FZUS61 KBUF 120902 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 402 AM EST Thu Feb 12 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 30.4 inch area of high pressure over the mid Mississippi Valley will slowly move across the Ohio Valley today and eventually to the Carolinas on Friday. Meanwhile, a 29.7 inch area of low pressure over central Quebec Friday will move southeast across New England Saturday and off the coast Saturday night. A 30.3 inch high will build southeast into the Ottawa Valley Saturday, then into New England Sunday. Following a weak cold frontal passage Sunday night, another area of high pressure will build across the lake Monday, averaging 30.2 inches. LOZ062-063-121600- Lake Ontario open waters from the Niagara River to Sodus Bay- 402 AM EST Thu Feb 12 2026 .TODAY...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots. Snow showers likely early, then a chance of snow showers. Waves 2 to 4 feet subsiding to 1 to 3 feet. .TONIGHT...Northwest winds 10 to 15 knots becoming west. Waves 1 to 3 feet. .FRIDAY...West winds 10 to 15 knots becoming southwest 15 to 20 knots. Waves 1 to 3 feet building to 3 to 5 feet. .FRIDAY NIGHT...Southwest winds 15 to 25 knots becoming west. A chance of snow showers. Waves 3 to 6 feet. .SATURDAY...West winds 15 to 20 knots becoming south 5 to 15 knots. Waves 3 to 5 feet subsiding to 1 foot or less. .SUNDAY...Southeast winds 5 to 10 knots becoming southwest. Waves 2 feet or less. .MONDAY...West winds 5 to 10 knots becoming southwest. Waves 1 foot or less. $$ LOZ064-065-121600- Lake Ontario open waters from Sodus Bay to the Saint Lawrence River- 402 AM EST Thu Feb 12 2026 .TODAY...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of snow showers this morning. Waves 2 to 4 feet subsiding to 1 to 3 feet. .TONIGHT...Northwest winds 5 to 15 knots. Waves 1 to 3 feet. .FRIDAY...Northwest winds 5 to 15 knots becoming southwest. Waves 1 to 3 feet building to 2 to 4 feet. .FRIDAY NIGHT...Southwest winds 15 to 20 knots becoming west. Snow showers likely. Waves 2 to 4 feet building to 3 to 6 feet. .SATURDAY...Northwest winds 5 to 15 knots becoming south. Waves 3 to 5 feet subsiding to 1 foot or less. .SUNDAY...Southeast winds 5 to 10 knots becoming south. Waves 1 foot or less. .MONDAY...Southwest winds 5 to 10 knots becoming south. Waves 1 foot or less. $$ LOZ061-121600- MAFOR 1210/ ONTARIO WEST 1/2 15710 12700. A chance of snow showers this morning. Waves 2 to 4 feet subsiding to 1 to 3 feet today. Waves 1 to 3 feet tonight. ONTARIO EAST 1/2 15710 12700. A chance of lake effect snow showers this morning. Waves 3 to 5 feet subsiding to 1 to 3 feet today. Waves 1 to 3 feet tonight. $$