####018003365#### FZUS61 KBUF 211746 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 146 PM 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 Plains this afternoon, will continue to push south into the southern Plains by this evening, before sliding east across the lower Mississippi Valley tonight. The high will weaken some to 30.2 inches 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. The low will slowly weaken to 29.7 inches as it crosses the Lake late Tuesday night and Wednesday while dragging a cold front across the Lake. A 30.4 inch high will then build across the Lake Wednesday night through Thursday night. LOZ062-212130- Lake Ontario open waters from the Niagara River to Hamlin Beach- 146 PM EDT Sun Apr 21 2024 .THIS AFTERNOON...West winds 15 to 20 knots becoming southwest. Waves 2 to 4 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...North 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 becoming north. Waves 2 to 4 feet subsiding to 1 to 2 feet. $$ LOZ063>065-212130- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 146 PM EDT Sun Apr 21 2024 .THIS AFTERNOON...West winds 15 to 20 knots. Waves 3 to 6 feet. .TONIGHT...West winds 15 to 20 knots becoming northwest. Waves 3 to 6 feet subsiding to 2 to 4 feet. .MONDAY...North winds 5 to 15 knots becoming southwest. Waves 2 to 4 feet subsiding to 1 to 3 feet. .MONDAY NIGHT...South winds 5 to 15 knots. Waves 2 feet or less. .TUESDAY...South winds 15 to 20 knots becoming southwest 10 to 15 knots. Rain Tuesday night. Waves 2 to 4 feet building to 3 to 5 feet, then subsiding to 2 to 4 feet. .WEDNESDAY...Northwest winds 15 to 20 knots. Rain during the day. Waves 3 to 6 feet. .THURSDAY...Northwest winds 15 to 20 knots becoming west 5 to 15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet. $$ LOZ061-212130- MAFOR 2115/ ONTARIO WEST 1/2 14620 11610 11710 11800 11700. Waves 2 to 4 feet building to 3 to 5 feet this afternoon. Waves 3 to 5 feet subsiding to 2 to 4 feet tonight. Waves 1 to 3 feet Monday morning. ONTARIO EAST 1/2 14620 11620 11720 11810 11800. Waves 2 to 4 feet building to 3 to 6 feet this afternoon. Waves 3 to 6 feet subsiding to 2 to 4 feet tonight. Waves 2 to 4 feet subsiding to 1 to 3 feet Monday morning. $$ ####018000978#### FZUS61 KBUF 211746 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 146 PM EDT Sun Apr 21 2024 SLZ022-024-212130- Saint Lawrence River from Cape Vincent to Saint Regis 146 PM EDT Sun Apr 21 2024 .THIS AFTERNOON...West winds 10 to 15 knots becoming southwest. Mostly cloudy. .TONIGHT...Southwest winds 10 to 15 knots becoming northwest. A chance of rain showers late in the evening. .MONDAY...Northwest winds 5 to 10 knots becoming southwest. Sunny. .MONDAY NIGHT...Southwest winds 5 to 10 knots becoming south. Mainly clear. .TUESDAY...South winds 15 to 20 knots becoming southwest 10 to 15 knots. Rain Tuesday night. .WEDNESDAY...Northwest winds 10 to 15 knots. Rain during the day, then a chance of rain and snow showers Wednesday night. .THURSDAY...Northwest winds 5 to 15 knots becoming west less than 10 knots. Becoming mainly clear. $$