Great Lakes Forecast
Issued by NWS
Issued by NWS
359 FZUS61 KBUF 232003 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 402 PM EDT Fri Oct 23 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 30.6 inch high will drift slowly east across New England Saturday and then settle southward into the Mid Atlantic Sunday through Monday while weakening to 30.4 inches. A cold front will move southeast across the lake Monday. Another 30.6 inch high will then build from northwest Ontario province Monday night to Quebec by Tuesday night, then off the New England coast by Wednesday night. LOZ062-240300- Lake Ontario open waters from the Niagara River to Hamlin Beach- 402 PM EDT Fri Oct 23 2026 .TONIGHT...East winds 15 to 20 knots becoming southeast 5 to 15 knots. Waves 1 to 3 feet. .SATURDAY...Southeast winds 10 knots or less becoming east. Waves 1 foot or less. .SATURDAY NIGHT...East winds 5 to 10 knots becoming southwest. Waves 1 foot or less. .SUNDAY...Southwest winds 5 to 10 knots. Waves 1 foot or less. .SUNDAY NIGHT...South winds 5 to 10 knots becoming southwest. Waves 2 feet or less. .MONDAY...West winds 5 to 15 knots becoming northeast. Waves 1 to 3 feet. .TUESDAY...Northeast winds 5 to 15 knots becoming east. Waves 1 to 3 feet. .WEDNESDAY...East winds 5 to 15 knots becoming south. Waves 1 to 2 feet. $$ LOZ063>065-240300- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 402 PM EDT Fri Oct 23 2026 .TONIGHT...Northeast winds 5 to 15 knots becoming southeast less than 10 knots. Waves 1 to 3 feet subsiding to 1 foot or less. .SATURDAY...Southeast winds less than 10 knots becoming east. Waves 1 foot or less. .SATURDAY NIGHT...East winds 10 knots or less becoming south. Waves 2 feet or less. .SUNDAY...South winds 5 to 15 knots. Waves 2 feet or less. .SUNDAY NIGHT...South winds 10 knots or less becoming southwest. Waves 2 feet or less. .MONDAY...Southwest winds 5 to 10 knots becoming northeast and increasing to 15 to 20 knots. Waves 1 to 3 feet building to 2 to 4 feet. .TUESDAY...Northeast winds 15 to 20 knots becoming east 5 to 15 knots. Waves 2 to 4 feet subsiding to 1 foot or less. .WEDNESDAY...Southeast winds 5 to 15 knots becoming south 15 to 20 knots. Waves 1 to 3 feet. $$ LOZ061-240300- MAFOR 2321/ ONTARIO WEST 1/2 13210 14300 11200. Waves 1 to 3 feet tonight. Waves 1 foot or less Saturday. ONTARIO EAST 1/2 12110 11210 12300 12400 11200. Waves 1 to 3 feet subsiding to 1 foot or less tonight. Waves 1 foot or less Saturday. $$