####018002930####
FZUS61 KBUF 010117

GLFLO 



Open Lake Forecast for Lake Ontario

National Weather Service Buffalo NY

917 PM EDT Tue Apr 30 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 29.9 inch high will slide across the lake tonight 

and Wednesday. A 29.6 inch low will then develop across the 

central Plains on Thursday, deepening to 29.4 inches near western 

Lake Superior on Friday. A warm front will extend eastward from 

this low towards the lake Friday. Low pressure will pass by to the

north, with a cold front crossing the lake on Saturday, and another

cold front on Sunday.



LOZ062-010915-

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

917 PM EDT Tue Apr 30 2024



.REST OF TONIGHT...Northeast winds 5 to 10 knots becoming light

and variable. A chance of showers late this evening. Patchy fog

late. Waves 1 foot or less. 

.WEDNESDAY...West winds 10 knots or less becoming east 10 to

15 knots. Patchy fog in the morning. Waves 2 feet or less. 

.WEDNESDAY NIGHT...East winds 5 to 15 knots becoming west. Waves

1 to 2 feet. 

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

.THURSDAY NIGHT...Southeast winds 10 knots or less becoming east.

Waves 1 foot or less. 

.FRIDAY...East winds 5 to 15 knots becoming southeast. A chance

of showers. Waves 1 to 3 feet. 

.SATURDAY...Southeast winds 5 to 10 knots. Showers likely. Waves

2 feet or less. 

.SUNDAY...Southeast winds 5 to 10 knots becoming west. A chance

of showers during the day. Waves 1 foot or less. 



$$



LOZ063>065-010915-

Lake Ontario open waters from Hamlin Beach to the Saint Lawrence

River-

917 PM EDT Tue Apr 30 2024



.REST OF TONIGHT...Northeast winds 5 to 10 knots. A chance of

showers. Patchy fog late. Waves 1 foot or less. 

.WEDNESDAY...Northwest winds 10 knots or less becoming southeast.

Patchy fog early. Waves 1 foot or less. 

.WEDNESDAY NIGHT...East winds 5 to 15 knots becoming southwest.

Waves 2 feet or less. 

.THURSDAY...West winds 5 to 15 knots. Waves 1 to 3 feet. 

.THURSDAY NIGHT...Southwest winds 10 knots or less becoming east.

Waves 2 feet or less. 

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

of showers Friday night. Waves 1 to 3 feet. 

.SATURDAY...Southeast winds 10 to 15 knots. Showers likely. Waves

1 to 2 feet. 

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

of showers during the day. Waves 2 feet or less. 



$$



LOZ061-010915-

MAFOR 0103/

ONTARIO WEST 1/2 11100 11700 11600 11500 11400 11200 11210 11300.

Waves 2 feet or less. 



ONTARIO EAST 1/2 12100 11800 11600 11500 11300 11200 11300. Waves

2 feet or less. 



$$

####018000960####
FZUS61 KBUF 010117

GLFSL 



Forecast for the Saint Lawrence River

including the Thousand Islands Region

National Weather Service Buffalo NY

917 PM EDT Tue Apr 30 2024



SLZ022-024-010915-

Saint Lawrence River from Cape Vincent to Saint Regis

917 PM EDT Tue Apr 30 2024



.OVERNIGHT...Northeast winds 10 knots or less. Cloudy.

.WEDNESDAY...Light and variable winds. Mostly cloudy through

early afternoon, then becoming partly sunny. 

.WEDNESDAY NIGHT...Southeast winds less than 10 knots becoming

south. A chance of showers. 

.THURSDAY...West winds 10 knots or less becoming northwest. A

chance of showers. 

.THURSDAY NIGHT...Northeast winds less than 10 knots. Mostly

cloudy. 

.FRIDAY...East winds 5 to 10 knots. A chance of showers Friday

night. 

.SATURDAY...Southeast winds 5 to 10 knots becoming south. Showers

likely. 

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

of showers. 



$$