####018003380#### FZUS61 KBUF 191340 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 940 AM EDT Fri Apr 19 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 wavy frontal boundary will move across the Lake today. A 29.4 inch low over northern Quebec tonight will continue to move away from the region on Saturday...while an expansive 30.6 inch high will move from the Canadian Rockies to the northern plains. The large high will continue to push south to the Lower Mississippi valley by late Sunday. The high will be centered over the Ohio valley on Monday. This high will slip to the east Tuesday, while a 29.6 inch surface low deepens across the western Great Lakes, with a warm front extending towards the Lake Tuesday night. LOZ062-192115- Lake Ontario open waters from the Niagara River to Hamlin Beach- 940 AM EDT Fri Apr 19 2024 .THIS AFTERNOON...East winds 10 to 15 knots becoming west 15 to 20 knots. Showers through early afternoon, then scattered showers late. Waves 1 to 3 feet. .TONIGHT...West winds 15 to 20 knots diminishing to 10 to 15 knots. Waves 2 to 4 feet. .SATURDAY...West winds 15 to 20 knots. Waves 2 to 4 feet building to 3 to 6 feet. .SATURDAY NIGHT...West winds 15 to 20 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet. .SUNDAY...West winds 15 to 20 knots diminishing to 10 to 15 knots. Waves 2 to 4 feet building to 3 to 5 feet, then subsiding to 2 to 4 feet. .MONDAY...Northwest winds 5 to 10 knots becoming south. Waves 1 to 3 feet. .TUESDAY...South winds 10 to 15 knots becoming west. Showers. Waves 1 to 3 feet. $$ LOZ063>065-192115- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 940 AM EDT Fri Apr 19 2024 .THIS AFTERNOON...Southeast winds 15 to 20 knots becoming southwest. Showers. Waves 2 to 4 feet building to 3 to 5 feet. .TONIGHT...West winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of showers early. Waves 2 to 4 feet subsiding to 1 to 3 feet. .SATURDAY...West winds 15 to 25 knots increasing to 30 knots. Waves 1 to 3 feet building to 5 to 8 feet. Waves occasionally around 10 feet. .SATURDAY NIGHT...West winds to 30 knots diminishing to 15 to 20 knots. Waves 5 to 9 feet subsiding to 2 to 4 feet. Waves occasionally around 11 feet. .SUNDAY...West winds 15 to 20 knots. Waves 3 to 6 feet. .MONDAY...Northwest winds 5 to 15 knots becoming south. Waves 2 to 4 feet subsiding to 2 feet or less. .TUESDAY...South winds 10 to 15 knots becoming southwest. A chance of showers during the day, then showers Tuesday night. Waves 1 to 3 feet. $$ LOZ061-192115- MAFOR 1915/ ONTARIO WEST 1/2 11316 11520 19526 11620 13610 12620. Waves 1 to 3 feet this afternoon. Waves 2 to 4 feet tonight. Waves 2 to 4 feet building to 3 to 5 feet Saturday morning. ONTARIO EAST 1/2 11326 11426 11520 14610 11630. Waves 2 to 4 feet building to 3 to 5 feet this afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet tonight. Waves 1 to 3 feet building to 3 to 5 feet Saturday morning. $$ Hitchcock ####018001108#### FZUS61 KBUF 191340 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 940 AM EDT Fri Apr 19 2024 SLZ022-024-192115- Saint Lawrence River from Cape Vincent to Saint Regis 940 AM EDT Fri Apr 19 2024 .THIS AFTERNOON...South winds 5 to 10 knots increasing to 15 to 20 knots. Showers developing. .TONIGHT...Southwest winds 10 to 15 knots. Rain showers early, then a chance of rain showers late in the evening. .SATURDAY...Southwest winds 10 to 15 knots increasing to 15 to 20 knots. A chance of rain showers in the afternoon. .SATURDAY NIGHT...Southwest winds 15 to 20 knots diminishing to 5 to 10 knots. A chance of rain showers in the evening. .SUNDAY...Southwest winds 10 to 15 knots becoming west. Partly to mostly cloudy. .MONDAY...Northwest winds 5 to 10 knots becoming south. Mainly clear, then becoming partly cloudy. .TUESDAY...South winds 10 to 15 knots becoming southwest. A chance of rain showers during the day, then rain showers Tuesday night. $$ Hitchcock