FZUS61 KBUF 240302 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1002 PM EST Mon Feb 23 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 strong 28.8 inch low will continue to move northeast to the Canadian Maritimes through Tuesday. A 30.1 inch ridge will briefly build over the lower Great Lakes Tuesday. A 29.4 inch low will then track from the upper Great Lakes Tuesday to the Ottawa Valley by late Wednesday, with a trailing cold front crossing the lake Wednesday afternoon. A surface low of 29.5 inches will track from the Tennessee Valley to the Gulf of Maine from Thursday through Friday, staying well south and east of the lake. LOZ062-063-241000- Lake Ontario open waters from the Niagara River to Sodus Bay- 1002 PM EST Mon Feb 23 2026 .OVERNIGHT...Northwest winds 15 to 25 knots. Snow likely, then a chance of snow showers late. Waves 4 to 7 feet subsiding to 3 to 5 feet. Waves occasionally around 9 feet. .TUESDAY...Northwest winds 15 to 20 knots becoming southwest 10 to 15 knots. A chance of snow showers in the morning. Waves 3 to 5 feet subsiding to 1 to 3 feet. .TUESDAY NIGHT...South winds 10 to 15 knots increasing to 15 to 25 knots. Snow. Waves 1 to 3 feet building to 3 to 6 feet. .WEDNESDAY...Southwest winds to 30 knots becoming west. Snow in the morning, then a chance of snow showers in the afternoon. Waves 5 to 8 feet building to 6 to 10 feet. Waves occasionally around 13 feet. .WEDNESDAY NIGHT...West winds to 30 knots diminishing to 15 to 20 knots. Snow showers likely. Waves 7 to 11 feet subsiding to 4 to 7 feet. Waves occasionally around 14 feet. .THURSDAY...West winds 10 to 15 knots becoming north. A chance of snow Thursday night. Waves 3 to 6 feet subsiding to 1 to 3 feet. .FRIDAY...West winds 10 to 15 knots becoming southwest and increasing to 30 knots. Waves 1 to 2 feet building to 5 to 8 feet. Waves occasionally around 10 feet. .SATURDAY...Southwest winds 15 to 25 knots becoming northwest. A chance of snow showers Saturday night. Waves 4 to 7 feet subsiding to 3 to 6 feet. Waves occasionally around 9 feet. $$ LOZ064-065-241000- Lake Ontario open waters from Sodus Bay to the Saint Lawrence River- 1002 PM EST Mon Feb 23 2026 .OVERNIGHT...Northwest winds 15 to 20 knots. A chance of snow showers. Waves 3 to 6 feet. .TUESDAY...Northwest winds 15 to 20 knots becoming west 10 to 15 knots. A chance of snow showers early in the afternoon. Waves 3 to 5 feet subsiding to 1 to 3 feet. .TUESDAY NIGHT...Southwest winds 5 to 15 knots becoming south and increasing to 15 to 25 knots. A chance of snow showers in the evening, then snow overnight. Waves 2 feet or less building to 3 to 6 feet. .WEDNESDAY...South winds to 30 knots becoming west. Snow in the morning, then a chance of snow showers in the afternoon. Waves 3 to 6 feet building to 7 to 10 feet. Waves occasionally around 13 feet. .WEDNESDAY NIGHT...West winds to 30 knots diminishing to 15 to 25 knots. Snow showers likely. Waves 7 to 11 feet subsiding to 5 to 9 feet. Waves occasionally around 14 feet. .THURSDAY...West winds 5 to 15 knots becoming north. A chance of snow. Waves 3 to 6 feet subsiding to 1 to 3 feet. .FRIDAY...Northwest winds 10 to 15 knots becoming south and increasing to 15 to 25 knots. Waves 2 feet or less building to 3 to 6 feet. .SATURDAY...Southwest winds 15 to 25 knots becoming northwest. A chance of snow showers Saturday night. Waves 3 to 6 feet building to 4 to 7 feet, then subsiding to 3 to 6 feet. Waves occasionally around 9 feet. $$ LOZ061-241000- MAFOR 2404/ ONTARIO WEST 1/2 14720 11610 11510 12417. A chance of snow showers overnight. Waves 3 to 6 feet overnight. Waves 2 to 4 feet subsiding to 1 to 3 feet Tuesday. Waves 1 to 2 feet Tuesday evening. ONTARIO EAST 1/2 11727 13720 12610 11500 11410. A chance of snow showers overnight, Tuesday morning, and Tuesday evening. Waves 3 to 6 feet overnight. Waves 3 to 5 feet subsiding to 1 to 3 feet Tuesday. Waves 2 feet or less Tuesday evening. $$