####018000859####
FZUS61 KBUF 161429

GLFSL 



Forecast for the Saint Lawrence River

including the Thousand Islands Region

National Weather Service Buffalo NY

1029 AM EDT Tue Apr 16 2024



SLZ022-024-162115-

Saint Lawrence River from Cape Vincent to Saint Regis

1029 AM EDT Tue Apr 16 2024



.THIS AFTERNOON...Northwest winds 5 to 10 knots. Mostly sunny. 

.TONIGHT...Northwest winds 10 knots or less becoming northeast.

Becoming mainly clear. 

.WEDNESDAY...Northeast winds 5 to 10 knots. Sunny in the morning,

then becoming partly sunny. 

.WEDNESDAY NIGHT...Northeast winds 5 to 15 knots becoming east. A

chance of showers. 

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

.FRIDAY...South winds 10 to 15 knots becoming southwest. Showers

likely. 

.SATURDAY...West winds 10 to 15 knots. A chance of rain showers. 



$$

####018003731####
FZUS61 KBUF 161430

GLFLO 



Open Lake Forecast for Lake Ontario

National Weather Service Buffalo NY

1030 AM EDT Tue Apr 16 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 30.2 inch high will build southeast across the 

eastern Great Lakes region today. Meanwhile, a large storm system 

will move from the northern Plains to the upper Mississippi 

Valley tonight, before shifting east into the Great Lakes 

Wednesday. The weakening storm system will pass to the northwest 

of the lake Wednesday night and Thursday sending a cold front 

across the lake Wednesday night. The next storm system will then 

slowly cross northern Ontario and northern Quebec Friday and 

Saturday sending a secondary cold front across the Lake Friday 

night, while expansive high pressure moves from the Canadian 

Rockies to the central Plains.



LOZ062-162115-

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

1030 AM EDT Tue Apr 16 2024



.THIS AFTERNOON...Northwest winds 5 to 10 knots becoming

southwest. Waves 1 foot or less. 

.TONIGHT...Northwest winds less than 10 knots becoming east and

increasing to 15 to 25 knots after midnight. Waves 2 feet or less

building to 3 to 5 feet. 

.WEDNESDAY...East winds to 30 knots. Showers. Waves 4 to 7 feet

building to 6 to 10 feet. Waves occasionally around 13 feet. 

.WEDNESDAY NIGHT...East winds to 30 knots becoming southeast and

diminishing to 15 to 20 knots. Showers. Waves 6 to 9 feet

subsiding to 3 to 6 feet. Waves occasionally around 11 feet. 

.THURSDAY...South winds 5 to 15 knots becoming southeast. Showers

during the day, then a chance of showers Thursday night. Waves

2 to 4 feet subsiding to 2 feet or less. 

.FRIDAY...South winds 10 to 15 knots becoming west. Showers

likely. Waves 1 to 3 feet. 

.SATURDAY...West winds 15 to 20 knots becoming northwest 10 to

15 knots. Waves 2 to 4 feet. 



$$



LOZ063>065-162115-

Lake Ontario open waters from Hamlin Beach to the Saint Lawrence

River-

1030 AM EDT Tue Apr 16 2024



.THIS AFTERNOON...Northwest winds 5 to 10 knots becoming west.

Waves 1 foot or less. 

.TONIGHT...West winds 10 knots or less becoming northeast and

increasing to 15 to 20 knots after midnight. Waves 1 foot or less

building to 2 to 4 feet. 

.WEDNESDAY...Northeast winds 15 to 25 knots becoming east. Rain

showers in the afternoon. Waves 3 to 6 feet. 

.WEDNESDAY NIGHT...East winds 15 to 20 knots becoming southeast.

Showers. Waves 3 to 6 feet. 

.THURSDAY...Southeast winds 15 to 25 knots. Showers during the

day, then a chance of showers Thursday night. Waves 3 to 5 feet

subsiding to 2 to 4 feet. 

.FRIDAY...South winds 15 to 25 knots becoming west and

diminishing to 10 to 15 knots. Showers likely. Waves 3 to 5 feet

subsiding to 1 to 3 feet. 

.SATURDAY...West winds 15 to 20 knots diminishing to 10 to

15 knots. A chance of rain showers. Waves 2 to 4 feet building to

3 to 5 feet, then subsiding to 2 to 4 feet. 



$$



LOZ061-162115-

MAFOR 1615/

ONTARIO WEST 1/2 11600 11500 11600 11800 11110 11220 11230 11240.

Waves 1 foot or less this afternoon. Waves 2 feet or less

building to 3 to 5 feet tonight. Waves 5 to 8 feet, and

occasionally around 10 feet Wednesday morning. 



ONTARIO EAST 1/2 11700 13600 11100 11110 12120. Waves 1 foot or

less this afternoon. Waves 1 foot or less building to 1 to 3 feet

tonight. Waves 2 to 4 feet building to 3 to 5 feet Wednesday

morning. 



$$