fzus61 kbuf 022010
glflo 
expires:202604030300;;722899

open lake forecast for lake ontario
national weather service buffalo ny
409 pm edt thu apr 2 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 29.6 inch low will move across the upper great lakes 
tonight and to southern quebec friday afternoon, while lifting a 
warm front northward across the lake tonight, followed by a weak 
trailing cold front friday afternoon. a 29.4 inch surface low will 
track through the central great lakes saturday, then into quebec 
saturday night and sunday, while dragging a strong cold front across 
the lake saturday night, with a secondary cold front then following 
sunday night and monday. a 30.5 inch high will then build across the 
great lakes tuesday and tuesday night, before sliding east and off 
the new england coast wednesday.


loz062-030300-
lake ontario open waters from the niagara river to hamlin beach-
409 pm edt thu apr 2 2026

.tonight...east winds 15 to 25 knots becoming south. a chance of
rain showers early, then a chance of rain showers and
thunderstorms. rain showers likely late. waves 4 to 7 feet
subsiding to 3 to 5 feet. waves occasionally around 9 feet. 
.friday...southwest winds 15 to 25 knots becoming west. showers
likely early. waves 3 to 6 feet. 
.friday night...west winds 15 to 20 knots becoming northeast 5 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.saturday...east winds 10 to 15 knots increasing to 15 to
20 knots. a chance of rain showers in the morning, then rain
showers in the afternoon. waves 1 to 2 feet building to 3 to
5 feet. 
.saturday night...east winds 10 to 15 knots becoming southwest
15 to 20 knots. showers. waves 2 to 4 feet. 
.sunday...west winds 15 to 25 knots. rain showers during the day.
waves 5 to 8 feet. waves occasionally around 10 feet. 
.monday...west winds 15 to 20 knots becoming northwest. a chance
of snow showers monday night. waves 4 to 7 feet subsiding to 1 to
3 feet. waves occasionally around 9 feet. 
.tuesday...north winds 15 to 20 knots. a chance of snow showers
during the day. waves 3 to 5 feet subsiding to 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 022010
glflo 
expires:202604030300;;722900

open lake forecast for lake ontario
national weather service buffalo ny
409 pm edt thu apr 2 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 29.6 inch low will move across the upper great lakes 
tonight and to southern quebec friday afternoon, while lifting a 
warm front northward across the lake tonight, followed by a weak 
trailing cold front friday afternoon. a 29.4 inch surface low will 
track through the central great lakes saturday, then into quebec 
saturday night and sunday, while dragging a strong cold front across 
the lake saturday night, with a secondary cold front then following 
sunday night and monday. a 30.5 inch high will then build across the 
great lakes tuesday and tuesday night, before sliding east and off 
the new england coast wednesday.


loz063>065-030300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
409 pm edt thu apr 2 2026

.tonight...east winds 15 to 20 knots becoming south and
increasing to 30 knots. a chance of showers early, then a chance
of showers and thunderstorms late this evening. showers likely
with a chance of thunderstorms after midnight. waves 3 to 6 feet
building to 5 to 8 feet. waves occasionally around 10 feet. 
.friday...south winds to 30 knots becoming southwest and
diminishing to 15 to 20 knots. showers likely with a chance of
thunderstorms early, then a chance of showers late in the
morning. waves 5 to 8 feet subsiding to 3 to 6 feet. waves
occasionally around 10 feet. 
.friday night...west winds 15 to 20 knots becoming north 5 to
15 knots. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.saturday...northeast winds 10 to 15 knots becoming east. a
chance of rain showers in the morning, then rain showers likely
in the afternoon. waves 1 to 3 feet. 
.saturday night...southeast winds 15 to 20 knots becoming
southwest and increasing to 30 knots. showers with a chance of
thunderstorms in the evening, then showers overnight. waves 1 to
3 feet building to 3 to 6 feet. 
.sunday...west winds 15 to 20 knots increasing to 30 knots. rain
showers during the day, then a chance of snow showers sunday
night. waves 5 to 8 feet building to 7 to 10 feet. waves
occasionally around 13 feet. 
.monday...west winds 15 to 25 knots becoming northwest 15 to
20 knots. a chance of snow showers. waves 6 to 9 feet subsiding
to 2 to 4 feet. waves occasionally around 11 feet. 
.tuesday...north winds 15 to 20 knots. a chance of snow showers
during the day. waves 3 to 5 feet subsiding to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
410 pm edt thu apr 2 2026


slz022-024-030300-
saint lawrence river from cape vincent to saint regis
410 pm edt thu apr 2 2026

.tonight...east winds 5 to 15 knots becoming south 15 to
20 knots. rain showers. 
.friday...south winds 15 to 20 knots becoming southwest. showers
early, then showers likely late in the morning. a chance of
showers early in the afternoon. 
.friday night...west winds 15 to 20 knots becoming north and
diminishing to less than 10 knots overnight. partly to mostly
cloudy. 
.saturday...northeast winds 5 to 10 knots. rain showers likely in
the afternoon. 
.saturday night...east winds 5 to 15 knots becoming south 15 to
20 knots. showers.
.sunday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. rain showers during the day, then a chance of snow
showers sunday night. 
.monday...west winds 5 to 10 knots becoming northwest. a chance
of snow showers during the day. 
.tuesday...north winds 10 knots or less becoming northwest.
mostly cloudy, then clearing. 

$$