FZUS61 KBUF 250303 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1003 PM EST Tue Feb 24 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 will track from the upper Great Lakes tonight to the Ottawa Valley 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. A 28.9 inch low is expected to move near James Bay Saturday. LOZ062-063-251000- Lake Ontario open waters from the Niagara River to Sodus Bay- 1003 PM EST Tue Feb 24 2026 .OVERNIGHT...South winds 15 to 25 knots becoming southwest. Snow. Waves 1 to 3 feet building to 3 to 6 feet. .WEDNESDAY...Southwest winds 15 to 25 knots becoming west. A chance of snow showers in the morning, then snow showers likely in the afternoon. Waves 3 to 6 feet building to 5 to 8 feet. Waves occasionally around 10 feet. .WEDNESDAY NIGHT...West winds 15 to 25 knots. Lake effect snow showers. Waves 5 to 8 feet. Waves occasionally around 10 feet. .THURSDAY...West winds 15 to 20 knots diminishing to 10 to 15 knots. Lake effect snow showers likely in the morning. Waves 3 to 6 feet subsiding to 1 to 3 feet. .THURSDAY NIGHT...West winds 5 to 10 knots becoming south. Waves 1 to 2 feet. .FRIDAY...Southwest winds 10 to 15 knots increasing to 30 knots. Waves 1 to 3 feet building to 4 to 7 feet. Waves occasionally around 9 feet. .SATURDAY...Southwest winds 15 to 25 knots becoming northwest. A chance of snow showers Saturday night. Waves 5 to 8 feet subsiding to 3 to 6 feet. Waves occasionally around 10 feet. .SUNDAY...Northwest winds 15 to 20 knots becoming northeast. A chance of snow showers during the day. Waves 3 to 5 feet. $$ LOZ064-065-251000- Lake Ontario open waters from Sodus Bay to the Saint Lawrence River- 1003 PM EST Tue Feb 24 2026 .OVERNIGHT...Southeast winds 15 to 25 knots becoming south. Snow. Waves 2 feet or less building to 3 to 6 feet. .WEDNESDAY...South winds 15 to 25 knots becoming west. Snow showers. Waves 3 to 6 feet building to 4 to 7 feet. Waves occasionally around 9 feet. .WEDNESDAY NIGHT...West winds 15 to 25 knots. Lake effect snow showers. Waves 5 to 9 feet subsiding to 4 to 7 feet. Waves occasionally around 11 feet. .THURSDAY...West winds 15 to 20 knots diminishing to 10 to 15 knots. Snow showers likely in the morning. Waves 3 to 6 feet subsiding to 1 to 3 feet. .THURSDAY NIGHT...West winds 5 to 10 knots becoming south. Waves 2 feet or less. .FRIDAY...South winds 5 to 10 knots increasing to 15 to 25 knots. Waves 2 feet or less building to 4 to 7 feet. Waves occasionally around 9 feet. .SATURDAY...Southwest winds 15 to 25 knots becoming northwest. A chance of snow showers Saturday night. Waves 5 to 8 feet subsiding to 3 to 5 feet. Waves occasionally around 10 feet. .SUNDAY...North winds 15 to 20 knots becoming northeast. A chance of snow showers during the day. Waves 3 to 5 feet. $$ LOZ061-251000- MAFOR 2504/ ONTARIO WEST 1/2 11427 11537 12520 14630. A chance of lake effect snow showers Wednesday evening. Waves 1 to 3 feet building to 3 to 6 feet overnight. Waves 3 to 6 feet building to 5 to 8 feet, and occasionally around 10 feet Wednesday. Waves 5 to 8 feet, and occasionally around 10 feet Wednesday evening. ONTARIO EAST 1/2 11427 12437 11530 11527 11630 12637. Waves 2 feet or less building to 3 to 6 feet overnight. Waves 3 to 6 feet building to 5 to 8 feet, and occasionally around 10 feet Wednesday. Waves 5 to 9 feet, and occasionally around 11 feet Wednesday evening. $$