


Great Lakes Forecast
Issued by NWS
Issued by NWS
950 FZUS61 KBUF 290802 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 402 AM EDT Fri Aug 29 2025 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 29.9 inch elongated low over southern Quebec, has placed a cold front across the southeastern side of the Lake this morning. A 30.2 inch high over the upper Great Lakes will then settle across the Lake later today and into the weekend, before drifting just east of the Lake on Monday. LOZ062-291500- Lake Ontario open waters from the Niagara River to Hamlin Beach- 402 AM EDT Fri Aug 29 2025 .TODAY...North winds 15 to 20 knots becoming northwest 10 to 15 knots. Waves 1 to 3 feet. .TONIGHT...Northwest winds 10 to 15 knots. Waves 1 to 2 feet. .SATURDAY...Northwest winds 5 to 10 knots becoming west. Waves 1 to 2 feet. .SATURDAY NIGHT...Northwest winds 5 to 10 knots. Waves 2 feet or less. .SUNDAY...Northwest winds less than 10 knots. Waves 1 foot or less. .MONDAY...Southeast winds 10 knots or less. Waves 1 foot or less. .TUESDAY...Southeast winds 10 knots or less becoming south. Waves 1 foot or less. $$ LOZ063-291500- Lake Ontario open waters from Hamlin Beach to Sodus Bay- 402 AM EDT Fri Aug 29 2025 .TODAY...Northwest winds 10 to 15 knots. Waves 2 to 4 feet subsiding to 1 to 2 feet. .TONIGHT...Northwest winds 10 to 15 knots. Waves 2 to 3 feet. .SATURDAY...Northwest winds 10 to 15 knots becoming west. Waves around 2 feet. .SATURDAY NIGHT...Northwest winds 5 to 10 knots. Waves 1 to 2 feet. .SUNDAY...Northwest winds 10 knots or less becoming south. Waves 1 foot or less. .MONDAY...Southeast winds less than 10 knots. Waves 1 foot or less. .TUESDAY...South winds 10 knots or less. Waves 1 foot or less. $$ LOZ064-065-291500- Lake Ontario open waters from Sodus Bay to the Saint Lawrence River- 402 AM EDT Fri Aug 29 2025 .TODAY...Northwest winds 10 to 15 knots becoming west. Waves 2 to 4 feet subsiding to 1 to 3 feet. .TONIGHT...Northwest winds 10 to 15 knots. Waves 1 to 3 feet. .SATURDAY...Northwest winds 10 to 15 knots becoming west. Waves 1 to 2 feet. .SATURDAY NIGHT...West winds 5 to 10 knots becoming northwest. Waves 2 feet or less. .SUNDAY...Northwest winds 10 knots or less becoming southeast. Waves 1 foot or less. .MONDAY...Southeast winds less than 10 knots. Waves 1 foot or less. .TUESDAY...South winds 10 knots or less. Waves 1 foot or less. $$ LOZ061-291500- MAFOR 2909/ ONTARIO WEST 1/2 11810 15710 11700. Waves 2 to 4 feet subsiding to 1 to 2 feet today. Waves 1 to 3 feet tonight. ONTARIO EAST 1/2 11810 15710 11700. Waves 2 to 4 feet subsiding to 1 to 3 feet today. Waves 1 to 3 feet tonight. $$