Great Lakes Forecast
Issued by NWS
Issued by NWS
405 FZUS61 KBUF 201937 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 337 PM EDT Fri Sep 20 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...A 30.3 high will remain across the Gulf of Saint Lawrence tonight. A weakening 29.8 inch trough will then slowly drift across Lake Ontario Saturday, with weak high pressure averaging 30.0 inches then lingering across the lake on Sunday. A low will then deepen to 29.5 inches over southwest Hudson Bay later Sunday through Monday. An associated cold front trailing this low will move into the lower Great Lakes Monday, and then stall over the region through the middle of next week. LOZ062-210315- Lake Ontario open waters from the Niagara River to Hamlin Beach- 337 PM EDT Fri Sep 20 2024 .TONIGHT...East winds 5 to 15 knots becoming southeast. Waves 1 to 2 feet. .SATURDAY...Southeast winds 5 to 10 knots becoming east. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Waves 2 feet or less. .SATURDAY NIGHT...East winds 5 to 10 knots. Showers likely with a chance of thunderstorms in the evening, then a chance of showers overnight. Waves 1 to 2 feet. .SUNDAY...East winds 5 to 15 knots. Waves 1 to 2 feet. .SUNDAY NIGHT...East winds 10 to 15 knots becoming southeast. A chance of showers overnight. Waves 1 to 2 feet. .MONDAY...Southeast winds 10 to 15 knots. A chance of showers during the day, then showers likely Monday night. Waves 1 to 3 feet. .TUESDAY...Southeast winds 10 to 15 knots becoming south. Showers likely. Waves 1 to 3 feet. .WEDNESDAY...South winds 5 to 15 knots becoming southwest. Showers likely during the day, then a chance of showers Wednesday night. Waves 1 to 2 feet. Winds and waves higher in and near thunderstorms. $$ LOZ063>065-210315- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 337 PM EDT Fri Sep 20 2024 .TONIGHT...East winds 5 to 15 knots becoming southeast. Waves 1 to 3 feet. .SATURDAY...Southeast winds 15 to 20 knots becoming east 5 to 15 knots. A chance of showers early in the afternoon. Showers likely with a chance of thunderstorms late. Waves 1 to 3 feet. .SATURDAY NIGHT...East winds 5 to 15 knots becoming southeast. Showers likely with a chance of thunderstorms in the evening, then a chance of showers overnight. Waves 2 feet or less. .SUNDAY...Southeast winds 5 to 15 knots. Waves 2 feet or less. .SUNDAY NIGHT...Southeast winds 10 to 15 knots increasing to 15 to 20 knots. Waves 1 to 3 feet building to 2 to 4 feet. .MONDAY...Southeast winds 15 to 20 knots. A chance of showers during the day, then showers likely Monday night. Waves 2 to 4 feet. .TUESDAY...Southeast winds 15 to 20 knots. Showers likely during the day, then showers Tuesday night. Waves 2 to 4 feet building to 3 to 5 feet. .WEDNESDAY...Southeast winds 15 to 20 knots becoming south 10 to 15 knots. Showers during the day, then a chance of showers Wednesday night. Waves 3 to 5 feet subsiding to 1 to 3 feet. Winds and waves higher in and near thunderstorms. $$ LOZ061-210315- MAFOR 2021/ ONTARIO WEST 1/2 13210 14310 11206. A chance of thunderstorms Saturday afternoon. Waves 1 to 3 feet. ONTARIO EAST 1/2 11100 11200 14310 11310 11300. A chance of showers Saturday afternoon. Waves 1 to 3 feet. $$