####018003412####
FZUS61 KBUF 272009

GLFLO 



Open Lake Forecast for Lake Ontario

National Weather Service Buffalo NY

409 PM EDT Sat Apr 27 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 warm front will move east across the lake this

evening. A 29.6 inch low will track from the central Plains 

Sunday to Lake Superior by Monday evening...then to Ontario 

Province on Tuesday. A cold front trailing from the low will cross

the lake on Tuesday...with a 29.9 inch bubble of high pressure 

then forecast to slide across the lake Tuesday night and 

Wednesday.



LOZ062-280315-

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

409 PM EDT Sat Apr 27 2024



.TONIGHT...Southeast winds 10 to 15 knots becoming southwest. A

chance of showers early. Waves 1 to 3 feet. 

.SUNDAY...Southwest winds 10 to 15 knots. A chance of showers

from late morning on. Waves 1 to 3 feet. 

.SUNDAY NIGHT...West winds 5 to 15 knots becoming northeast. A

chance of showers. Waves 2 feet or less. 

.MONDAY...East winds 10 to 15 knots increasing to 15 to 20 knots.

A chance of showers in the morning. Waves 2 to 4 feet. 

.MONDAY NIGHT...East winds 15 to 20 knots diminishing to 10 to

15 knots. Showers likely. Waves 2 to 4 feet. 

.TUESDAY...East winds 5 to 10 knots becoming north. Showers

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

Waves 2 feet or less. 

.WEDNESDAY...South winds 5 to 10 knots becoming southwest. Waves

1 foot or less. 

.THURSDAY...Southwest winds 5 to 10 knots becoming southeast. A

chance of showers. Waves 1 foot or less. 



$$



LOZ063>065-280315-

Lake Ontario open waters from Hamlin Beach to the Saint Lawrence

River-

409 PM EDT Sat Apr 27 2024



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

15 knots. Showers early, then a chance of showers. Waves 3 to

5 feet subsiding to 1 to 3 feet. 

.SUNDAY...South winds 10 to 15 knots becoming southwest. A chance

of showers from late morning on. Waves 1 to 3 feet. 

.SUNDAY NIGHT...West winds 5 to 15 knots becoming northeast. A

chance of showers. Waves 1 to 3 feet. 

.MONDAY...Northeast winds 15 to 20 knots diminishing to 10 to

15 knots. A chance of showers in the morning. Waves 2 to 4 feet

subsiding to 1 to 3 feet. 

.MONDAY NIGHT...Northeast winds 5 to 10 knots becoming east. A

chance of showers in the evening, then showers likely overnight.

Waves 2 feet or less. 

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

likely with a chance of thunderstorms. Waves 2 feet or less. 

.WEDNESDAY...Northwest winds 5 to 10 knots becoming southwest.

Waves 1 foot or less. 

.THURSDAY...Southwest winds 5 to 10 knots becoming southeast. A

chance of showers. Waves 2 feet or less. 



Winds and waves higher in and near thunderstorms.



$$



LOZ061-280315-

MAFOR 2721/

ONTARIO WEST 1/2 12310 12410 14510. A chance of showers Sunday.

Waves 1 to 3 feet building to 2 to 4 feet, then subsiding to 1 to

3 feet tonight. Waves 1 to 3 feet Sunday. 



ONTARIO EAST 1/2 11426 11420 14410 12510. Waves 3 to 5 feet

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



$$

####018001209####
FZUS61 KBUF 272009

GLFSL 



Forecast for the Saint Lawrence River

including the Thousand Islands Region

National Weather Service Buffalo NY

409 PM EDT Sat Apr 27 2024



SLZ022-024-280315-

Saint Lawrence River from Cape Vincent to Saint Regis

409 PM EDT Sat Apr 27 2024



.TONIGHT...South winds 5 to 15 knots. Showers this evening, then

a chance of showers after midnight. 

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

of showers through early afternoon, then showers likely with a

chance of thunderstorms late. 

.SUNDAY NIGHT...West winds 5 to 10 knots becoming north. A chance

of showers. 

.MONDAY...Northeast winds 5 to 10 knots. Mostly cloudy in the

morning, then becoming partly sunny. 

.MONDAY NIGHT...Northeast winds 5 to 10 knots. A chance of

showers in the evening, then showers likely overnight. 

.TUESDAY...Northeast winds 10 knots or less. Showers with a

chance of thunderstorms. 

.WEDNESDAY...North winds 10 knots or less becoming south. Partly

to mostly cloudy. 

.THURSDAY...Southwest winds 5 to 10 knots becoming south. A

chance of showers Thursday night. 



Winds and waves higher in and near thunderstorms.



$$