FZUS61 KBUF 062102 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 402 PM EST Fri Mar 6 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 warm front will lift north across the lower Great Lakes today. A 29.6 inch low will lift across the upper Great Lakes Saturday, with its trailing cold front crossing the lake Saturday night. A large 30.1 inch high will then move from the lower Ohio Valley to the Mid Atlantic region Sunday and Monday while ridging north across the lake. A 28.9 inch low may move across James Bay Monday while pressure averages 29.9 inches across the lake Tuesday. LOZ062-063-070400- Lake Ontario open waters from the Niagara River to Sodus Bay- 402 PM EST Fri Mar 6 2026 .TONIGHT...East winds 10 to 15 knots becoming south and increasing to 15 to 25 knots. A chance of rain showers late this evening. Rain showers likely with a chance of thunderstorms after midnight. Waves 1 to 2 feet building to 3 to 6 feet. .SATURDAY...South winds 15 to 25 knots becoming southwest to 30 knots. Showers likely with a chance of thunderstorms early, then a chance of showers and thunderstorms late in the morning. Showers with a chance of thunderstorms in the afternoon. Waves 3 to 6 feet building to 4 to 7 feet. Waves occasionally around 9 feet. .SATURDAY NIGHT...Southwest winds 15 to 25 knots becoming west. Rain showers likely with a chance of thunderstorms in the evening, then rain showers likely overnight. Waves 4 to 7 feet subsiding to 3 to 6 feet. Waves occasionally around 9 feet. .SUNDAY...West winds 15 to 25 knots becoming southwest. Waves 3 to 6 feet. .SUNDAY NIGHT...Southwest winds 15 to 25 knots. Waves 3 to 6 feet. .MONDAY...Southwest winds 15 to 25 knots becoming west and diminishing to 10 to 15 knots. Waves 3 to 6 feet subsiding to 2 to 4 feet. .TUESDAY...North winds 5 to 15 knots becoming northeast and increasing to 15 to 25 knots. A chance of rain showers during the day, then rain showers Tuesday night. Waves 1 to 3 feet building to 4 to 7 feet. Waves occasionally around 9 feet. .WEDNESDAY...Northeast winds to 30 knots becoming north. Rain showers during the day, then rain showers likely with a chance of snow showers Wednesday night. Waves 5 to 8 feet. Waves occasionally around 10 feet. Winds and waves higher in and near thunderstorms. $$ LOZ064-065-070400- Lake Ontario open waters from Sodus Bay to the Saint Lawrence River- 402 PM EST Fri Mar 6 2026 .TONIGHT...Southeast winds 15 to 25 knots becoming south to 30 knots. Rain showers likely after midnight. Rain showers likely with a chance of thunderstorms late. Waves 1 to 3 feet building to 4 to 7 feet. Waves occasionally around 9 feet. .SATURDAY...South winds 15 to 25 knots. Showers with a chance of thunderstorms. Waves 4 to 7 feet subsiding to 3 to 6 feet. Waves occasionally around 9 feet. .SATURDAY NIGHT...South winds 15 to 20 knots becoming west. Rain showers with a chance of thunderstorms in the evening, then rain showers overnight. Waves 3 to 6 feet. .SUNDAY...West winds 15 to 20 knots becoming southwest. A chance of rain showers in the morning. Waves 3 to 6 feet subsiding to 2 to 4 feet. .SUNDAY NIGHT...Southwest winds 15 to 20 knots becoming south 10 to 15 knots. Waves 3 to 5 feet subsiding to 2 to 4 feet. .MONDAY...South winds 15 to 20 knots becoming southwest 10 to 15 knots. Waves 2 to 4 feet. .TUESDAY...Northwest winds 5 to 10 knots becoming northeast and increasing to 15 to 25 knots. A chance of rain showers during the day, then rain showers Tuesday night. Waves 1 to 3 feet building to 3 to 5 feet. .WEDNESDAY...Northeast winds to 30 knots becoming north. Rain showers during the day, then rain and snow showers likely Wednesday night. Waves 3 to 6 feet building to 5 to 8 feet. Waves occasionally around 10 feet. Winds and waves higher in and near thunderstorms. $$ LOZ061-070400- MAFOR 0622/ ONTARIO WEST 1/2 11200 11210 11420 12526 11520 12536. A chance of thunderstorms overnight and Saturday. Waves 1 to 3 feet building to 2 to 4 feet tonight. Waves 2 to 4 feet building to 4 to 7 feet, and occasionally around 9 feet Saturday. ONTARIO EAST 1/2 11310 11320 11330 11446 11436 12430 11436. A chance of thunderstorms overnight and Saturday. Waves 1 to 3 feet building to 4 to 7 feet, and occasionally around 9 feet tonight. Waves 4 to 7 feet subsiding to 3 to 6 feet, and occasionally around 9 feet Saturday. $$