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Latest Great Lakes Marine Forecast by KBUF
Issued 4/27/2026 10:02 AM America/New_York.
Valid through 4/27/2026 5:00 PM America/New_York.
fzus61 kbuf 271402
glflo
expires:202604272100;;613292
open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt mon apr 27 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 30.3 inch high will weaken across the lower great
lakes region today. a 29.4 inch low over the great plains tonight
will advance northeast into the upper great lakes later tonight into
tuesday morning, while pushing a warm front across the lake. the low
will head northeast to james bay tuesday night sending a cold front
across the lake. an inverted trough averaging 29.7 inch inverted
trough is expected across the lower great lakes wednesday through
wednesday night. the trough/low will track to the coast of new
england through friday while also deepening to 29.5 inches.
loz062-272100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt mon apr 27 2026
.this afternoon...east winds 5 to 15 knots. waves 1 to 3 feet.
.tonight...east winds 15 to 20 knots becoming southeast 10 to
15 knots. waves 2 to 4 feet.
.tuesday...southeast winds 10 to 15 knots becoming south 15 to
20 knots. showers. waves 2 to 4 feet.
.tuesday night...southwest winds 15 to 20 knots becoming
northwest and diminishing to less than 10 knots overnight. a
chance of showers in the evening. waves 1 to 3 feet.
.wednesday...north winds 5 to 15 knots becoming northwest 15 to
20 knots. showers. waves 1 foot or less building to 2 to 4 feet.
.thursday...northwest winds 15 to 20 knots. a chance of rain
showers during the day. waves 2 to 4 feet building to 3 to
5 feet.
.friday...northwest winds 15 to 20 knots. waves 3 to 6 feet.
$$
(2/3)
Latest Great Lakes Marine Forecast by KBUF
Issued 4/27/2026 10:02 AM America/New_York.
Valid through 4/27/2026 5:00 PM America/New_York.
fzus61 kbuf 271402
glflo
expires:202604272100;;613293
open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt mon apr 27 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 30.3 inch high will weaken across the lower great
lakes region today. a 29.4 inch low over the great plains tonight
will advance northeast into the upper great lakes later tonight into
tuesday morning, while pushing a warm front across the lake. the low
will head northeast to james bay tuesday night sending a cold front
across the lake. an inverted trough averaging 29.7 inch inverted
trough is expected across the lower great lakes wednesday through
wednesday night. the trough/low will track to the coast of new
england through friday while also deepening to 29.5 inches.
loz063>065-272100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt mon apr 27 2026
.this afternoon...southeast winds 10 knots or less becoming
northeast. waves 1 foot or less.
.tonight...east winds 10 to 15 knots becoming southeast 15 to
20 knots. waves 1 to 3 feet.
.tuesday...southeast winds 15 to 20 knots becoming south.
showers. waves 2 to 4 feet building to 3 to 5 feet.
.tuesday night...south winds 15 to 20 knots becoming west 10 to
15 knots. showers likely in the evening, then a chance of showers
overnight. waves 3 to 5 feet subsiding to 1 to 3 feet.
.wednesday...northwest winds 5 to 15 knots increasing to 15 to
20 knots. showers. waves 2 feet or less building to 2 to 4 feet.
.thursday...northwest winds 15 to 25 knots. rain showers likely
during the day, then a chance of rain showers thursday night.
waves 3 to 5 feet building to 4 to 7 feet. waves occasionally
around 9 feet.
.friday...northwest winds to 30 knots diminishing to 15 to
25 knots. a chance of rain showers. waves 6 to 9 feet subsiding
to 4 to 7 feet. waves occasionally around 11 feet.
$$
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Latest Great Lakes Marine Forecast by KCLE
Issued 4/27/2026 10:32 AM America/New_York.
Valid through 4/27/2026 4:15 PM America/New_York.
fzus61 kcle 271432
glfle
expires:202604272015;;614551
open lake forecast for lake erie
national weather service cleveland oh
1032 am edt mon apr 27 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 ridge averaging 30.10 inches departs tonight ahead of an
advancing cold front that will track west to east across lake erie
beginning early tuesday. a secondary trough averaging 29.70 inches
moves in from the southwest wednesday. high pressure 30.00 inches
builds in late thursday.
lez061-168-169-272015-
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-
1032 am edt mon apr 27 2026
.this afternoon...east winds 5 to 15 knots. waves 1 foot or less.
.tonight...east winds 10 to 15 knots becoming south and
increasing to 15 to 25 knots. a chance of showers with a slight
chance of thunderstorms after midnight. showers likely with a
slight chance of thunderstorms late. waves 1 to 3 feet building
to 4 to 7 feet. waves occasionally around 9 feet.
.tuesday...south winds 15 to 25 knots becoming southwest and
diminishing to 10 to 15 knots. showers likely in the morning,
then a chance of showers in the afternoon. waves 3 to 6 feet
subsiding to 2 to 4 feet.
.tuesday night...southwest winds 5 to 15 knots becoming north
less than 10 knots. waves 1 to 3 feet.
.wednesday...northeast winds 5 to 15 knots becoming northwest.
showers during the day, then a chance of showers wednesday night.
waves 1 to 3 feet.
.thursday...northwest winds 10 to 15 knots. waves 1 to 3 feet.
.friday...northwest winds 10 to 15 knots. waves 1 to 3 feet.
winds and waves higher in and near thunderstorms.
$$
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