


Great Lakes Forecast
Issued by NWS
Issued by NWS
203 FZUS61 KBUF 101402 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1002 AM EDT Fri Oct 10 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 drift off the New England coast today. A weak 30.0 inch low will then move southeast across the Great Lakes tonight through Saturday before weakening to a remnant trough Saturday night across Western NY. Another 30.4 inch high will then build from Quebec Saturday night to the Canadian Maritimes Sunday, where it will remain in place through Tuesday. Meanwhile, a 29.5 inch low will drift from just offshore of the Carolinas Sunday to off the Jersey shore by Monday night. LOZ062-102100- Lake Ontario open waters from the Niagara River to Hamlin Beach- 1002 AM EDT Fri Oct 10 2025 .THIS AFTERNOON...South winds 5 to 15 knots. Waves 2 feet or less. .TONIGHT...South winds 10 to 15 knots. A chance of showers after midnight. Showers likely late. Waves 1 to 3 feet. .SATURDAY...South winds 10 to 15 knots becoming east. Showers likely. Waves 1 to 3 feet. .SATURDAY NIGHT...East winds 15 to 20 knots. Showers likely. Waves 2 to 4 feet. .SUNDAY...East winds 15 to 20 knots. Showers likely during the day, then a chance of showers Sunday night. Waves 3 to 6 feet. .MONDAY...East winds 15 to 20 knots becoming northeast 5 to 15 knots. A chance of showers during the day. Waves 3 to 6 feet subsiding to 1 to 3 feet. .TUESDAY...North winds 10 knots or less becoming northwest 10 to 15 knots. A chance of showers Tuesday night. Waves 2 feet or less. $$ LOZ063>065-102100- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 1002 AM EDT Fri Oct 10 2025 .THIS AFTERNOON...South winds 10 to 15 knots. Waves 1 to 3 feet. .TONIGHT...South winds 15 to 20 knots. Waves 1 to 3 feet building to 3 to 5 feet. .SATURDAY...South winds 15 to 20 knots becoming southeast 10 to 15 knots. A chance of showers. Waves 2 to 4 feet subsiding to 1 to 3 feet. .SATURDAY NIGHT...East winds 15 to 20 knots. A chance of showers. Waves 1 to 3 feet building to 2 to 4 feet. .SUNDAY...East winds 15 to 20 knots. A chance of showers. Waves 3 to 6 feet. .MONDAY...Northeast winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of showers. Waves 3 to 6 feet subsiding to 1 to 3 feet. .TUESDAY...North winds 5 to 15 knots. A chance of showers. Waves 1 to 3 feet. $$ LOZ061-102100- MAFOR 1015/ ONTARIO WEST 1/2 14410 11420 12410 11416. Waves 2 feet or less this afternoon. Waves 1 to 3 feet tonight and Saturday morning. ONTARIO EAST 1/2 12410 15420. A chance of showers Saturday morning. Waves 1 to 3 feet this afternoon. Waves 1 to 3 feet building to 3 to 5 feet tonight. Waves 2 to 4 feet Saturday morning. $$