(1/4)
Latest Great Lakes Marine Forecast by KBUF
Issued 7/11/2026 4:03 AM America/New_York.
Valid through 7/11/2026 11:00 AM America/New_York.
fzus61 kbuf 110803
glfsl
expires:202607111500;;780675
forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 am edt sat jul 11 2026
slz022-024-111500-
saint lawrence river from cape vincent to saint regis
403 am edt sat jul 11 2026
.today...northeast winds 10 knots or less. sunny.
.tonight...east winds 5 to 10 knots becoming light and variable.
mainly clear.
.sunday...light and variable winds. sunny.
.sunday night...southwest winds less than 10 knots. mainly clear.
.monday...southwest winds 5 to 10 knots. mainly clear, then
becoming partly cloudy.
.tuesday...southwest winds 10 to 15 knots becoming west. partly
cloudy.
.wednesday...west winds 10 knots or less. partly cloudy.
$$
(2/4)
Latest Great Lakes Marine Forecast by KBUF
Issued 7/11/2026 4:02 AM America/New_York.
Valid through 7/11/2026 11:00 AM America/New_York.
fzus61 kbuf 110802
glflo
expires:202607111500;;780658
open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat jul 11 2026
for waters beyond five nautical miles of shore on lake ontario
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...a large 30.2 inch high will build south across the lower
great lakes through this weekend, before sliding east into new
england monday, then off the coast by tuesday. this will allow a
warm front to sweep northeastward across the lake tuesday, followed
by a cold front pushing south across the lake on wednesday.
loz062-111500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt sat jul 11 2026
.today...northeast winds 5 to 10 knots becoming east. waves
1 foot or less.
.tonight...east winds 10 knots or less becoming northeast. waves
1 foot or less.
.sunday...northeast winds less than 10 knots becoming east. waves
1 foot or less.
.sunday night...southeast winds less than 10 knots. waves 1 foot
or less.
.monday...southwest winds 5 to 15 knots. waves 1 to 3 feet.
.tuesday...southwest winds 15 to 20 knots becoming west. waves
2 to 4 feet building to 3 to 5 feet.
.wednesday...west winds 5 to 15 knots becoming northwest. waves
2 to 4 feet subsiding to 1 to 3 feet.
$$
(3/4)
Latest Great Lakes Marine Forecast by KBUF
Issued 7/11/2026 4:02 AM America/New_York.
Valid through 7/11/2026 11:00 AM America/New_York.
fzus61 kbuf 110802
glflo
expires:202607111500;;780659
open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat jul 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 large 30.2 inch high will build south across the lower
great lakes through this weekend, before sliding east into new
england monday, then off the coast by tuesday. this will allow a
warm front to sweep northeastward across the lake tuesday, followed
by a cold front pushing south across the lake on wednesday.
loz063>065-111500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt sat jul 11 2026
.today...northeast winds 5 to 15 knots. waves 2 feet or less.
.tonight...northeast winds 5 to 15 knots diminishing to less than
10 knots. waves 2 feet or less.
.sunday...east winds 10 knots or less becoming north. waves
1 foot or less.
.sunday night...northwest winds less than 10 knots becoming
southwest. waves 1 foot or less.
.monday...southwest winds 5 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet.
.tuesday...southwest winds 15 to 25 knots becoming west. waves
3 to 6 feet building to 4 to 7 feet. waves occasionally around
9 feet.
.wednesday...west winds 15 to 20 knots becoming northwest 10 to
15 knots. waves 3 to 6 feet subsiding to 1 to 3 feet.
$$
(4/4)
Latest Great Lakes Marine Forecast by KCLE
Issued 7/11/2026 4:06 AM America/New_York.
Valid through 7/11/2026 10:30 AM America/New_York.
fzus61 kcle 110806
glfle
expires:202607111430;;780900
open lake forecast for lake erie
national weather service cleveland oh
406 am edt sat jul 11 2026
for waters beyond five nautical miles of shore on lake erie
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...
low pressure of 29.90 inches will move east across the ohio
valley today. high pressure of 30.10 inches will build over the
central great lakes on sunday then settle south to the ohio valley
through the first half of next week.
lez061-168-169-111430-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
406 am edt sat jul 11 2026
.today...northeast winds 5 to 15 knots. waves 1 to 3 feet.
.tonight...northeast winds 5 to 15 knots becoming east. waves
1 to 3 feet.
.sunday...east winds 10 to 15 knots becoming northeast. waves
1 to 3 feet.
.sunday night...northeast winds 5 to 15 knots becoming southeast
less than 10 knots. waves 2 feet or less.
.monday...south winds 10 knots or less becoming southwest. waves
1 foot or less.
.tuesday...southwest winds 10 to 15 knots becoming west. waves
1 to 3 feet building to 2 to 4 feet.
.wednesday...west winds 5 to 15 knots becoming northwest. waves
1 to 3 feet.
$$
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