Great Lakes Forecast
Issued by NWS
Issued by NWS
446 FZUS61 KBUF 020802 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 402 AM EDT Fri Oct 2 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 30.3 inch high will build east across the lower Great Lakes region today through Saturday, before sliding northeast into northern New England Saturday night. A 29.7 inch low over northwestern Ontario Sunday will deepen to 29.4 inches as it slides just south of James Bay into central Quebec Sunday night, while sending a pair of cold fronts across the Lake. A 30.2 inch high over the upper Midwest will then build across the Great Lakes region Monday into Tuesday. LOZ062-021500- Lake Ontario open waters from the Niagara River to Hamlin Beach- 402 AM EDT Fri Oct 2 2026 .TODAY...Northwest winds 10 to 15 knots increasing to 15 to 20 knots. Showers this morning. Waves 1 to 3 feet. .TONIGHT...Northwest winds 15 to 20 knots becoming north 10 to 15 knots. Waves 2 to 4 feet building to 3 to 5 feet, then subsiding to 1 to 3 feet. .SATURDAY...Northeast winds 5 to 10 knots becoming east. Waves 2 feet or less. .SATURDAY NIGHT...East winds 5 to 10 knots becoming southeast. Waves 1 foot or less. .SUNDAY...Southeast winds 5 to 10 knots becoming west and increasing to 15 to 20 knots. Waves 1 foot or less building to 3 to 6 feet. .MONDAY...Northwest winds 15 to 25 knots. Waves 3 to 6 feet building to 4 to 7 feet, then subsiding to 2 to 4 feet. Waves occasionally around 9 feet. .TUESDAY...Northwest winds 5 to 15 knots becoming southwest. Waves 2 feet or less. $$ LOZ063>065-021500- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 402 AM EDT Fri Oct 2 2026 .TODAY...West winds 10 to 15 knots increasing to 15 to 20 knots. Showers this morning. Waves 1 to 3 feet building to 2 to 4 feet. .TONIGHT...West winds 15 to 20 knots becoming north. Waves 3 to 5 feet subsiding to 2 to 4 feet. .SATURDAY...Northeast winds 5 to 15 knots. Waves 1 to 3 feet subsiding to 1 foot or less. .SATURDAY NIGHT...Northeast winds 5 to 10 knots becoming southeast. Waves 1 foot or less. .SUNDAY...Southeast winds 15 to 25 knots becoming west. A chance of showers Sunday night. Waves 1 to 3 feet building to 3 to 6 feet. .MONDAY...Northwest winds to 30 knots diminishing to 15 to 20 knots. Waves 5 to 9 feet subsiding to 3 to 6 feet. Waves occasionally around 11 feet. .TUESDAY...Northwest winds 15 to 20 knots becoming southwest and diminishing to 5 to 10 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet. $$ LOZ061-021500- MAFOR 0209/ ONTARIO WEST 1/2 12716 11610 11620 13720 11810. Waves 1 to 3 feet building to 2 to 4 feet today. Waves 2 to 4 feet tonight. ONTARIO EAST 1/2 11616 11716 11610 12620 11720 12820. Waves 1 to 3 feet building to 2 to 4 feet today. Waves 3 to 5 feet subsiding to 2 to 4 feet tonight. $$