####018002923####
FZUS61 KBUF 150843

GLFLO 



Open Lake Forecast for Lake Ontario

National Weather Service Buffalo NY

443 AM EDT Mon Apr 15 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...An expansive 30.1 inch high centered over 

Manitoba/southwestern Hudson Bay today will strengthen as it 

builds southeast across the Great Lakes region through Tuesday. A 

large storm system will move from the central and northern Plains 

to the western Great Lakes Tuesday night and Wednesday. The 

weakening storm system will pass just to the north of the Lake 

Wednesday night and Thursday.



LOZ062-151515-

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

443 AM EDT Mon Apr 15 2024



.TODAY...West winds 10 to 15 knots. Waves 1 to 3 feet. 

.TONIGHT...West winds 10 to 15 knots. Waves 1 to 3 feet. 

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

1 foot or less. 

.TUESDAY NIGHT...Northwest winds 5 to 10 knots becoming east and

increasing to 15 to 25 knots overnight. Waves 2 feet or less

building to 3 to 5 feet. 

.WEDNESDAY...East winds to 30 knots diminishing to 15 to

20 knots. Showers. Waves 5 to 9 feet subsiding to 3 to 6 feet.

Waves occasionally around 11 feet. 

.THURSDAY...Southeast winds 15 to 20 knots becoming southwest

10 to 15 knots. Showers during the day, then a chance of showers

Thursday night. Waves 2 to 4 feet subsiding to 1 to 3 feet. 

.FRIDAY...Southwest winds 10 to 15 knots becoming west. A chance

of showers. Waves 1 to 3 feet. 



$$



LOZ063>065-151515-

Lake Ontario open waters from Hamlin Beach to the Saint Lawrence

River-

443 AM EDT Mon Apr 15 2024



.TODAY...West winds 10 to 15 knots increasing to 15 to 20 knots.

Waves 2 feet or less building to 2 to 4 feet. 

.TONIGHT...West winds 10 to 15 knots. Waves 2 to 4 feet subsiding

to 1 to 3 feet. 

.TUESDAY...West winds 5 to 10 knots. Waves 1 to 2 feet. 

.TUESDAY NIGHT...Southwest winds 5 to 15 knots becoming northeast

15 to 20 knots. Waves 1 to 3 feet. 

.WEDNESDAY...Northeast winds 15 to 20 knots becoming east.

Showers. Waves 3 to 6 feet. 

.THURSDAY...Southeast winds 15 to 25 knots becoming south and

diminishing to 10 to 15 knots. Showers. Waves 2 to 4 feet

subsiding to 1 to 3 feet. 

.FRIDAY...Southwest winds 10 to 15 knots becoming west. A chance

of showers. Waves 1 to 3 feet. 



$$



LOZ061-151515-

MAFOR 1509/

ONTARIO WEST 1/2 11600 14610 11610 12600. Waves 1 to 3 feet

building to 2 to 4 feet today. Waves 1 to 3 feet tonight. 



ONTARIO EAST 1/2 11600 15610 11600. Waves 2 feet or less building

to 2 to 4 feet today. Waves 2 to 4 feet subsiding to 1 to 3 feet

tonight. 



$$

####018000917####
FZUS61 KBUF 150843

GLFSL 



Forecast for the Saint Lawrence River

including the Thousand Islands Region

National Weather Service Buffalo NY

443 AM EDT Mon Apr 15 2024



SLZ022-024-151515-

Saint Lawrence River from Cape Vincent to Saint Regis

443 AM EDT Mon Apr 15 2024



.TODAY...West winds 10 knots or less becoming southwest. Patchy

fog early. A chance of showers early. A chance of showers this

afternoon. 

.TONIGHT...Southwest winds 10 knots or less becoming west. A

chance of rain showers early. 

.TUESDAY...West winds 5 to 10 knots. Sunny.

.TUESDAY NIGHT...Northwest winds 10 knots or less becoming

northeast. Mainly clear. 

.WEDNESDAY...Northeast winds 10 to 15 knots becoming east. A

chance of rain showers Wednesday night. 

.THURSDAY...East winds 10 to 15 knots becoming south. Showers

likely. 

.FRIDAY...Southwest winds 5 to 10 knots. Showers likely. 



$$