FZUS61 KBUF 010303 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1003 PM 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 will move across northern Quebec tonight with a weak secondary cold front crossing the lake. 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. A 30.4 inch high will then build across the Lower Lakes region Wednesday, with another 29.5 inch low crossing the lake on Thursday. LOZ062-063-011000- Lake Ontario open waters from the Niagara River to Sodus Bay- 1003 PM EST Sat Feb 28 2026 .OVERNIGHT...Northwest winds 15 to 20 knots becoming north 10 to 15 knots. A chance of snow. Waves 3 to 5 feet subsiding to 2 to 4 feet. .SUNDAY...North winds 10 to 15 knots becoming northwest. A chance of snow early, then scattered flurries from late morning on. Waves 2 to 4 feet. .SUNDAY NIGHT...Northwest winds 5 to 15 knots. Scattered flurries in the evening. Waves 1 to 3 feet. .MONDAY...Northwest winds 10 knots or less becoming southeast. Waves 1 foot or less. .MONDAY NIGHT...Southeast 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. 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. .THURSDAY...Southeast winds 15 to 25 knots. Rain showers likely. Waves 2 to 4 feet building to 3 to 5 feet. $$ LOZ064-065-011000- Lake Ontario open waters from Sodus Bay to the Saint Lawrence River- 1003 PM EST Sat Feb 28 2026 .OVERNIGHT...North winds 15 to 20 knots becoming northeast 10 to 15 knots. Snow likely. Waves 3 to 5 feet subsiding to 2 to 4 feet. .SUNDAY...North winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of snow early. Scattered flurries in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet. .SUNDAY NIGHT...Northwest winds 5 to 15 knots becoming northeast. Waves 2 feet or less. .MONDAY...Northeast winds 10 knots or less becoming south. Waves 1 foot or less. .MONDAY NIGHT...Southeast winds 5 to 15 knots becoming south 15 to 20 knots. Waves 2 feet or less building to 2 to 4 feet. .TUESDAY...South winds 15 to 20 knots becoming north. Snow and rain showers likely. Waves 2 to 4 feet. .WEDNESDAY...North winds 15 to 20 knots becoming southeast. A chance of rain showers Wednesday night. Waves 1 to 3 feet. .THURSDAY...Southeast winds 15 to 25 knots. Rain showers likely. Waves 2 to 4 feet building to 3 to 5 feet. $$ LOZ061-011000- MAFOR 0104/ ONTARIO WEST 1/2 14810 11810 13710. A chance of snow overnight. Waves 3 to 5 feet subsiding to 2 to 4 feet overnight. Waves 2 to 3 feet Sunday and Sunday evening. ONTARIO EAST 1/2 12810 11110 13810 12710. A chance of snow overnight. Waves 3 to 5 feet subsiding to 2 to 4 feet overnight. Waves 2 to 4 feet subsiding to 1 to 3 feet Sunday. Waves 2 feet or less Sunday evening. $$