####018003627#### FZUS61 KBUF 190227 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1027 PM EDT Thu Apr 18 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 30.1 inch surface high pressure will quickly cross the lake tonight. A wavy frontal boundary will move across the Lake tomorrow. A 29.4 inch low over northern Quebec Friday night 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. LOZ062-190900- Lake Ontario open waters from the Niagara River to Hamlin Beach- 1027 PM EDT Thu Apr 18 2024 .OVERNIGHT...South winds 10 knots or less becoming southeast. Waves 2 feet or less. .FRIDAY...East winds 10 to 15 knots becoming west 15 to 20 knots. A chance of showers early, then showers. A chance of showers late. Waves 1 to 3 feet building to 2 to 4 feet. .FRIDAY NIGHT...West winds 15 to 20 knots diminishing to 10 to 15 knots. Waves 3 to 5 feet subsiding to 2 to 3 feet. .SATURDAY...West winds 15 to 20 knots. Waves 3 to 6 feet. .SATURDAY NIGHT...West winds 15 to 20 knots diminishing to 10 to 15 knots. Waves 3 to 6 feet. .SUNDAY...West winds 15 to 20 knots diminishing to 10 to 15 knots. Waves 2 to 4 feet. .MONDAY...West winds 5 to 10 knots becoming southwest. Waves 1 to 3 feet. .TUESDAY...Southwest winds 10 to 15 knots becoming northwest. Showers likely. Waves 1 to 3 feet. $$ LOZ063>065-190900- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 1027 PM EDT Thu Apr 18 2024 .OVERNIGHT...Southeast winds 10 to 15 knots. Waves 1 to 3 feet. .FRIDAY...Southeast winds 15 to 20 knots becoming southwest. A chance of showers late in the morning. Showers in the afternoon. Waves 2 to 4 feet building to 3 to 6 feet. .FRIDAY NIGHT...West winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of showers in the evening. Waves 3 to 6 feet subsiding to 2 to 4 feet. .SATURDAY...Southwest winds 15 to 25 knots becoming west to 30 knots. A chance of showers in the afternoon. Waves 2 to 4 feet building to 5 to 8 feet. Waves occasionally around 10 feet. .SATURDAY NIGHT...West winds to 30 knots diminishing to 15 to 25 knots. Waves 5 to 9 feet subsiding to 3 to 6 feet. Waves occasionally around 11 feet. .SUNDAY...West winds 15 to 20 knots. Waves 3 to 6 feet subsiding to 2 to 4 feet. .MONDAY...West winds 5 to 15 knots becoming south. Waves 2 to 4 feet subsiding to 1 to 3 feet. .TUESDAY...South winds 10 to 15 knots becoming west. Rain showers likely. Waves 1 to 3 feet. $$ LOZ061-190900- MAFOR 1903/ ONTARIO WEST 1/2 11400 11300 12310 11416 11520 11620 11610. Waves 1 foot or less overnight. Waves 1 to 2 feet building to 2 to 4 feet Friday. Waves 3 to 5 feet Friday evening. ONTARIO EAST 1/2 12310 12320 11326 11426 11520 11620. Waves 1 to 3 feet overnight. Waves 2 to 4 feet building to 3 to 6 feet Friday. Waves 3 to 6 feet Friday evening. $$ ####018001103#### FZUS61 KBUF 190227 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1027 PM EDT Thu Apr 18 2024 SLZ022-024-190900- Saint Lawrence River from Cape Vincent to Saint Regis 1027 PM EDT Thu Apr 18 2024 .OVERNIGHT...South winds 10 knots or less. Cloudy. .FRIDAY...South winds 5 to 15 knots increasing to 15 to 20 knots. Showers in the afternoon. .FRIDAY NIGHT...Southwest winds 15 to 20 knots diminishing to 10 to 15 knots. Rain showers in the evening. .SATURDAY...Southwest winds 10 to 15 knots becoming west. A chance of rain showers. .SATURDAY NIGHT...West winds 5 to 15 knots becoming southwest. A chance of rain showers in the evening. .SUNDAY...Southwest winds 15 to 20 knots becoming west 10 to 15 knots. Becoming mainly clear. .MONDAY...West winds 5 to 10 knots becoming south. Mainly clear, then becoming partly cloudy. .TUESDAY...South winds 5 to 10 knots becoming west. A chance of rain showers during the day, then rain showers likely Tuesday night. $$