Great Lakes Forecast
Issued by NWS
Issued by NWS
711 FZUS61 KBUF 080902 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 402 AM EST Sat Nov 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...29.9 inch high pressure over Ontario Province will briefly build southeast across the lake today. Another 29.8 inch surface low will deepen to 29.5 inches as it tracks from the Ohio Valley to New England Sunday and Monday, then will strengthen further while moving north across Quebec Tuesday. Another 29.2 inch low will move north of the Great Lakes region Wednesday. LOZ062-081600- Lake Ontario open waters from the Niagara River to Hamlin Beach- 402 AM EST Sat Nov 8 2025 .TODAY...Northwest winds 15 to 20 knots diminishing to 5 to 15 knots. Waves 4 to 7 feet subsiding to 1 to 3 feet. Waves occasionally around 9 feet. .TONIGHT...North winds 5 to 15 knots becoming northeast 15 to 20 knots. Rain after midnight. Waves 1 to 2 feet building to 2 to 4 feet. .SUNDAY...Northeast winds to 30 knots. Rain in the morning, then rain and snow in the afternoon. Waves 5 to 8 feet. Waves occasionally around 10 feet. .SUNDAY NIGHT...North winds 15 to 25 knots. Rain and snow in the evening, then snow overnight. Waves 5 to 8 feet subsiding to 3 to 5 feet. Waves occasionally around 10 feet. .MONDAY...Northwest winds 15 to 25 knots becoming west. A chance of snow showers during the day, then snow showers likely Monday night. Waves 3 to 6 feet. .TUESDAY...West gales to 35 knots becoming southwest and diminishing to 30 knots. Snow and rain showers likely during the day, then rain showers Tuesday night. Waves 7 to 10 feet building to 8 to 12 feet. Waves occasionally around 15 feet. .WEDNESDAY...West gales to 40 knots diminishing to 30 knots. Showers. Waves 10 to 14 feet subsiding to 7 to 10 feet. Waves occasionally around 18 feet. $$ LOZ063>065-081600- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 402 AM EST Sat Nov 8 2025 .TODAY...West winds 15 to 25 knots becoming northwest and diminishing to 5 to 15 knots. Waves 6 to 9 feet subsiding to 1 to 3 feet. Waves occasionally around 11 feet. .TONIGHT...North winds 5 to 15 knots becoming northeast 15 to 20 knots. A chance of rain late in the evening. Rain after midnight. Waves 2 feet or less building to 2 to 4 feet. .SUNDAY...Northeast winds 15 to 25 knots increasing to 30 knots. Rain. Waves 3 to 6 feet building to 5 to 8 feet. Waves occasionally around 10 feet. .SUNDAY NIGHT...Northeast winds to 30 knots becoming northwest and diminishing to 15 to 20 knots. Rain and snow. Waves 5 to 8 feet subsiding to 3 to 6 feet. Waves occasionally around 10 feet. .MONDAY...Northwest winds 15 to 25 knots becoming west. Snow showers with rain showers likely during the day, then snow showers Monday night. Waves 3 to 5 feet building to 5 to 8 feet. Waves occasionally around 10 feet. .TUESDAY...West gales to 35 knots becoming southwest and diminishing to 30 knots. Rain and snow showers. Waves 10 to 14 feet. Waves occasionally around 18 feet. .WEDNESDAY...Southwest gales to 35 knots becoming west and diminishing to 30 knots. Rain showers. Waves 9 to 12 feet building to 10 to 15 feet. Waves occasionally around 19 feet. $$ LOZ061-081600- MAFOR 0810/ ONTARIO WEST 1/2 11730 11720 11710 11700 11800 11100 11110 11126. Waves 5 to 8 feet subsiding to 1 to 3 feet, and occasionally around 10 feet today. Waves 1 to 3 feet tonight. ONTARIO EAST 1/2 11630 11720 12710 11800 11100 11210 11126. Waves 6 to 9 feet subsiding to 1 to 3 feet, and occasionally around 11 feet today. Waves 1 to 3 feet tonight. $$