FZUS61 KBUF 261402

GLFLO 



Open Lake Forecast for Lake Ontario

National Weather Service Buffalo NY

1002 AM 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.



LOZ062-262100-

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

1002 AM EDT Thu Jun 26 2025



.REST OF TODAY...East winds 15 to 20 knots. Showers likely with a

chance of thunderstorms late this morning, then a chance of

showers early this afternoon. Waves 3 to 5 feet. 

.TONIGHT...Northeast winds 15 to 20 knots becoming east. A chance

of showers late. Waves 3 to 5 feet. 

.FRIDAY...East winds 10 to 15 knots. Showers likely with a chance

of thunderstorms. Waves 2 to 4 feet subsiding to 1 to 2 feet. 

.FRIDAY NIGHT...Southeast winds around 10 knots becoming

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

2 feet. 

.SATURDAY...West winds 5 to 10 knots becoming northwest. Showers

likely during the day, then a chance of showers Saturday night.

Waves 2 feet or less. 

.SUNDAY...West winds 10 knots or less becoming south. Waves

1 foot or less. 

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

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

thunderstorms Monday night. Waves 2 feet or less. 



Winds and waves higher in and near thunderstorms.



$$



LOZ063>065-262100-

Lake Ontario open waters from Hamlin Beach to the Saint Lawrence

River-

1002 AM EDT Thu Jun 26 2025



.REST OF TODAY...Northeast winds 15 to 20 knots. Showers with a

chance of thunderstorms late this morning, then showers likely

with a chance of thunderstorms early this afternoon. A chance of

showers late. Waves 2 to 4 feet building to 3 to 5 feet. 

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

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

.FRIDAY...East winds 10 to 15 knots becoming southeast. Showers

likely in the morning, then showers with a chance of

thunderstorms in the afternoon. Waves 2 to 4 feet subsiding to

1 to 3 feet. 

.FRIDAY NIGHT...South winds 10 to 15 knots increasing to 15 to

20 knots. Showers with a chance of thunderstorms. Waves 1 to

3 feet. 

.SATURDAY...Southwest winds 5 to 15 knots becoming west. Showers

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

showers Saturday night. Waves 1 to 3 feet. 

.SUNDAY...West winds 10 knots or less becoming south. Waves

1 foot or less. 

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

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

thunderstorms Monday night. Waves 2 feet or less. 



Winds and waves higher in and near thunderstorms.



$$



LOZ061-262100-

MAFOR 2615/

ONTARIO WEST 1/2 11220 13120 12220 11210 11216. Waves 3 to 5 feet

this afternoon and tonight. Waves 2 to 4 feet Friday morning. 



ONTARIO EAST 1/2 11126 13120 11220 12210 11216. A chance of

thunderstorms late this morning. Waves 2 to 4 feet this

afternoon. Waves 3 to 5 feet subsiding to 2 to 4 feet tonight.

Waves 2 to 4 feet subsiding to 1 to 3 feet Friday morning. 



$$

