FZUS61 KBUF 081410 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1010 AM EDT Wed Apr 8 2026 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 30.6 inch high over the lower Great Lakes will move east across New England today, before moving southeast of Nova Scotia Thursday. A 29.5 inch low will move from the north shore of Lake Superior tonight to northern Quebec by Thursday night, with a trailing cold front crossing the lake Thursday night and Friday. A 30.5 inch high is then forecast to build into the central Great Lakes Saturday, then drift east to New England by Sunday. LOZ062-082100- Lake Ontario open waters from the Niagara River to Hamlin Beach- 1010 AM EDT Wed Apr 8 2026 .THIS AFTERNOON...Southeast winds 5 to 15 knots becoming east 15 to 20 knots. Waves 2 feet or less building to 2 to 4 feet. .TONIGHT...East winds 15 to 20 knots becoming south. Waves 2 to 4 feet subsiding to 1 to 3 feet. .THURSDAY...South winds 15 to 20 knots becoming southwest. A chance of showers in the afternoon. Waves 2 to 4 feet building to 3 to 5 feet. .THURSDAY NIGHT...Southwest winds 15 to 20 knots becoming northwest 5 to 15 knots. A chance of rain showers. Waves 3 to 5 feet subsiding to 1 to 3 feet. .FRIDAY...North winds 10 knots or less becoming northwest. Rain showers. Waves 1 foot or less. .SATURDAY...Northwest winds 10 knots or less becoming southeast. Waves 1 foot or less. .SUNDAY...East winds 5 to 15 knots becoming southwest 15 to 20 knots. A chance of rain showers Sunday night. Waves 2 feet or less building to 2 to 4 feet. $$ LOZ063>065-082100- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 1010 AM EDT Wed Apr 8 2026 .THIS AFTERNOON...South winds 5 to 15 knots becoming east 15 to 20 knots. Waves 1 to 3 feet. .TONIGHT...East winds 15 to 25 knots becoming south. Waves 1 to 3 feet building to 3 to 5 feet. .THURSDAY...South winds 15 to 25 knots. A chance of rain showers in the afternoon. Waves 3 to 6 feet. .THURSDAY NIGHT...South winds 15 to 20 knots becoming west and diminishing to 5 to 10 knots. A chance of rain showers in the evening. Waves 3 to 5 feet subsiding to 1 to 3 feet. .FRIDAY...Northwest winds 5 to 10 knots. Rain showers likely. Waves 2 feet or less. .SATURDAY...Northwest winds 10 knots or less becoming south. Waves 2 feet or less. .SUNDAY...Southeast winds 5 to 10 knots becoming south and increasing to 15 to 25 knots. A chance of rain showers Sunday night. Waves 1 foot or less building to 3 to 6 feet. $$ LOZ061-082100- MAFOR 0815/ ONTARIO WEST 1/2 11210 12220 11310 11410 13420. Waves 2 feet or less building to 2 to 4 feet this afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet tonight. Waves 2 to 4 feet Thursday morning. ONTARIO EAST 1/2 11300 12220 11310 11420 13430. Waves 1 foot or less building to 1 to 3 feet this afternoon. Waves 1 to 3 feet building to 3 to 5 feet tonight. Waves 3 to 6 feet Thursday morning. $$