FZUS61 KBUF 262002

GLFLO 



Open Lake Forecast for Lake Ontario

National Weather Service Buffalo NY

402 PM EDT Thu Jun 26 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 30.3 inch high will build from Quebec today to 

northern New England Friday. A frontal zone will remain stalled 

south of the lake through tonight before moving back north across 

the lake as a warm front Friday afternoon. A 29.7 inch low will then 

move from the upper Great Lakes Friday to southern Quebec Saturday, 

then to the Canadian Maritimes by late Sunday. A 30.0 inch high will 

move over the Lake Sunday through Sunday night. A 29.5 inch low will 

be near James Bay Monday.



LOZ062-270300-

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

402 PM EDT Thu Jun 26 2025



.TONIGHT...East winds 15 to 20 knots. Waves 3 to 6 feet. 

.FRIDAY...East winds 10 to 15 knots. A chance of showers early,

then showers likely with a chance of thunderstorms from late

morning on. Waves 2 to 4 feet. 

.FRIDAY NIGHT...Southeast winds 10 to 15 knots becoming

southwest. Showers with a chance of thunderstorms. Waves 1 to

2 feet. 

.SATURDAY...Southwest winds 10 to 15 knots becoming west. Showers

with a chance of thunderstorms in the morning, then a chance of

showers in the afternoon. Waves 1 to 2 feet. 

.SATURDAY NIGHT...West winds 5 to 10 knots. Waves 1 to 2 feet. 

.SUNDAY...West winds 5 to 10 knots becoming south. Waves 1 foot

or less. 

.MONDAY...South winds 5 to 10 knots becoming southwest. A chance

of showers and thunderstorms during the day, then showers likely

with a chance of thunderstorms Monday night. Waves 2 feet or

less. 

.TUESDAY...West winds 10 to 15 knots. Showers likely with a

chance of thunderstorms during the day. Waves 1 to 3 feet. 



Winds and waves higher in and near thunderstorms.



$$



LOZ063>065-270300-

Lake Ontario open waters from Hamlin Beach to the Saint Lawrence

River-

402 PM EDT Thu Jun 26 2025



.TONIGHT...Northeast winds 15 to 20 knots becoming east 10 to

15 knots. A chance of showers. Waves 3 to 5 feet subsiding to

1 to 3 feet. 

.FRIDAY...East winds 10 to 15 knots becoming southeast. A chance

of showers in the morning, then showers with a chance of

thunderstorms in the afternoon. Waves 1 to 3 feet. 

.FRIDAY NIGHT...Southeast winds 15 to 20 knots becoming south.

Showers with a chance of thunderstorms. Waves 1 to 3 feet

building to 3 to 5 feet. 

.SATURDAY...South winds 15 to 20 knots becoming west 10 to

15 knots. Showers with a chance of thunderstorms. Waves 2 to

4 feet subsiding to 1 to 3 feet. 

.SATURDAY NIGHT...West winds 5 to 15 knots. A chance of showers

in the evening. Waves 1 to 2 feet. 

.SUNDAY...West winds 5 to 10 knots becoming south. Waves 2 feet

or less. 

.MONDAY...South winds 5 to 10 knots becoming southwest. A chance

of showers and thunderstorms during the day, then showers likely

with a chance of thunderstorms Monday night. Waves 2 feet or

less. 

.TUESDAY...Southwest winds 10 to 15 knots becoming west. Showers

likely with a chance of thunderstorms during the day, then a

chance of showers Tuesday night. Waves 1 to 3 feet. 



Winds and waves higher in and near thunderstorms.



$$



LOZ061-270300-

MAFOR 2621/

ONTARIO WEST 1/2 11130 11220 14210 11216 11206. A chance of

thunderstorms Friday afternoon. Waves 3 to 6 feet tonight. Waves

2 to 4 feet Friday. 



ONTARIO EAST 1/2 12120 14210 11210 11316. A chance of

thunderstorms Friday afternoon. Waves 3 to 5 feet subsiding to 1

to 3 feet tonight. Waves 1 to 3 feet Friday. 



$$

