FZUS61 KBUF 060241

GLFLO 



Open Lake Forecast for Lake Ontario

National Weather Service Buffalo NY

1041 PM EDT Sat Apr 5 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 29.8 inch low will move to the northeast across 

Pennsylvania tonight. A 30.1 inch high over the upper Great Lakes

will build across the lower Great Lakes Sunday and Sunday night,

before a 29.5 inch low slowly moves eastward, just north of the 

Lake through Monday and Monday night. A 30.2 inch high will build 

across the Lake Tuesday through Wednesday.



LOZ062-060915-

Lake Ontario open waters from the Niagara River to Hamlin Beach-

1041 PM EDT Sat Apr 5 2025



.REST OF TONIGHT...West winds 10 to 15 knots becoming northwest

15 to 20 knots. A chance of rain showers after midnight. Waves

1 to 3 feet. 

.SUNDAY...Northwest winds 15 to 20 knots becoming west 10 to

15 knots. Waves 3 to 5 feet subsiding to 2 to 4 feet. 

.SUNDAY NIGHT...Northwest winds 10 to 15 knots becoming 

northeast. Waves 1 to 3 feet subsiding to 1 foot or less. 

.MONDAY...Southwest winds 10 to 15 knots becoming north 15 to

20 knots. A chance of rain and snow showers in the afternoon.

Waves 1 to 3 feet. 

.MONDAY NIGHT...Northwest winds 15 to 25 knots. A chance of rain

and snow showers in the evening, then a chance of snow showers

overnight. Waves 2 to 4 feet building to 4 to 7 feet. Waves

occasionally around 9 feet. 

.TUESDAY...Northwest winds 15 to 25 knots becoming west. A chance

of snow showers during the day. Waves 5 to 8 feet subsiding to

3 to 6 feet. Waves occasionally around 10 feet. 

.WEDNESDAY...West winds 10 to 15 knots becoming south. Waves 2 to

4 feet subsiding to 1 to 3 feet. 

.THURSDAY...Southeast winds 10 to 15 knots becoming east. A

chance of rain. Waves 1 to 3 feet. 



$$



LOZ063>065-060915-

Lake Ontario open waters from Hamlin Beach to the Saint Lawrence

River-

1041 PM EDT Sat Apr 5 2025



.REST OF TONIGHT...West winds 10 to 15 knots increasing to 15 to

20 knots. Patchy fog late this evening. A chance of rain showers,

then rain showers likely late. Waves 2 to 4 feet. 

.SUNDAY...West winds 15 to 20 knots. Waves 3 to 6 feet. 

.SUNDAY NIGHT...West winds 15 to 20 knots becoming north 5 to

15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet. 

.MONDAY...North winds 5 to 10 knots becoming northwest. Waves

1 foot or less. 

.MONDAY NIGHT...Northwest winds 10 to 15 knots becoming west and

increasing to 15 to 25 knots. Rain and snow showers likely in the

evening, then snow showers likely overnight. Waves 1 to 2 feet

building to 5 to 8 feet. Waves occasionally around 10 feet. 

.TUESDAY...Northwest winds to 30 knots diminishing to 15 to

25 knots. Snow showers likely during the day, then a chance of

snow showers Tuesday night. Waves 6 to 10 feet subsiding to 5 to

8 feet. Waves occasionally around 13 feet. 

.WEDNESDAY...West winds 15 to 20 knots becoming south 10 to

15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet. 

.THURSDAY...Southeast winds 10 to 15 knots. A chance of rain.

Waves 1 to 3 feet. 



$$



LOZ061-060915-

MAFOR 0603/

ONTARIO WEST 1/2 11610 11620 13720 11620 11610 11710. Waves 1 to

3 feet building to 2 to 4 feet overnight. Waves 3 to 6 feet

subsiding to 2 to 4 feet Sunday. Waves 1 to 3 feet Sunday

evening. 



ONTARIO EAST 1/2 11610 15620 11610. A chance of rain showers

overnight. Waves 2 to 4 feet overnight. Waves 3 to 6 feet Sunday.

Waves 3 to 5 feet subsiding to 2 to 4 feet Sunday evening. 



$$