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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt fri jun 13 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 frontal boundary will remain stalled south of the 
lower great lakes tonight through monday. meanwhile, a 30.3 inch 
high will build from northern ontario province tonight, to southern 
quebec saturday, then into the canadian maritimes by late sunday. a 
weak 29.9 inch low will move from the ohio valley sunday to the mid 
atlantic monday, then another weak 29.8 inch low will slide east 
across the upper great lakes tuesday. another 29.5 inch may move 
across the upper great lakes wednesday.


loz062-140900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt fri jun 13 2025

.overnight...east winds 10 to 15 knots becoming northeast.
a chance of showers. waves 1 to 3 feet. 
.saturday...northeast winds 15 to 20 knots becoming east 10 to
15 knots. waves 2 to 4 feet. 
.saturday night...east winds 5 to 15 knots becoming northeast.
waves 1 to 3 feet. 
.sunday...northeast winds 10 to 15 knots becoming east. waves
1 to 2 feet. 
.sunday night...east winds 5 to 10 knots. waves 2 feet or less. 
.monday...east winds 5 to 10 knots becoming south. waves 1 foot
or less. 
.tuesday...south winds 5 to 10 knots becoming southwest.
scattered showers. waves 2 feet or less. 
.wednesday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers and thunderstorms during the day,
then showers likely with a chance of thunderstorms wednesday
night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 140202
glflo 
expires:202506140900;;200219

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt fri jun 13 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 frontal boundary will remain stalled south of the 
lower great lakes tonight through monday. meanwhile, a 30.3 inch 
high will build from northern ontario province tonight, to southern 
quebec saturday, then into the canadian maritimes by late sunday. a 
weak 29.9 inch low will move from the ohio valley sunday to the mid 
atlantic monday, then another weak 29.8 inch low will slide east 
across the upper great lakes tuesday. another 29.5 inch may move 
across the upper great lakes wednesday.


loz063>065-140900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt fri jun 13 2025

.overnight...northeast winds 10 to 15 knots. a chance of
showers. waves 1 to 3 feet. 
.saturday...northeast winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.saturday night...northeast winds 5 to 10 knots becoming east.
waves 2 feet or less. 
.sunday...east winds 5 to 10 knots. waves 2 feet or less. 
.sunday night...east winds 5 to 10 knots becoming southeast.
waves 1 foot or less. 
.monday...southeast winds 5 to 10 knots becoming south. waves
1 foot or less. 
.tuesday...south winds 5 to 15 knots. a chance of showers. waves
2 feet or less. 
.wednesday...southwest winds 10 to 15 knots. a chance of showers
and thunderstorms during the day, then showers likely with a
chance of thunderstorms wednesday night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

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expires:202506140900;;200221

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1002 pm edt fri jun 13 2025


slz022-024-140900-
saint lawrence river from cape vincent to saint regis
1002 pm edt fri jun 13 2025

.overnight...northeast winds 10 knots or less. a chance of
showers. 
.saturday...northeast winds 5 to 10 knots. becoming mostly sunny.
.saturday night...northeast winds 5 to 10 knots becoming light
and variable. partly to mostly cloudy. 
.sunday...light and variable winds. mostly sunny. 
.sunday night...light and variable winds. partly cloudy. 
.monday...southeast winds less than 10 knots becoming south.
mostly cloudy. 
.tuesday...southwest winds 10 knots or less becoming south.
scattered showers and thunderstorms. 
.wednesday...southwest winds 5 to 10 knots becoming south.
showers likely with a chance of thunderstorms. 

winds and waves higher in and near thunderstorms.

$$