


Great Lakes Forecast
Issued by NWS
Issued by NWS
788 FZUS61 KBUF 241401 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1001 AM EDT Sat May 24 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 29.7 inch low will drift slowly from Maine to New Brunswick through tonight. This weak low will then move slowly east across the Canadian Maritimes Sunday, then into the North Atlantic Monday. An expansive 30.4 inch high will then settle into the Great Lakes Monday, and expand to southern New England by Tuesday before drifting off the southern New England coast Wednesday. A dissipating 29.9 inch low will track just north of the lake on Thursday, increasing the potential for showers. LOZ062-242100- Lake Ontario open waters from the Niagara River to Hamlin Beach- 1001 AM EDT Sat May 24 2025 .REST OF TODAY...West winds 10 to 15 knots. Showers likely late this morning, then scattered showers early this afternoon. Showers likely late. Waves 1 to 3 feet. .TONIGHT...West winds 10 to 15 knots. Scattered showers in the evening. Waves 2 to 3 feet. .SUNDAY...West winds 10 to 15 knots. A chance of showers in the afternoon. Waves 1 to 3 feet. .SUNDAY NIGHT...West winds 5 to 10 knots. A chance of showers in the evening. Waves 1 to 2 feet. .MONDAY...West winds 5 to 10 knots becoming northwest. Waves 1 foot or less. .TUESDAY...Northeast winds 5 to 15 knots becoming east. Waves 2 feet or less. .WEDNESDAY...East winds 10 to 15 knots becoming southeast. A chance of showers. Waves 1 to 3 feet. $$ LOZ063>065-242100- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 1001 AM EDT Sat May 24 2025 .REST OF TODAY...West winds 10 to 15 knots increasing to 15 to 20 knots. Occasional showers. Waves 1 to 3 feet building to 2 to 4 feet. .TONIGHT...West winds 15 to 20 knots. Showers likely early, then scattered showers late in the evening. Waves 2 to 4 feet. .SUNDAY...West winds 10 to 15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet. .SUNDAY NIGHT...West winds 5 to 15 knots. Waves 1 to 3 feet. .MONDAY...West winds 10 knots or less becoming southwest. Waves 2 feet or less. .TUESDAY...South winds 5 to 10 knots becoming southeast. Waves 1 foot or less. .WEDNESDAY...Southeast winds 5 to 10 knots. A chance of showers. Waves 2 feet or less. $$ LOZ061-242100- MAFOR 2415/ ONTARIO WEST 1/2 13610 19616 14610 11600. Waves 1 to 3 feet this afternoon. Waves 2 to 4 feet tonight. Waves 1 to 3 feet Sunday morning. ONTARIO EAST 1/2 11610 19616 12616 11610 19616 14610. Waves 1 to 3 feet building to 2 to 4 feet this afternoon. Waves 2 to 4 feet tonight. Waves 2 to 4 feet subsiding to 1 to 3 feet Sunday morning. $$