FZUS61 KBUF 101737 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 137 PM EDT Tue Mar 10 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 29.8 inch ridge will persist through today as a stationary boundary lingers near the lower Great Lakes. 29.6 inch low will ripple along the boundary Wednesday, with this wave passing just to the west of the lake Wednesday night. This low will deepen to 29.4 inches as it moves across southern Quebec Thursday. A 30.2 inch high will move across the Ohio Valley and Mid- Atlantic region Thursday night through Friday. A 29.6 inch surface low will pass across the lake Friday night with a cold front, then shifting east of the lake Saturday. LOZ062-102115- Lake Ontario open waters from the Niagara River to Hamlin Beach- 137 PM EDT Tue Mar 10 2026 ...GALE WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH THURSDAY MORNING... .THIS AFTERNOON...North winds 10 knots or less becoming northeast. A chance of showers late. Waves around 1 foot. .TONIGHT...Northeast winds 10 to 15 knots becoming east and increasing to 15 to 25 knots. Rain showers likely early, then a chance of rain showers. Rain showers likely with a chance of thunderstorms late. Waves 1 to 3 feet building to 3 to 5 feet. .WEDNESDAY...East winds 15 to 25 knots becoming south and diminishing to 10 to 15 knots. Rain showers with a chance of thunderstorms. Waves 3 to 5 feet subsiding to 2 to 4 feet. .WEDNESDAY NIGHT...Southwest winds 15 to 20 knots becoming west and increasing to 35 knot gales overnight. Rain showers in the evening, then a chance of rain and snow showers overnight. Waves 2 to 4 feet building to 7 to 10 feet. Waves occasionally around 13 feet. .THURSDAY...West winds to 30 knots becoming southwest and diminishing to 10 to 15 knots. Waves 7 to 10 feet subsiding to 1 to 3 feet. Waves occasionally around 13 feet. .FRIDAY...South gales to 35 knots becoming southwest. Rain and snow during the day, then a chance of snow showers and rain Friday night. Waves 3 to 5 feet building to 10 to 14 feet. Waves occasionally around 18 feet. .SATURDAY...West winds to 30 knots becoming east and diminishing to 10 to 15 knots. A chance of snow showers Saturday night. Waves 9 to 12 feet subsiding to 3 to 5 feet. Waves occasionally around 15 feet. Winds and waves higher in and near thunderstorms. $$ LOZ063>065-102115- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 137 PM EDT Tue Mar 10 2026 ...GALE WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH THURSDAY MORNING... .THIS AFTERNOON...Northwest winds 5 to 10 knots becoming north. A chance of rain showers late. Waves 2 feet or less. .TONIGHT...Northeast winds 15 to 25 knots. A chance of rain showers. Waves 1 to 3 feet building to 2 to 4 feet. .WEDNESDAY...East winds 15 to 20 knots becoming south. Rain showers with a chance of thunderstorms. Waves 2 to 4 feet subsiding to 1 to 3 feet. .WEDNESDAY NIGHT...South winds 15 to 20 knots becoming west and increasing to 35 knot gales overnight. Rain showers with a chance of thunderstorms in the evening, then rain showers with snow showers likely overnight. Waves 1 to 3 feet building to 8 to 11 feet. Waves occasionally around 14 feet. .THURSDAY...West winds to 30 knots diminishing to 10 to 15 knots. Snow showers likely during the day. Waves 9 to 13 feet subsiding to 3 to 6 feet. Waves occasionally around 16 feet. .FRIDAY...South winds 15 to 25 knots becoming west and increasing to 35 knot gales. Rain with snow likely. Waves 2 to 4 feet building to 13 to 17 feet. Waves occasionally around 22 feet. .SATURDAY...West winds to 30 knots becoming southeast and diminishing to 10 to 15 knots. A chance of snow showers. Waves 13 to 17 feet subsiding to 3 to 6 feet. Waves occasionally around 22 feet. Winds and waves higher in and near thunderstorms. $$ LOZ061-102115- MAFOR 1015/ ONTARIO WEST 1/2 11700 11100 11110 12120 11220 11236 11226. A chance of thunderstorms Wednesday morning. Waves 1 to 2 feet this afternoon. Waves 1 to 3 feet building to 3 to 5 feet tonight. Waves 3 to 5 feet Wednesday morning. ONTARIO EAST 1/2 11510 11800 11110 11120 11130 11120 11220 11216. A chance of thunderstorms Wednesday morning. Waves 2 feet or less this afternoon. Waves 1 to 3 feet building to 2 to 4 feet tonight. Waves 2 to 4 feet subsiding to 1 to 3 feet Wednesday morning. $$