FZUS61 KBUF 112103 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 403 PM EST Wed Feb 11 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 29.2 inch low will deepen to 29.0 inches as it slides along the southern Nova Scotia coastline this evening and overnight. A 30.3 inch area of high pressure over the mid Mississippi Valley this evening, will slowly move across the Ohio Valley Thursday 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. LOZ062-063-120400- Lake Ontario open waters from the Niagara River to Sodus Bay- 403 PM EST Wed Feb 11 2026 .TONIGHT...Northwest winds to 30 knots diminishing to 15 to 20 knots. Snow showers this evening, then a chance of snow showers after midnight. Waves 5 to 9 feet subsiding to 3 to 6 feet. Waves occasionally around 11 feet. .THURSDAY...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of snow showers early. Waves 3 to 5 feet subsiding to 1 to 3 feet. .THURSDAY NIGHT...Northwest winds 10 to 15 knots becoming west. Waves 1 to 3 feet. .FRIDAY...West winds 10 to 15 knots becoming southwest and increasing to 15 to 25 knots. Waves 1 to 3 feet building to 3 to 6 feet. .FRIDAY NIGHT...Southwest winds 15 to 25 knots becoming west. A chance of snow showers. Waves 3 to 6 feet building to 4 to 7 feet, then subsiding to 3 to 6 feet. Waves occasionally around 9 feet. .SATURDAY...West winds 15 to 20 knots becoming east 5 to 15 knots. Waves 3 to 5 feet subsiding to 1 foot or less. .SUNDAY...East winds around 10 knots becoming southeast. Waves 2 feet or less. .MONDAY...South winds 5 to 10 knots becoming southwest. Waves 1 foot or less. $$ LOZ064-065-120400- Lake Ontario open waters from Sodus Bay to the Saint Lawrence River- 403 PM EST Wed Feb 11 2026 .TONIGHT...Northwest winds 15 to 25 knots. Snow showers this evening, then a chance of snow showers after midnight. Waves 5 to 9 feet subsiding to 3 to 6 feet. Waves occasionally around 11 feet. .THURSDAY...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of snow showers early. Waves 3 to 5 feet subsiding to 1 to 3 feet. .THURSDAY NIGHT...Northwest winds 5 to 15 knots becoming west. Waves 1 to 3 feet. .FRIDAY...West winds 10 to 15 knots becoming southwest 15 to 20 knots. Waves 1 to 3 feet building to 3 to 5 feet. .FRIDAY NIGHT...Southwest winds 15 to 20 knots becoming west. Snow showers likely. Waves 3 to 6 feet. .SATURDAY...Northwest winds 15 to 20 knots becoming northeast 5 to 15 knots. Waves 3 to 5 feet subsiding to 1 foot or less. .SUNDAY...East winds 5 to 10 knots becoming southeast. Waves 1 foot or less. .MONDAY...South winds 5 to 10 knots becoming southwest. Waves 1 foot or less. $$ LOZ061-120400- MAFOR 1122/ ONTARIO WEST 1/2 11737 11730 14720 12710. Waves 5 to 9 feet subsiding to 3 to 6 feet, and occasionally around 11 feet tonight. Waves 2 to 4 feet subsiding to 1 to 3 feet Thursday. ONTARIO EAST 1/2 11747 11730 14720 12710. Waves 6 to 10 feet subsiding to 3 to 6 feet, and occasionally around 13 feet tonight. Waves 3 to 5 feet subsiding to 1 to 3 feet Thursday. $$