FZUS61 KBUF 141411 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1011 AM EDT Tue Apr 14 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 29.6 inch low near Lake Huron will move to the the Saint Lawrence valley by this evening while weakening. Another 29.6 inch low will move into the central Great Lakes Wednesday night before reaching southern Quebec Thursday night, then drifting off the New England coast by Friday night. A 30.0 inch high is then forecast to build from the central Great Lakes Friday to the lower Great Lakes Saturday morning, then off the east coast Saturday night. LOZ062-142100- Lake Ontario open waters from the Niagara River to Hamlin Beach- 1011 AM EDT Tue Apr 14 2026 .REST OF TODAY...South winds 15 to 20 knots becoming southwest. Areas of fog. Showers with a chance of thunderstorms late this morning, then a chance of showers and thunderstorms this afternoon. Waves 1 to 2 feet building to 2 to 4 feet. .TONIGHT...West winds 5 to 15 knots becoming east. Showers with a chance of thunderstorms late. Waves 2 to 4 feet subsiding to 1 to 3 feet. .WEDNESDAY...Southeast winds 10 to 15 knots becoming southwest. Showers with a chance of thunderstorms in the morning, then showers likely in the afternoon. Waves 1 to 2 feet. .WEDNESDAY NIGHT...Southwest winds 5 to 15 knots. Showers with a chance of thunderstorms. Waves 1 to 2 feet. .THURSDAY...Southwest winds 10 to 15 knots becoming west. Showers. Waves 1 to 3 feet. .FRIDAY...Northwest winds 5 to 10 knots becoming east. A chance of showers during the day. Waves 2 feet or less. .SATURDAY...Southeast winds 5 to 15 knots becoming southwest and increasing to 15 to 25 knots. A chance of showers during the day, then showers likely Saturday night. Waves 1 to 3 feet building to 3 to 6 feet. Winds and waves higher in and near thunderstorms. $$ LOZ063>065-142100- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 1011 AM EDT Tue Apr 14 2026 .REST OF TODAY...Southeast winds 10 to 15 knots becoming southwest 15 to 20 knots. Areas of fog. Showers with a chance of thunderstorms. Waves 2 feet or less building to 2 to 4 feet. .TONIGHT...West winds 5 to 15 knots becoming east. A chance of showers and thunderstorms late. Waves 2 to 4 feet subsiding to 1 to 3 feet. .WEDNESDAY...Southeast winds 5 to 10 knots becoming west. Showers with a chance of thunderstorms. Waves 2 feet or less. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Showers likely with a chance of thunderstorms. Waves 1 foot or less. .THURSDAY...Southwest winds 5 to 10 knots becoming west. Showers likely during the day, then a chance of showers Thursday night. Waves 2 feet or less. .FRIDAY...Northwest winds 5 to 10 knots becoming east. A chance of showers. Waves 2 feet or less. .SATURDAY...Southeast winds 10 to 15 knots becoming southwest and increasing to 30 knots. A chance of showers during the day, then showers likely Saturday night. Waves 1 to 3 feet building to 4 to 7 feet. Waves occasionally around 9 feet. Winds and waves higher in and near thunderstorms. $$ LOZ061-142100- MAFOR 1415/ ONTARIO WEST 1/2 11420 12520 11610 11400 11300 11216 11416. A chance of thunderstorms late this morning, overnight, and Wednesday morning. Waves 1 to 2 feet building to 2 to 4 feet this afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet tonight. Waves 1 to 2 feet Wednesday morning. ONTARIO EAST 1/2 11416 11510 12610 11700 11200 11300 11306. A chance of thunderstorms this afternoon and Wednesday morning. Waves 1 to 3 feet this afternoon and tonight. Waves 1 foot or less Wednesday morning. $$