FZUS61 KBUF 042003

GLFLO 



Open Lake Forecast for Lake Ontario

National Weather Service Buffalo NY

402 PM EDT Tue Aug 4 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 high pressure ridge averaging 30.0 inches exits slowly 

toward New England through this weekend. A cold front should 

approach Lake Ontario slowly from the northwest Thursday through 

this weekend.



LOZ062-050300-

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

403 PM EDT Tue Aug 4 2026



.TONIGHT...East winds 5 to 10 knots becoming south. Waves 1 foot

or less. 

.WEDNESDAY...South winds 10 knots or less becoming east. Waves

1 foot or less. 

.WEDNESDAY NIGHT...East winds 10 knots or less becoming

southwest. Waves 1 foot or less. 

.THURSDAY...Light and variable winds. A chance of showers. Waves

1 foot or less. 

.THURSDAY NIGHT...South winds less than 10 knots becoming west.

Waves 1 foot or less. 

.FRIDAY...Light and variable winds becoming southwest 5 to

10 knots. A chance of showers and thunderstorms. Waves 1 foot or

less. 

.SATURDAY...Southwest winds 5 to 15 knots becoming west. A chance

of showers and thunderstorms during the day, then a chance of

showers Saturday night. Waves 1 foot or less. 

.SUNDAY...West winds 5 to 15 knots becoming southwest. A chance

of showers and thunderstorms. Waves 1 to 2 feet. 



Winds and waves higher in and near thunderstorms.



$$



LOZ063>065-050300-

Lake Ontario open waters from Hamlin Beach to the Saint Lawrence

River-

403 PM EDT Tue Aug 4 2026



.TONIGHT...East winds 5 to 15 knots becoming south. Waves 1 foot

or less. 

.WEDNESDAY...South winds 5 to 15 knots becoming east. Waves

2 feet or less. 

.WEDNESDAY NIGHT...East winds 5 to 10 knots becoming south. A

chance of showers overnight. Waves 1 foot or less. 

.THURSDAY...South winds 5 to 10 knots becoming southwest. A

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

thunderstorms in the afternoon. Waves 1 foot or less. 

.THURSDAY NIGHT...South winds less than 10 knots becoming

southwest. A chance of showers and thunderstorms in the evening.

Waves 1 foot or less. 

.FRIDAY...West winds 10 knots or less becoming southwest. A

chance of showers and thunderstorms during the day, then showers

likely with a chance of thunderstorms Friday night. Waves 1 foot

or less. 

.SATURDAY...Southwest winds 5 to 15 knots. Showers likely with a

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

Saturday night. Waves 1 foot or less. 

.SUNDAY...West winds 5 to 15 knots becoming southwest. A chance

of showers. Waves 2 feet or less. 



Winds and waves higher in and near thunderstorms.



$$



LOZ061-050300-

MAFOR 0421/

ONTARIO WEST 1/2 12200 11300 13400 11100 11200. Waves 1 foot or

less. 



ONTARIO EAST 1/2 12200 11300 13410 11300 11200. Waves 2 feet or

less. 



$$