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(1/3)
Latest Great Lakes Marine Forecast by KBUF
Issued 8/15/2026 4:02 AM America/New_York.
Valid through 8/15/2026 11:00 AM America/New_York.
fzus61 kbuf 150802
glflo
expires:202608151500;;221100
open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat aug 15 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 high pressure ridge averaging 30.2 inches impacts lake ontario
today before the ridge begins to exit eastward tonight. a low of
29.7 inches should move generally southeastward from near the
northern great lakes to near southern new england tonight through
monday. this low track should allow a warm front to drift
northeastward across lake ontario later on sunday before a cold
front sweeps eastward across the lake sunday night. behind the cold
front, a trough averaging 29.8 inches should linger over lake
ontario on monday. a high pressure ridge averaging 30.0 inches
should build from the upper midwest monday night and traverse lake
ontario on tuesday. this ridge should exit slowly eastward tuesday
night through wednesday as a cold front approaches from the
northwest.
loz062-151500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt sat aug 15 2026
.today...east winds 5 to 15 knots. waves 1 to 3 feet.
.tonight...east winds 10 to 15 knots becoming southeast. waves
1 to 3 feet.
.sunday...southeast winds 5 to 15 knots becoming east. a chance
of showers in the afternoon. waves 1 to 3 feet.
.sunday night...southeast winds 10 knots or less becoming
northwest. a chance of showers. waves 1 foot or less.
.monday...northwest winds 5 to 10 knots. waves 1 foot or less.
.tuesday...west winds 10 knots or less becoming southwest 10 to
15 knots. waves 2 feet or less.
.wednesday...southwest winds 10 to 15 knots becoming northwest.
showers likely. waves 1 to 3 feet.
$$
(2/3)
Latest Great Lakes Marine Forecast by KBUF
Issued 8/15/2026 4:02 AM America/New_York.
Valid through 8/15/2026 11:00 AM America/New_York.
fzus61 kbuf 150802
glflo
expires:202608151500;;221101
open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat aug 15 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 high pressure ridge averaging 30.2 inches impacts lake ontario
today before the ridge begins to exit eastward tonight. a low of
29.7 inches should move generally southeastward from near the
northern great lakes to near southern new england tonight through
monday. this low track should allow a warm front to drift
northeastward across lake ontario later on sunday before a cold
front sweeps eastward across the lake sunday night. behind the cold
front, a trough averaging 29.8 inches should linger over lake
ontario on monday. a high pressure ridge averaging 30.0 inches
should build from the upper midwest monday night and traverse lake
ontario on tuesday. this ridge should exit slowly eastward tuesday
night through wednesday as a cold front approaches from the
northwest.
loz063>065-151500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt sat aug 15 2026
.today...east winds 5 to 10 knots becoming northeast. waves
1 foot or less.
.tonight...northeast winds 5 to 15 knots becoming southeast.
waves 2 feet or less.
.sunday...southeast winds 5 to 15 knots. showers likely with a
chance of thunderstorms in the afternoon. waves 2 feet or less.
.sunday night...southeast winds 10 to 15 knots becoming
northwest. showers with a chance of thunderstorms in the evening,
then showers overnight. waves 2 feet or less.
.monday...northwest winds 5 to 10 knots. a chance of showers
during the day. waves 2 feet or less.
.tuesday...west winds 10 knots or less becoming southwest 10 to
15 knots. waves 2 feet or less.
.wednesday...south winds 5 to 15 knots becoming west. a chance of
showers during the day, then showers likely wednesday night.
waves 1 to 3 feet.
winds and waves higher in and near thunderstorms.
$$
(3/3)
Latest Great Lakes Marine Forecast by KBUF
Issued 8/15/2026 4:02 AM America/New_York.
Valid through 8/15/2026 11:00 AM America/New_York.
fzus61 kbuf 150802
glfsl
expires:202608151500;;221103
forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 am edt sat aug 15 2026
slz022-024-151500-
saint lawrence river from cape vincent to saint regis
402 am edt sat aug 15 2026
.today...northeast winds less than 10 knots becoming north. areas
of fog early.
.tonight...northeast winds less than 10 knots. partly cloudy.
.sunday...southeast winds less than 10 knots. showers likely in
the afternoon.
.sunday night...east winds 10 knots or less becoming west.
showers.
.monday...northwest winds less than 10 knots. a chance of showers
during the day.
.tuesday...light and variable winds. mainly clear, then becoming
partly cloudy.
.wednesday...south winds 5 to 10 knots becoming west. a chance of
showers during the day, then showers likely wednesday night.
$$
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