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Latest Great Lakes Marine Forecast by KBUF
Issued 9/20/2026 10:02 PM America/New_York.
Valid through 9/21/2026 5:00 AM America/New_York.
fzus61 kbuf 210202
glflo
expires:202609210900;;793420
open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt sun sep 20 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 30.4 inch high will ridge southeastward across the lake from
ontario province tonight. this high will then remain ridged across
the lakes while strengthening to 30.7 inches as it slowly drifts
east into quebec through midweek, where it will remain through
thursday. the high will then weaken to 30.3 inches while getting
shoved back westward into ontario province on friday in response to
a 29.3 inch low moving northward just off the mid-atlantic and
jersey coastline.
loz062-210900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt sun sep 20 2026
.overnight...northeast winds 15 to 25 knots. waves 1 to
3 feet building to 5 to 7 feet. waves occasionally around 9 feet.
.monday...northeast winds 15 to 25 knots. waves 3 to 6 feet.
.monday night...northeast winds 15 to 25 knots. waves 3 to 6 feet
building to 5 to 7 feet. waves occasionally around 9 feet.
.tuesday...northeast winds 20 to 25 knots becoming east. waves
5 to 8 feet. waves occasionally around 10 feet.
.tuesday night...east winds 15 to 25 knots. waves 5 to 8 feet.
waves occasionally around 10 feet.
.wednesday...east winds 15 to 25 knots. waves 3 to 6 feet.
.thursday...east winds 10 to 15 knots becoming northeast. waves
2 to 4 feet.
.friday...northeast winds 5 to 15 knots. waves 2 feet or less.
$$
(2/3)
Latest Great Lakes Marine Forecast by KBUF
Issued 9/20/2026 10:02 PM America/New_York.
Valid through 9/21/2026 5:00 AM America/New_York.
fzus61 kbuf 210202
glflo
expires:202609210900;;793421
open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt sun sep 20 2026
for waters beyond five nautical miles of shore on lake ontario
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...
a 30.4 inch high will ridge southeastward across the lake from
ontario province tonight. this high will then remain ridged across
the lakes while strengthening to 30.7 inches as it slowly drifts
east into quebec through midweek, where it will remain through
thursday. the high will then weaken to 30.3 inches while getting
shoved back westward into ontario province on friday in response to
a 29.3 inch low moving northward just off the mid-atlantic and
jersey coastline.
loz063>065-210900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt sun sep 20 2026
.overnight...northeast winds 15 to 25 knots. waves 1 to
3 feet building to 4 to 7 feet. waves occasionally around 9 feet.
.monday...northeast winds 15 to 25 knots. waves 4 to 7 feet
subsiding to 3 to 6 feet. waves occasionally around 9 feet.
.monday night...northeast winds 15 to 25 knots. waves 2 to 4 feet
building to 4 to 7 feet. waves occasionally around 9 feet.
.tuesday...northeast winds 15 to 25 knots. waves 4 to 7 feet
subsiding to 3 to 6 feet. waves occasionally around 9 feet.
.tuesday night...northeast winds 15 to 20 knots becoming east.
waves 3 to 5 feet.
.wednesday...east winds 15 to 20 knots. waves 3 to 5 feet
subsiding to 2 to 4 feet.
.thursday...east winds 10 to 15 knots becoming northeast. waves
2 to 4 feet subsiding to 1 to 3 feet.
.friday...northeast winds 10 to 15 knots. waves 1 to 3 feet.
$$
(3/3)
Latest Great Lakes Marine Forecast by KCLE
Issued 9/20/2026 9:24 PM America/New_York.
Valid through 9/21/2026 4:15 AM America/New_York.
fzus61 kcle 210124
glfle
expires:202609210815;;792823
open lake forecast for lake erie
national weather service cleveland oh
924 pm edt sun sep 20 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 cold front will slowly push south of lake erie tonight. the lake
will be between high pressure 30.40 inches to the north and low
pressure 29.90 inches to the south for at least the first half of
the week. high pressure 30.20 inches will build over the great
lakes by friday.
lez061-168-169-210815-
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-
924 pm edt sun sep 20 2026
.overnight...northeast winds 15 to 25 knots. waves 2 to
4 feet building to 3 to 6 feet.
.monday...northeast winds 15 to 25 knots. waves 4 to 7 feet.
waves occasionally around 9 feet.
.monday night...northeast winds to 30 knots diminishing to 15 to
25 knots. waves 5 to 8 feet. waves occasionally around 10 feet.
.tuesday...northeast winds 15 to 25 knots. waves 5 to 8 feet.
waves occasionally around 10 feet.
.tuesday night...east winds 15 to 25 knots. waves 4 to 7 feet
subsiding to 3 to 6 feet. waves occasionally around 9 feet.
.wednesday...east winds 15 to 20 knots. a chance of showers.
waves 3 to 6 feet.
.thursday...east winds 15 to 20 knots diminishing to 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet.
.friday...northeast winds 5 to 15 knots. waves 2 feet or less.
$$
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