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Latest Great Lakes Marine Forecast by KBUF
Issued 5/7/2026 4:03 AM America/New_York.
Valid through 5/7/2026 11:00 AM America/New_York.
fzus61 kbuf 070803
glfsl
expires:202605071500;;152855
forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 am edt thu may 7 2026
slz022-024-071500-
saint lawrence river from cape vincent to saint regis
403 am edt thu may 7 2026
.today...southwest winds 5 to 10 knots becoming west. sunny this
morning, then becoming partly sunny.
.tonight...southwest winds 10 knots or less becoming west. partly
to mostly cloudy.
.friday...west winds 10 knots or less becoming southwest. mostly
sunny.
.friday night...southwest winds 10 knots or less becoming south.
mainly clear in the evening, then becoming partly cloudy.
.saturday...south winds 10 knots or less increasing to 10 to
15 knots. a chance of rain showers.
.sunday...southwest winds 5 to 15 knots becoming west less than
10 knots. a chance of rain showers during the day.
.monday...northwest winds 10 knots or less. a chance of rain
showers.
$$
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Latest Great Lakes Marine Forecast by KBUF
Issued 5/7/2026 4:02 AM America/New_York.
Valid through 5/7/2026 11:00 AM America/New_York.
fzus61 kbuf 070802
glflo
expires:202605071500;;152845
open lake forecast for lake ontario
national weather service buffalo ny
402 am edt thu may 7 2026
for waters beyond five nautical miles of shore on lake ontario
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...a broad area of high pressure averaging 30.1 inches will
build from the ohio valley today to off the mid atlantic coast by
friday night. a 29.5 inch low will then move from the upper great
lakes saturday to central quebec sunday before weakening over
northern quebec monday. a 30.3 inch high is then forecast to build
from northwest ontario province monday to the central great lakes
tuesday.
loz063>065-071500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt thu may 7 2026
.today...west winds 5 to 15 knots increasing to 15 to 20 knots.
waves 1 to 3 feet.
.tonight...west winds 5 to 15 knots. a chance of rain showers.
waves 2 feet or less.
.friday...west winds 5 to 15 knots becoming southwest. waves
2 feet or less.
.friday night...southwest winds 5 to 10 knots becoming south. a
chance of showers overnight. waves 2 feet or less.
.saturday...southeast winds 5 to 10 knots becoming south and
increasing to 15 to 20 knots. a chance of showers during the day,
then showers likely saturday night. waves 2 feet or less building
to 2 to 4 feet.
.sunday...west winds 15 to 20 knots becoming northwest 5 to
15 knots. a chance of showers. waves 2 to 4 feet subsiding to
1 to 3 feet.
.monday...northwest winds 5 to 15 knots. waves 1 to 3 feet.
$$
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