####018003334####
FZUS61 KBUF 042006

GLFLO 



Open Lake Forecast for Lake Ontario

National Weather Service Buffalo NY

406 PM EDT Sat May 4 2024



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 remain over Hudson Bay, with a

cold front trailing this low crossing the lake Sunday night. A 

30.1 inch high will then build into the upper Great Lakes Sunday 

night and Monday before weakening and drifting to southern Quebec 

and New England Tuesday.



LOZ062-050315-

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

406 PM EDT Sat May 4 2024



.TONIGHT...Southeast winds 15 to 20 knots diminishing to 10 to

15 knots. A chance of showers early. Showers likely after

midnight, then periods of rain late. Waves 2 to 4 feet subsiding

to 1 to 3 feet. 

.SUNDAY...Southeast winds 5 to 15 knots. Periods of rain in the

morning, then showers likely in the afternoon. Waves 1 to 3 feet

subsiding to 1 foot or less. 

.SUNDAY NIGHT...Southeast winds 10 knots or less becoming west. A

chance of showers in the evening. Waves 2 feet or less. 

.MONDAY...West winds 5 to 10 knots becoming southwest. Waves

2 feet or less. 

.MONDAY NIGHT...Southwest winds 10 knots or less becoming

northwest. Waves 1 foot or less. 

.TUESDAY...North winds less than 10 knots becoming east 10 to

15 knots. Showers likely Tuesday night. Waves 2 feet or less. 

.WEDNESDAY...Southeast winds 5 to 10 knots. Showers likely during

the day, then a chance of showers Wednesday night. Waves 2 feet

or less. 

.THURSDAY...East winds 5 to 10 knots becoming northwest. Showers

likely. Waves 1 to 2 feet. 



$$



LOZ063>065-050315-

Lake Ontario open waters from Hamlin Beach to the Saint Lawrence

River-

406 PM EDT Sat May 4 2024



.TONIGHT...Southeast winds 15 to 20 knots. Showers likely after

midnight. Periods of rain late. Waves 2 to 4 feet subsiding to

1 to 3 feet. 

.SUNDAY...Southeast winds 15 to 20 knots. Periods of rain through

early afternoon, then showers likely late. Waves 2 to 4 feet

subsiding to 1 to 3 feet. 

.SUNDAY NIGHT...Southeast winds 15 to 20 knots becoming west

10 to 15 knots. A chance of showers. Waves 1 to 3 feet. 

.MONDAY...West winds 5 to 15 knots. Waves 2 feet or less. 

.MONDAY NIGHT...Southwest winds 10 knots or less. Waves 1 foot or

less. 

.TUESDAY...South winds 10 knots or less becoming east. Showers

likely Tuesday night. Waves 2 feet or less. 

.WEDNESDAY...Southeast winds 5 to 10 knots. Showers likely with a

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

and thunderstorms Wednesday night. Waves 2 feet or less. 

.THURSDAY...East winds 5 to 10 knots becoming southwest. Showers

likely. Waves 2 feet or less. 



Winds and waves higher in and near thunderstorms.



$$



LOZ061-050315-

MAFOR 0421/

ONTARIO WEST 1/2 11220 12310 13316 11306 11300. Waves 2 to 4 feet

subsiding to 1 to 3 feet tonight. Waves 1 to 3 feet Sunday. 



ONTARIO EAST 1/2 13310 11316 13326 11316. Waves 1 to 3 feet

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



$$

####018001131####
FZUS61 KBUF 042006

GLFSL 



Forecast for the Saint Lawrence River

including the Thousand Islands Region

National Weather Service Buffalo NY

406 PM EDT Sat May 4 2024



SLZ022-024-050315-

Saint Lawrence River from Cape Vincent to Saint Regis

406 PM EDT Sat May 4 2024



.TONIGHT...Southeast winds 10 knots or less becoming south. A

chance of showers after midnight. Showers likely late. 

.SUNDAY...South winds 5 to 15 knots. Periods of rain through

early afternoon, then showers likely late. 

.SUNDAY NIGHT...South winds 10 to 15 knots becoming light and

variable. Showers likely in the evening, then a chance of showers

overnight. 

.MONDAY...Northwest winds 10 knots or less becoming west. A

chance of showers in the morning. 

.MONDAY NIGHT...Southwest winds 5 to 10 knots becoming light and

variable. Becoming mainly clear. 

.TUESDAY...Light and variable winds becoming east 5 to 10 knots.

A chance of showers Tuesday night. 

.WEDNESDAY...Northeast winds 10 knots or less. Showers likely. 

.THURSDAY...Northeast winds 5 to 10 knots becoming southeast.

Showers likely. 



$$