FZUS61 KBUF 160220 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1020 PM EDT Mon Apr 15 2024 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...An expansive 30.1 inch will strengthen as it will build southeast across the Great Lakes region through Tuesday. A large storm system will move from the central and northern Plains to the western Great Lakes Tuesday night and Wednesday. The weakening storm system will pass to the north of the Lake Wednesday night and Thursday. The large storm system will slowly cross Quebec Friday and Saturday...while expansive high pressure will move from the Canadian Rockies to the central plains. LOZ062-160915- Lake Ontario open waters from the Niagara River to Hamlin Beach- 1020 PM EDT Mon Apr 15 2024 .OVERNIGHT...West winds 5 to 10 knots. Waves 1 to 3 feet. .TUESDAY...Northwest winds 5 to 10 knots becoming southwest. Waves 2 feet or less. .TUESDAY NIGHT...Northwest winds less than 10 knots becoming east and increasing to 15 to 20 knots overnight. Waves 2 feet or less building to 3 to 5 feet. .WEDNESDAY...East winds to 30 knots. Showers likely in the morning, then showers with a chance of thunderstorms in the afternoon. Waves 5 to 8 feet building to 7 to 11 feet. Waves occasionally around 14 feet. .WEDNESDAY NIGHT...East winds to 30 knots. Showers with a chance of thunderstorms. Waves 6 to 10 feet. Waves occasionally around 13 feet. .THURSDAY...Southeast winds 15 to 20 knots becoming southwest 10 to 15 knots. Occasional showers. Waves 3 to 6 feet subsiding to 1 to 3 feet. .FRIDAY...Southwest winds 10 to 15 knots. A chance of showers. Waves 1 to 3 feet. .SATURDAY...West winds 10 to 15 knots. A chance of showers. Waves 1 to 3 feet. Winds and waves higher in and near thunderstorms. $$ LOZ063>065-160915- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 1020 PM EDT Mon Apr 15 2024 .OVERNIGHT...West winds 10 to 15 knots. Waves 1 to 3 feet. .TUESDAY...West winds 5 to 10 knots. Waves 2 feet or less. .TUESDAY NIGHT...Southwest winds 10 knots or less becoming northeast 10 to 15 knots. Waves 1 to 3 feet. .WEDNESDAY...Northeast winds 15 to 25 knots. A chance of showers in the morning, then showers likely in the afternoon. Waves building to 4 to 7 feet. Waves occasionally around 9 feet. .WEDNESDAY NIGHT...East winds 15 to 25 knots becoming southeast to 30 knots. Showers with a chance of thunderstorms. Waves 3 to 6 feet. .THURSDAY...Southeast winds to 30 knots becoming south and diminishing to 10 to 15 knots. Occasional showers. Waves 4 to 7 feet subsiding to 1 to 3 feet. Waves occasionally around 9 feet. .FRIDAY...Southwest winds 10 to 15 knots. A chance of showers. Waves 1 to 3 feet. .SATURDAY...West winds 10 to 15 knots. A chance of rain showers. Waves 2 to 4 feet. Winds and waves higher in and near thunderstorms. $$ LOZ061-160915- MAFOR 1603/ ONTARIO WEST 1/2 12600 12700 13600 11800. Waves 1 to 3 feet overnight. Waves 2 feet or less Tuesday and Tuesday evening. ONTARIO EAST 1/2 11610 14600 11600 11500 11400. Waves 1 to 3 feet subsiding to 1 foot or less overnight and Tuesday. Waves 1 foot or less Tuesday evening. $$