FZUS61 KBUF 280903 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 402 AM EST Sat Feb 28 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 29.1 inch low near James Bay will move across northern Quebec today while swinging a cold front across the lake this morning, with a weak secondary cold front then crossing the lake tonight. A 30.6 inch high will then settle across the Great Lakes Sunday, New England Monday, and across the western Atlantic Tuesday. A weak wave of low pressure averaging 30.1 inches will track across the Ohio Valley and Lower Great Lakes Tuesday and Tuesday night, with a 30.4 inch high then building across the Lower Lakes region Wednesday. LOZ062-063-281600- Lake Ontario open waters from the Niagara River to Sodus Bay- 402 AM EST Sat Feb 28 2026 .TODAY...West winds 15 to 20 knots becoming northwest. Rain showers likely early. Waves 4 to 7 feet subsiding to 3 to 6 feet. Waves occasionally around 9 feet. .TONIGHT...Northwest winds 15 to 20 knots becoming north 10 to 15 knots. A chance of snow after midnight. Waves 3 to 6 feet subsiding to 2 to 4 feet. .SUNDAY...North winds 15 to 20 knots becoming northwest 10 to 15 knots. A chance of snow showers in the morning. Waves 2 to 4 feet. .SUNDAY NIGHT...Northwest winds 5 to 15 knots becoming north. Waves 1 to 3 feet. .MONDAY...Northwest winds 5 to 15 knots becoming south 15 to 20 knots. Waves 1 to 3 feet. .TUESDAY...South winds 15 to 20 knots becoming northwest. Rain and snow showers likely. Waves 1 to 3 feet. .WEDNESDAY...North winds 15 to 20 knots becoming southeast. A chance of rain showers Wednesday night. Waves 1 to 3 feet building to 2 to 4 feet. $$ LOZ064-065-281600- Lake Ontario open waters from Sodus Bay to the Saint Lawrence River- 402 AM EST Sat Feb 28 2026 .TODAY...Southwest winds 15 to 25 knots becoming west. Rain showers early, then a chance of rain showers late this morning. Waves 4 to 7 feet subsiding to 3 to 6 feet. Waves occasionally around 9 feet. .TONIGHT...Northwest winds 15 to 20 knots becoming north 5 to 15 knots. A chance of snow after midnight. Waves 3 to 6 feet subsiding to 1 to 3 feet. .SUNDAY...Northeast winds 15 to 20 knots becoming northwest 10 to 15 knots. A chance of snow showers in the morning. Waves 2 to 4 feet subsiding to 1 to 3 feet. .SUNDAY NIGHT...Northwest winds 5 to 15 knots becoming north. Waves 1 to 3 feet. .MONDAY...Northwest winds 5 to 15 knots becoming south 15 to 20 knots. Waves 2 feet or less building to 2 to 4 feet. .TUESDAY...South winds 15 to 20 knots becoming north. Snow and rain showers likely. Waves 2 to 4 feet. .WEDNESDAY...North winds 15 to 20 knots becoming southeast. A chance of rain showers Wednesday night. Waves 1 to 3 feet. $$ LOZ061-281600- MAFOR 2810/ ONTARIO WEST 1/2 11536 12620 13720 12810. A chance of snow overnight. Waves 4 to 7 feet subsiding to 3 to 6 feet, and occasionally around 9 feet today. Waves 3 to 5 feet subsiding to 2 to 4 feet tonight. ONTARIO EAST 1/2 11536 13620 12720 12810. A chance of snow overnight. Waves 5 to 8 feet subsiding to 3 to 6 feet, and occasionally around 10 feet today. Waves 3 to 6 feet subsiding to 1 to 3 feet tonight. $$