Great Lakes Forecast
Issued by NWS
Issued by NWS
194 FZUS61 KBUF 061503 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1002 AM 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. LOZ062-063-062200- Lake Ontario open waters from the Niagara River to Sodus Bay- 1002 AM EST Fri Mar 6 2026 .THIS AFTERNOON...East winds 15 to 20 knots diminishing to 10 to 15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet. .TONIGHT...East winds 10 to 15 knots becoming south and increasing to 15 to 25 knots. A chance of rain showers late in the evening. Rain showers with a chance of thunderstorms after midnight. Waves 1 to 3 feet building to 3 to 5 feet. .SATURDAY...South winds 15 to 25 knots becoming southwest to 30 knots. A chance of showers in the morning, then 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 with a chance of thunderstorms in the evening, then a chance of rain showers 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. .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...Northwest winds 10 to 15 knots becoming east 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. Winds and waves higher in and near thunderstorms. $$ LOZ064-065-062200- Lake Ontario open waters from Sodus Bay to the Saint Lawrence River- 1002 AM EST Fri Mar 6 2026 .THIS AFTERNOON...East winds 10 to 15 knots becoming southeast. Waves 2 feet or less. .TONIGHT...Southeast winds 15 to 25 knots becoming south to 30 knots. Rain showers after midnight. Waves 1 to 3 feet building to 3 to 6 feet. .SATURDAY...South winds 15 to 25 knots. A chance of rain showers and thunderstorms in the morning, then rain showers with a chance of thunderstorms in the afternoon. Waves 3 to 6 feet. .SATURDAY NIGHT...Southwest winds 15 to 20 knots becoming west. Rain showers with a chance of thunderstorms in the evening, then rain showers likely overnight. Waves 3 to 6 feet. .SUNDAY...West winds 15 to 20 knots becoming south. Waves 3 to 6 feet subsiding to 2 to 4 feet. .MONDAY...South winds 15 to 20 knots becoming west 10 to 15 knots. Waves 2 to 4 feet. .TUESDAY...West winds 5 to 10 knots becoming northeast and increasing to 15 to 25 knots. A chance of rain showers during the day, then rain showers Tuesday night. Waves 1 to 3 feet building to 3 to 6 feet. Winds and waves higher in and near thunderstorms. $$ LOZ061-062200- MAFOR 0616/ ONTARIO WEST 1/2 11210 12200 11210 11410 11516 11526 11520. Waves 3 to 5 feet subsiding to 1 to 3 feet this afternoon. Waves 1 to 3 feet tonight. Waves 2 to 4 feet building to 3 to 5 feet Saturday morning. ONTARIO EAST 1/2 11210 11310 12320 11336 11436 12430. Waves 2 to 4 feet subsiding to 1 to 3 feet this afternoon. Waves 1 to 3 feet building to 3 to 6 feet tonight. Waves 3 to 6 feet Saturday morning. $$