front
will slow to the north of the lake tuesday and wednesday before
low pressure 20.60 inches passes to the northwest of lake erie on
thursday.
lez061-168-169-121415-
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-
337 am edt sun apr 12 2026
.today...east winds 5 to 15 knots becoming south. a slight chance
of rain showers from late morning on. waves 2 feet or less.
.tonight...south winds 15 to 20 knots becoming southwest. showers
likely late. waves 1 to 3 feet building to 3 to 5 feet.
.monday...southwest winds 15 to 20 knots. showers likely in the
morning, then a chance of showers in the afternoon. waves 3 to
5 feet.
.monday night...southwest winds 15 to 20 knots becoming south
10 to 15 knots. a chance of showers in the evening, then showers
likely overnight. waves 2 to 4 feet subsiding to 1 to 2 feet.
.tuesday...southwest winds 10 to 15 knots. showers likely with a
chance of thunderstorms. waves 1 to 3 feet.
.wednesday...southwest winds 5 to 10 knots. showers likely. waves
1 to 3 feet building to 2 to 4 feet.
.thursday...southwest winds 5 to 15 knots. showers likely during
the day, then a chance of showers thursday night. waves 1 to
3 feet subsiding to 1 foot or less.
winds and waves higher in and near thunderstorms.
$$
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