FZUS61 KBUF 230902 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 402 AM 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 low just off the Carolina coast this morning will deepen to 28.8 inches today as it tracks northeastward off the mid- Atlantic and New England coastlines. A 30.1 inch high is then forecast to weaken and slide across the lower Great Lakes Tuesday and New England on Wednesday. A 29.4 inch low will track southeast across the eastern Great Lakes Wednesday into early Thursday. 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. LOZ062-063-231600- Lake Ontario open waters from the Niagara River to Sodus Bay- 402 AM EST Mon Feb 23 2026 .TODAY...North winds 15 to 25 knots. Snow showers this morning, then a chance of snow showers this afternoon. Waves 3 to 6 feet. .TONIGHT...Northwest winds 15 to 25 knots. A chance of snow showers. 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. 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 2 feet building to 3 to 5 feet. .WEDNESDAY...Southwest winds to 30 knots becoming west 15 to 25 knots. Snow during the day. Waves 5 to 8 feet building to 7 to 11 feet, then subsiding to 6 to 9 feet. Waves occasionally around 14 feet. .THURSDAY...West winds 15 to 20 knots becoming northwest 10 to 15 knots. A chance of snow. Waves 3 to 6 feet subsiding to 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. $$ LOZ064-065-231600- Lake Ontario open waters from Sodus Bay to the Saint Lawrence River- 402 AM EST Mon Feb 23 2026 .TODAY...North winds 15 to 25 knots. A chance of snow showers early. A chance of snow showers late. Waves 3 to 6 feet. .TONIGHT...North winds 15 to 20 knots becoming northwest. A chance of snow showers. Waves 3 to 6 feet. .TUESDAY...Northwest winds 15 to 20 knots becoming west 10 to 15 knots. Waves 3 to 5 feet subsiding to 2 to 4 feet. .TUESDAY NIGHT...Southwest winds 5 to 15 knots becoming south and increasing to 15 to 25 knots. A chance of snow in the evening, then snow overnight. Waves 1 to 3 feet building to 3 to 5 feet. .WEDNESDAY...South winds to 30 knots becoming west 15 to 25 knots. Snow during the day, then a chance of snow showers Wednesday night. Waves 3 to 6 feet building to 7 to 11 feet, then subsiding to 6 to 9 feet. Waves occasionally around 14 feet. .THURSDAY...West winds 15 to 20 knots becoming north 5 to 15 knots. A chance of snow. Waves 3 to 6 feet subsiding to 1 to 3 feet. .FRIDAY...West winds 10 to 15 knots becoming south and increasing to 15 to 25 knots. Waves 1 to 3 feet building to 3 to 5 feet. $$ LOZ061-231600- MAFOR 2310/ ONTARIO WEST 1/2 12820 12830 12730 12720. A chance of snow showers today and this evening. Waves 2 to 3 feet building to 3 to 6 feet today. Waves 4 to 7 feet subsiding to 3 to 5 feet, and occasionally around 9 feet tonight. ONTARIO EAST 1/2 11820 14830 11820 12720. A chance of snow showers. Waves 1 to 3 feet building to 3 to 6 feet today. Waves 3 to 6 feet tonight. $$