Great Lakes Forecast
Issued by NWS
Issued by NWS
548 FZUS61 KBUF 030303 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1002 PM EST Fri Jan 2 2026 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 28.8 inch low will move north across the Canadian Maritimes through tonight, then to northern Quebec by Saturday. A 30.3 inch high will then build from the western Great Lakes Sunday to the lower Great Lakes by early Monday, then drift off the east coast Monday night. A weak trough of low pressure averaging 29.8 inches will cross the Great Lakes Tuesday through Tuesday night, followed by a 30.1 inch high building into the Ohio Valley and lower Great Lakes Wednesday. LOZ062-031000- Lake Ontario open waters from the Niagara River to Hamlin Beach- 1002 PM EST Fri Jan 2 2026 .OVERNIGHT...West winds 15 to 20 knots. Waves 4 to 7 feet. Waves occasionally around 9 feet. .SATURDAY...Northwest winds 15 to 20 knots becoming west 10 to 15 knots. A chance of snow showers. Waves 3 to 6 feet subsiding to 1 to 3 feet. .SATURDAY NIGHT...West winds 10 to 15 knots. Snow showers. Waves 1 to 3 feet. .SUNDAY...Northwest winds 10 to 15 knots increasing to 15 to 20 knots. A chance of snow showers in the morning. Waves 2 to 4 feet. .SUNDAY NIGHT...Northwest winds 15 to 20 knots becoming east and diminishing to less than 10 knots overnight. Waves 2 to 4 feet subsiding to 1 foot or less. .MONDAY...Southeast winds 5 to 15 knots becoming south. Snow showers likely during the day, then a chance of snow showers Monday night. Waves 2 feet or less. .TUESDAY...South winds 5 to 15 knots becoming southwest. A chance of rain showers. Waves 2 feet or less. .WEDNESDAY...Southwest winds 5 to 15 knots. Waves 1 to 3 feet. $$ LOZ063>065-031000- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 1002 PM EST Fri Jan 2 2026 .OVERNIGHT...West winds 15 to 20 knots becoming northwest. Lake effect snow likely. Waves 4 to 7 feet. Waves occasionally around 9 feet. .SATURDAY...Northwest winds 15 to 20 knots diminishing to 5 to 15 knots. A chance of snow showers. Waves 4 to 7 feet subsiding to 1 to 3 feet. Waves occasionally around 9 feet. .SATURDAY NIGHT...Northwest winds 5 to 15 knots becoming north. Snow showers. Waves 1 to 3 feet. .SUNDAY...North winds 10 to 15 knots becoming northwest 15 to 20 knots. Snow showers likely in the morning, then a chance of snow showers in the afternoon. Waves 2 to 4 feet building to 3 to 5 feet. .SUNDAY NIGHT...Northwest winds 15 to 20 knots becoming northeast and diminishing to 5 to 10 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet. .MONDAY...Southeast winds 10 to 15 knots becoming south. A chance of snow showers. Waves 1 to 3 feet. .TUESDAY...South winds 5 to 15 knots becoming southwest. A chance of rain showers during the day, then rain showers likely Tuesday night. Waves 1 to 3 feet. .WEDNESDAY...Southwest winds 15 to 20 knots becoming west 10 to 15 knots. Rain showers likely during the day. Waves 2 to 4 feet subsiding to 1 to 3 feet. $$ LOZ061-031000- MAFOR 0304/ ONTARIO WEST 1/2 12620 12720 11710 12610 11617. Waves 4 to 7 feet, and occasionally around 9 feet overnight. Waves 3 to 6 feet subsiding to 1 to 3 feet Saturday. Waves 1 to 3 feet Saturday evening. ONTARIO EAST 1/2 11627 12727 11720 11710 12700 11707. Waves 4 to 7 feet, and occasionally around 9 feet overnight. Waves 4 to 7 feet subsiding to 1 to 3 feet, and occasionally around 9 feet Saturday. Waves 2 feet or less Saturday evening. $$