


Great Lakes Forecast
Issued by NWS
Issued by NWS
022 FZUS61 KBUF 030803 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 402 AM EDT Sun Aug 3 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 broad 30.2 inch high will remain in place across the Great Lakes and New England through Monday. Another 30.4 inch high will then build from Quebec Tuesday to New England Wednesday through Thursday before moving east of New England by Friday. LOZ062-031500- Lake Ontario open waters from the Niagara River to Hamlin Beach- 402 AM EDT Sun Aug 3 2025 .TODAY...West winds 5 to 15 knots becoming southwest. Waves 2 feet or less. .TONIGHT...West winds 10 knots or less becoming northwest. Waves 1 foot or less. .MONDAY...Northwest winds less than 10 knots. Waves 1 foot or less. .MONDAY NIGHT...South winds 10 knots or less becoming east. Waves 1 foot or less. .TUESDAY...East winds 5 to 10 knots. Waves 1 foot or less. .WEDNESDAY...East winds 5 to 10 knots becoming south. Waves 2 feet or less. .THURSDAY...South winds 5 to 10 knots. Waves 1 foot or less. $$ LOZ063>065-031500- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 402 AM EDT Sun Aug 3 2025 .TODAY...West winds 5 to 15 knots. Waves 1 to 3 feet. .TONIGHT...West winds 5 to 15 knots diminishing to less than 10 knots. Waves 2 feet or less. .MONDAY...West winds less than 10 knots. Waves 1 foot or less. .MONDAY NIGHT...West winds 10 knots or less becoming east. Waves 1 foot or less. .TUESDAY...East winds 10 knots or less. Waves 1 foot or less. .WEDNESDAY...East winds 10 knots or less becoming southeast. Waves 1 foot or less. .THURSDAY...South winds 5 to 10 knots. Waves 2 feet or less. $$ LOZ061-031500- MAFOR 0309/ ONTARIO WEST 1/2 12600 11610 14600 11600. Waves 2 feet or less. ONTARIO EAST 1/2 12500 11510 12610 13600. Waves 1 to 3 feet today. Waves 2 feet or less tonight. $$