####018003220#### FZUS61 KBUF 210806 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 406 AM EDT Sun Apr 21 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 30.5 inch high over the central this morning will continue to push south to the lower Mississippi Valley by later today. The high will weaken some to 30.2 as it slides east into the Ohio Valley by late Monday and ridges over the Lake. This high will slip to the east Tuesday, while a 29.5 inch surface low deepens across the western Great Lakes, with a warm front extending towards the Lake Tuesday night. The 29.7 inch low will cross the Lake late Tuesday night and Wednesday. A 30.3 inch high will then build across the Lake Wednesday night and Thursday. LOZ062-211515- Lake Ontario open waters from the Niagara River to Hamlin Beach- 406 AM EDT Sun Apr 21 2024 .TODAY...West winds 10 to 15 knots becoming southwest 15 to 20 knots. Waves 1 to 3 feet building to 3 to 5 feet. .TONIGHT...West winds 15 to 20 knots becoming northwest 10 to 15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet. .MONDAY...Northwest winds 5 to 10 knots becoming south. Waves 1 to 3 feet. .MONDAY NIGHT...South winds 10 to 15 knots. Waves 1 to 2 feet. .TUESDAY...Southwest winds 15 to 25 knots becoming west. A chance of showers during the day, then rain Tuesday night. Waves 3 to 5 feet building to 4 to 7 feet, then subsiding to 3 to 5 feet. Waves occasionally around 9 feet. .WEDNESDAY...Northwest winds 15 to 25 knots. Rain during the day. Waves 3 to 5 feet. .THURSDAY...Northwest winds 5 to 15 knots. Waves 2 to 4 feet subsiding to 1 to 2 feet. $$ LOZ063>065-211515- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 406 AM EDT Sun Apr 21 2024 .TODAY...West winds 10 to 15 knots increasing to 15 to 25 knots. Waves 2 to 4 feet building to 3 to 6 feet. .TONIGHT...West winds 15 to 25 knots becoming northwest and diminishing to 10 to 15 knots. Waves 3 to 6 feet subsiding to 2 to 4 feet. .MONDAY...North winds 5 to 15 knots becoming southwest. Waves 2 to 4 feet subsiding to 1 to 3 feet. .MONDAY NIGHT...South winds 5 to 15 knots. Waves 2 feet or less. .TUESDAY...South winds 15 to 20 knots becoming southwest 10 to 15 knots. Rain Tuesday night. Waves 2 to 4 feet building to 3 to 5 feet, then subsiding to 2 to 4 feet. .WEDNESDAY...Northwest winds 15 to 20 knots. Rain during the day. Waves 3 to 6 feet. .THURSDAY...Northwest winds 15 to 20 knots diminishing to 5 to 15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet. $$ LOZ061-211515- MAFOR 2109/ ONTARIO WEST 1/2 12610 14620 11610 11710. Waves 1 to 3 feet building to 3 to 5 feet today. Waves 3 to 5 feet subsiding to 2 to 4 feet tonight. ONTARIO EAST 1/2 11610 11620 13630 12620 11710. Waves 2 to 4 feet building to 3 to 6 feet today. Waves 3 to 6 feet subsiding to 2 to 4 feet tonight. $$ ####018000941#### FZUS61 KBUF 210806 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 406 AM EDT Sun Apr 21 2024 SLZ022-024-211515- Saint Lawrence River from Cape Vincent to Saint Regis 406 AM EDT Sun Apr 21 2024 .TODAY...Southwest winds 5 to 15 knots increasing to 15 to 20 knots. Mostly cloudy. .TONIGHT...Southwest winds 15 to 20 knots becoming northwest 5 to 15 knots. Partly cloudy. .MONDAY...North winds 5 to 10 knots becoming southwest. Sunny. .MONDAY NIGHT...Southwest winds 5 to 10 knots becoming south. Mainly clear. .TUESDAY...South winds 15 to 20 knots becoming southwest 10 to 15 knots. Rain Tuesday night. .WEDNESDAY...Northwest winds 10 to 15 knots. Rain during the day, then a chance of rain and snow showers Wednesday night. .THURSDAY...Northwest winds 5 to 15 knots becoming west. Becoming mainly clear. $$