FZUS61 KBUF 210302 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1002 PM EST Fri Feb 20 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 29.4 inch low over the central Great Lakes will drift to southern Ontario and weaken to a remnant 29.9 inch trough through the day Saturday. Another 29.8 inch low will move off the Carolina coast Saturday night, then will deepen to 28.8 inches as it tracks northeastward off the mid-Atlantic and New England coastlines Sunday through Monday. A 30.1 inch high is then forecast to weaken and slide across the Lower Great Lakes on Tuesday and New England on Wednesday. LOZ062-063-211000- Lake Ontario open waters from the Niagara River to Sodus Bay- 1002 PM EST Fri Feb 20 2026 .REST OF TONIGHT...Southwest winds 15 to 20 knots becoming west. A chance of rain and snow showers late this evening, then a chance of snow showers after midnight. Snow showers likely late. Waves 3 to 6 feet. .SATURDAY...Northwest winds 10 to 15 knots becoming east. A chance of snow showers early, then snow showers likely from late morning on. Waves 3 to 5 feet subsiding to 2 to 4 feet. .SATURDAY NIGHT...East winds 10 to 15 knots. A chance of snow showers. Waves 1 to 3 feet. .SUNDAY...East winds 5 to 10 knots. Snow. Waves 1 to 2 feet. .SUNDAY NIGHT...East winds 10 to 15 knots becoming northeast. Snow likely. Waves 1 to 3 feet. .MONDAY...North winds 15 to 25 knots becoming northwest 15 to 20 knots. A chance of snow showers. Waves 2 to 4 feet building to 4 to 7 feet, then subsiding to 3 to 6 feet. Waves occasionally around 9 feet. .TUESDAY...Northwest winds 15 to 20 knots becoming south. Snow likely Tuesday night. Waves 3 to 5 feet subsiding to 1 to 3 feet. .WEDNESDAY...South winds 15 to 20 knots becoming west. Snow and rain likely. Waves 2 to 4 feet building to 3 to 5 feet. $$ LOZ064-065-211000- Lake Ontario open waters from Sodus Bay to the Saint Lawrence River- 1002 PM EST Fri Feb 20 2026 .REST OF TONIGHT...Southwest winds 15 to 20 knots becoming west. Snow showers likely with a chance of rain showers late this evening, then snow showers likely after midnight. Waves 3 to 6 feet. .SATURDAY...North winds 10 to 15 knots becoming northeast. A chance of snow showers early, then snow showers likely late in the morning. A chance of snow showers in the afternoon. Waves 3 to 5 feet subsiding to 1 to 3 feet. .SATURDAY NIGHT...Northeast winds 5 to 15 knots becoming east. A chance of snow showers. Waves 2 feet or less. .SUNDAY...East winds 5 to 10 knots. Snow likely. Waves 2 feet or less. .SUNDAY NIGHT...East winds 10 to 15 knots becoming northeast. Snow likely. Waves 2 feet or less. .MONDAY...North winds 15 to 20 knots becoming northwest. A chance of snow showers. Waves 1 to 3 feet building to 3 to 5 feet. .TUESDAY...Northwest winds 15 to 20 knots becoming southeast 5 to 15 knots. A chance of snow showers during the day, then a chance of snow Tuesday night. Waves 3 to 5 feet subsiding to 1 to 3 feet. .WEDNESDAY...South winds 15 to 20 knots becoming southwest. Snow and rain likely. Waves 1 to 3 feet building to 3 to 5 feet. $$ LOZ061-211000- MAFOR 2104/ ONTARIO WEST 1/2 11520 11620 11610 11817 14210. A chance of rain showers late this evening. Waves 3 to 6 feet overnight. Waves 2 to 4 feet Saturday and Saturday evening. ONTARIO EAST 1/2 11520 11620 11710 11810 14110. A chance of snow and rain showers late this evening, then a chance of snow showers overnight. A chance of snow showers Saturday and Saturday evening. Waves 3 to 6 feet overnight. Waves 3 to 5 feet subsiding to 1 to 3 feet Saturday. Waves 2 feet or less Saturday evening. $$