####018003531####
FZUS61 KBUF 300225

GLFLO 



Open Lake Forecast for Lake Ontario

National Weather Service Buffalo NY

1025 PM EDT Mon Apr 29 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 track from upper Michigan tonight 

to Ontario Province on Tuesday. A cold front trailing from the low

will cross the lake on Tuesday, then a 29.9 inch high will slide 

across the lake Tuesday night 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. A cold

front will cross the Lake Saturday. 



LOZ062-300915-

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

1025 PM EDT Mon Apr 29 2024



.REST OF TONIGHT...East winds 15 to 20 knots diminishing to 10 to

15 knots. Showers likely, then showers likely with a chance of

thunderstorms late. Waves 3 to 5 feet subsiding to 2 to 3 feet. 

.TUESDAY...Northeast winds 10 knots or less becoming east.

Showers with a chance of thunderstorms through early afternoon,

then a chance of showers late. Waves 1 to 2 feet. 

.TUESDAY NIGHT...East winds 10 knots or less. A chance of showers

in the evening. Waves 1 foot or less. 

.WEDNESDAY...Southeast winds 10 knots or less. Waves 1 foot or

less. 

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

southwest. Waves 1 foot or less. 

.THURSDAY...West winds 10 knots or less becoming east. Waves

1 foot or less. 

.FRIDAY...East winds 5 to 10 knots becoming south. A chance of

showers. Waves 2 feet or less. 

.SATURDAY...South winds 5 to 10 knots. A chance of showers. Waves

1 to 2 feet. 



Winds and waves higher in and near thunderstorms.



$$



LOZ063>065-300915-

Lake Ontario open waters from Hamlin Beach to the Saint Lawrence

River-

1025 PM EDT Mon Apr 29 2024



.REST OF TONIGHT...East winds 10 to 15 knots becoming northeast.

A chance of showers late this evening, then showers likely after

midnight. Showers likely with a chance of thunderstorms late.

Waves 1 to 3 feet. 

.TUESDAY...Northeast winds 5 to 15 knots. Showers with a chance

of thunderstorms. Waves 2 feet or less. 

.TUESDAY NIGHT...Northeast winds 5 to 10 knots becoming north. A

chance of showers in the evening. Waves 1 foot or less. 

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

1 foot or less. 

.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots becoming south.

Waves 1 foot or less. 

.THURSDAY...Southwest 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 2 feet or less. 

.SATURDAY...South winds 5 to 15 knots. A chance of showers. Waves

1 to 2 feet. 



Winds and waves higher in and near thunderstorms.



$$



LOZ061-300915-

MAFOR 3003/

ONTARIO WEST 1/2 11210 11110 13106 11100 12200. A chance of

thunderstorms Tuesday. Waves 3 to 5 feet subsiding to 2 to 4 feet

overnight. Waves 2 feet or less Tuesday and Tuesday evening. 



ONTARIO EAST 1/2 12210 11110 11106 12806 12100. A chance of

thunderstorms Tuesday. Waves 1 to 3 feet overnight. Waves 2 feet

or less Tuesday and Tuesday evening. 



$$

####018001159####
FZUS61 KBUF 300225

GLFSL 



Forecast for the Saint Lawrence River

including the Thousand Islands Region

National Weather Service Buffalo NY

1025 PM EDT Mon Apr 29 2024



SLZ022-024-300915-

Saint Lawrence River from Cape Vincent to Saint Regis

1025 PM EDT Mon Apr 29 2024



.OVERNIGHT...East winds 10 to 15 knots becoming northeast

15 to 20 knots. Showers likely. Showers with a

chance of thunderstorms late. 

.TUESDAY...Northeast winds 15 to 20 knots diminishing to 5 to

15 knots. Showers with a chance of thunderstorms. 

.TUESDAY NIGHT...Northeast winds 10 knots or less. Showers likely

with a chance of thunderstorms in the evening. 

.WEDNESDAY...North winds less than 10 knots becoming northwest.

Mostly cloudy. 

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

south. Mostly cloudy. 

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

chance of showers. 

.FRIDAY...East winds 5 to 10 knots becoming southeast. A chance

of showers. 

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

chance of showers. 



Winds and waves higher in and near thunderstorms.



$$