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Latest Great Lakes Marine Forecast by KBUF
Issued 9/9/2026 10:02 PM America/New_York.
Valid through 9/10/2026 5:00 AM America/New_York.
fzus61 kbuf 100202
glfsl
expires:202609100900;;663515
forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1002 pm edt wed sep 9 2026
slz022-024-100900-
saint lawrence river from cape vincent to saint regis
1002 pm edt wed sep 9 2026
.rest of tonight...southwest winds 15 to 20 knots diminishing to
10 to 15 knots. showers likely late this evening, then a chance
of showers after midnight.
.thursday...west winds 10 to 15 knots. mostly sunny.
.thursday night...northwest winds 5 to 10 knots becoming light
and variable. partly cloudy in the evening, then becoming mainly
clear.
.friday...light and variable winds becoming west 5 to 10 knots.
sunny.
.friday night...southwest winds less than 10 knots becoming
south. clear.
.saturday...south winds 5 to 15 knots. mainly clear, then
becoming partly cloudy.
.sunday...southwest winds 10 knots or less becoming west. a
chance of showers.
.monday...northwest winds 10 knots or less becoming southeast.
partly to mostly cloudy.
$$
(2/3)
Latest Great Lakes Marine Forecast by KBUF
Issued 9/9/2026 10:01 PM America/New_York.
Valid through 9/10/2026 5:00 AM America/New_York.
fzus61 kbuf 100201
glflo
expires:202609100900;;663487
open lake forecast for lake ontario
national weather service buffalo ny
1001 pm edt wed sep 9 2026
for waters beyond five nautical miles of shore on lake ontario
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...a cold front sweeps eastward across lake ontario late
this evening through early thursday morning. behind the front, a
high pressure ridge averaging 30.0 inches builds from the western
great lakes through friday and then exits toward new england on
saturday. a warm front should sweep northeastward across lake
ontario saturday night and be followed by a cold front sweeping
eastward across the lake later on sunday. behind the cold front, a
30.1 inch ridge should slide eastward across the lake through monday.
loz062-100900-
lake ontario open waters from the niagara river to hamlin beach-
1001 pm edt wed sep 9 2026
.overnight...southwest winds 15 to 20 knots becoming west.
waves 3 to 5 feet subsiding to 2 to 4 feet.
.thursday...west winds 10 to 15 knots. waves 2 to 4 feet.
.thursday night...northwest winds 15 to 20 knots diminishing to
10 to 15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet.
.friday...northwest winds 10 knots or less becoming southwest.
waves 2 feet or less.
.friday night...southwest winds 10 knots or less becoming south.
waves 1 foot or less.
.saturday...south winds 10 knots or less becoming southwest.
waves 1 foot or less.
.sunday...west winds 5 to 15 knots becoming northwest. waves
1 foot or less.
.monday...north winds 5 to 15 knots becoming south. waves 1 to
3 feet.
$$
(3/3)
Latest Great Lakes Marine Forecast by KBUF
Issued 9/9/2026 10:01 PM America/New_York.
Valid through 9/10/2026 5:00 AM America/New_York.
fzus61 kbuf 100201
glflo
expires:202609100900;;663488
open lake forecast for lake ontario
national weather service buffalo ny
1001 pm edt wed sep 9 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 cold front sweeps eastward across lake ontario late
this evening through early thursday morning. behind the front, a
high pressure ridge averaging 30.0 inches builds from the western
great lakes through friday and then exits toward new england on
saturday. a warm front should sweep northeastward across lake
ontario saturday night and be followed by a cold front sweeping
eastward across the lake later on sunday. behind the cold front, a
30.1 inch ridge should slide eastward across the lake through monday.
loz063>065-100900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1001 pm edt wed sep 9 2026
.overnight...southwest winds 15 to 20 knots becoming west.
a chance of showers. waves 3 to 5 feet.
.thursday...west winds 15 to 20 knots. waves 3 to 6 feet.
.thursday night...northwest winds 15 to 20 knots diminishing to
5 to 15 knots. waves 3 to 6 feet subsiding to 2 to 4 feet.
.friday...northwest winds 10 knots or less becoming west. waves
2 feet or less.
.friday night...west winds 5 to 10 knots becoming south. waves
1 foot or less.
.saturday...south winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet.
.sunday...southwest winds 10 to 15 knots becoming northwest.
waves 1 to 3 feet.
.monday...north winds 5 to 10 knots becoming south and increasing
to 15 to 20 knots. waves 1 to 3 feet.
$$
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