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(1/3)
Latest Great Lakes Marine Forecast by KBUF
Issued 7/12/2025 4:02 AM America/New_York.
Valid through 7/12/2025 11:00 AM America/New_York.
fzus61 kbuf 120802
glflo
expires:202507121500;;304833
open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat jul 12 2025
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 29.7 inch low over the great lakes will track across
southeast ontario today then arrive across james bay tonight while
deepening to 29.3 inches. in the process, this system will push a
warm front across the lake, followed by a slow-moving trailing cold
front on sunday into sunday night. a 30.1 inch high over the ohio
valley will then build across the lower great lakes monday through
wednesday.
loz062-121500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt sat jul 12 2025
.today...south winds 10 knots or less becoming east. a chance of
showers early. waves 1 foot or less.
.tonight...southeast winds 5 to 10 knots becoming southwest. a
chance of showers and thunderstorms late. waves 2 feet or less.
.sunday...southwest winds 5 to 15 knots. showers likely with a
chance of thunderstorms. waves 1 to 2 feet.
.sunday night...southwest winds 5 to 10 knots becoming west.
showers likely with a chance of thunderstorms in the evening.
waves 2 feet or less.
.monday...west winds 5 to 15 knots becoming southwest. waves
2 feet or less.
.tuesday...west winds 10 knots or less becoming south. waves
1 foot or less.
.wednesday...southwest winds 5 to 15 knots. a chance of showers
wednesday night. waves 2 feet or less.
winds and waves higher in and near thunderstorms.
$$
(2/3)
Latest Great Lakes Marine Forecast by KBUF
Issued 7/12/2025 4:02 AM America/New_York.
Valid through 7/12/2025 11:00 AM America/New_York.
fzus61 kbuf 120802
glflo
expires:202507121500;;304834
open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat jul 12 2025
for waters beyond five nautical miles of shore on lake ontario
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...a 29.7 inch low over the great lakes will track across
southeast ontario today then arrive across james bay tonight while
deepening to 29.3 inches. in the process, this system will push a
warm front across the lake, followed by a slow-moving trailing cold
front on sunday into sunday night. a 30.1 inch high over the ohio
valley will then build across the lower great lakes monday through
wednesday.
loz063>065-121500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt sat jul 12 2025
.today...south winds 5 to 10 knots becoming east. waves 1 foot or
less.
.tonight...southeast winds 5 to 15 knots becoming south 15 to
20 knots. a chance of showers and thunderstorms late. waves 1 to
3 feet.
.sunday...south winds 5 to 15 knots becoming southwest. showers
with a chance of thunderstorms. waves 1 to 3 feet.
.sunday night...southwest winds 5 to 10 knots becoming west.
showers with a chance of thunderstorms in the evening, then a
chance of showers overnight. waves 1 to 2 feet.
.monday...west winds 5 to 10 knots becoming southwest. waves
1 foot or less.
.tuesday...southwest winds 5 to 10 knots becoming south. waves
1 foot or less.
.wednesday...south winds 5 to 15 knots becoming southwest. a
chance of showers wednesday night. waves 2 feet or less.
winds and waves higher in and near thunderstorms.
$$
(3/3)
Latest Great Lakes Marine Forecast by KBUF
Issued 7/12/2025 4:02 AM America/New_York.
Valid through 7/12/2025 11:00 AM America/New_York.
fzus61 kbuf 120802
glfsl
expires:202507121500;;304832
forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 am edt sat jul 12 2025
slz022-024-121500-
saint lawrence river from cape vincent to saint regis
402 am edt sat jul 12 2025
.today...light and variable winds becoming south 5 to 10 knots. a
chance of showers and thunderstorms this afternoon.
.tonight...south winds 10 knots or less increasing to 10 to
15 knots. a chance of showers and thunderstorms early.
.sunday...south winds 5 to 10 knots becoming southwest. a chance
of showers and thunderstorms in the morning, then showers with
thunderstorms likely in the afternoon.
.sunday night...southwest winds 10 knots or less. showers with
thunderstorms likely in the evening, then showers likely
overnight.
.monday...southwest winds 10 knots or less. a chance of showers
during the day.
.tuesday...southwest winds less than 10 knots becoming south.
mainly clear.
.wednesday...south winds 10 knots or less becoming southwest. a
chance of showers wednesday night.
winds and waves higher in and near thunderstorms.
$$
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