


Great Lakes Forecast
Issued by NWS
Issued by NWS
651 FZUS61 KBUF 090202 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1002 PM EDT Wed Oct 8 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 30.4 inch high will build from the Central Great Lakes tonight to the Lake tomorrow. The high will then drift off the New England coastline Friday, where it will linger through Saturday. Another 30.4 inch high will then build across Quebec on Sunday and Monday...while a deepening 29.4 inch low slowly drifts north offshore of the Carolinas and to the southern mid-Atlantic coastline. LOZ062-090900- Lake Ontario open waters from the Niagara River to Hamlin Beach- 1002 PM EDT Wed Oct 8 2025 .OVERNIGHT...North winds 15 to 20 knots becoming northeast. Waves 3 to 5 feet. .THURSDAY...Northeast winds 5 to 15 knots becoming east. Waves 2 to 4 feet subsiding to 2 feet or less. .THURSDAY NIGHT...East winds 10 knots or less becoming south. Waves 1 foot or less. .FRIDAY...South winds 5 to 10 knots. Waves 1 foot or less. .FRIDAY NIGHT...South winds 5 to 10 knots. A chance of showers overnight. Waves 1 foot or less. .SATURDAY...South winds 5 to 10 knots becoming southeast. A chance of showers during the day. Waves 2 feet or less. .SUNDAY...East winds 10 to 15 knots. Waves 1 to 3 feet. .MONDAY...Northeast winds 10 to 15 knots. Waves 1 to 3 feet. $$ LOZ063>065-090900- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 1002 PM EDT Wed Oct 8 2025 .OVERNIGHT...North winds 15 to 25 knots. Waves 3 to 6 feet. .THURSDAY...North winds 15 to 20 knots becoming northeast 5 to 15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet. .THURSDAY NIGHT...Northeast winds 10 knots or less becoming south 10 to 15 knots. Waves 1 foot or less. .FRIDAY...South winds 5 to 15 knots. Waves 2 feet or less. .FRIDAY NIGHT...South winds 5 to 15 knots. Waves 2 feet or less. .SATURDAY...South winds 5 to 15 knots becoming southeast. Waves 2 feet or less. .SUNDAY...East winds 10 to 15 knots. A chance of showers Sunday night. Waves 1 to 3 feet. .MONDAY...Northeast winds 10 to 15 knots. A chance of showers during the day. Waves 1 to 3 feet. $$ LOZ061-090900- MAFOR 0903/ ONTARIO WEST 1/2 11820 11120 12110 12100 11200 11300. Waves 3 to 5 feet overnight. Waves 2 to 4 feet subsiding to 2 feet or less Thursday. Waves 1 foot or less Thursday evening. ONTARIO EAST 1/2 11830 12820 11810 11110 11800 11100 11200. Waves 3 to 6 feet overnight. Waves 3 to 5 feet subsiding to 1 to 3 feet Thursday. Waves 1 foot or less Thursday evening. $$