Great Lakes Forecast
Issued by NWS
Issued by NWS
670 FZUS61 KBUF 161502 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1002 AM EST Sun Nov 16 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...Low pressure will deepen further to 28.8 inches over northern New England today before moving to the Canadian Maritimes Monday, then north to Labrador Tuesday. A 30.3 inch high will then build from the upper Great Lakes Tuesday to the lower Great Lakes Wednesday, then to New England Thursday. LOZ062-162200- Lake Ontario open waters from the Niagara River to Hamlin Beach- 1002 AM EST Sun Nov 16 2025 ...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... .REST OF TODAY...Northwest gales to 35 knots. A chance of rain showers, then lake effect rain and snow showers likely late. Waves 10 to 14 feet. Waves occasionally around 18 feet. .TONIGHT...Northwest winds to 30 knots. A chance of snow and rain showers early, then a chance of snow showers from late evening on. Waves 7 to 11 feet subsiding to 6 to 9 feet. Waves occasionally around 14 feet. .MONDAY...Northwest winds to 30 knots becoming west. A chance of snow showers. Waves 5 to 9 feet. Waves occasionally around 11 feet. .MONDAY NIGHT...West winds 15 to 25 knots becoming northwest. Waves 4 to 7 feet subsiding to 3 to 6 feet. Waves occasionally around 9 feet. .TUESDAY...Northwest winds 15 to 20 knots becoming northeast 5 to 15 knots. Waves 2 to 4 feet subsiding to 1 foot or less. .WEDNESDAY...East winds 5 to 10 knots. Waves 1 foot or less. .THURSDAY...Northeast winds 10 knots or less becoming southeast 10 to 15 knots. Showers Thursday night. Waves 2 feet or less. $$ LOZ063-162200- Lake Ontario open waters from Hamlin Beach to Sodus Bay- 1002 AM EST Sun Nov 16 2025 ...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... .REST OF TODAY...Northwest gales to 35 knots. A chance of rain showers late this morning. A chance of rain and snow showers late. Waves 12 to 16 feet. Waves occasionally around 20 feet. .TONIGHT...Northwest gales to 35 knots diminishing to 30 knots. A chance of snow and rain showers early. Waves 10 to 14 feet subsiding to 8 to 11 feet. Waves occasionally around 18 feet. .MONDAY...Northwest winds to 30 knots becoming west. A chance of snow showers in the morning, then a chance of rain and snow showers in the afternoon. Waves 7 to 11 feet. Waves occasionally around 14 feet. .MONDAY NIGHT...Northwest winds to 30 knots diminishing to 15 to 20 knots. A chance of rain and snow showers in the evening, then a chance of rain showers overnight. Waves 6 to 10 feet subsiding to 5 to 8 feet. Waves occasionally around 13 feet. .TUESDAY...Northwest winds 15 to 20 knots diminishing to 5 to 15 knots. Waves 3 to 6 feet subsiding to 1 to 3 feet. .WEDNESDAY...East winds 5 to 10 knots becoming southeast. Waves 1 foot or less. .THURSDAY...East winds 10 knots or less becoming southeast and increasing to 15 to 20 knots. Showers likely Thursday night. Waves 1 foot or less building to 1 to 3 feet. $$ LOZ064-065-162200- Lake Ontario open waters from Sodus Bay to the Saint Lawrence River- 1002 AM EST Sun Nov 16 2025 ...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... .REST OF TODAY...Northwest gales to 35 knots. A chance of rain showers late this morning. A chance of rain and snow showers late. Waves 12 to 16 feet. Waves occasionally around 20 feet. .TONIGHT...Northwest gales to 35 knots. A chance of snow and rain showers early, then a chance of snow showers from late evening on. Waves 10 to 15 feet subsiding to 8 to 11 feet. Waves occasionally around 19 feet. .MONDAY...Northwest winds to 30 knots becoming west. A chance of snow showers in the morning. Waves 7 to 11 feet. Waves occasionally around 14 feet. .MONDAY NIGHT...Northwest winds to 30 knots diminishing to 15 to 25 knots. Waves 6 to 10 feet subsiding to 5 to 8 feet. Waves occasionally around 13 feet. .TUESDAY...Northwest winds 15 to 20 knots becoming north 5 to 15 knots. Waves 4 to 7 feet subsiding to 2 feet or less. Waves occasionally around 9 feet. .WEDNESDAY...East winds 10 knots or less becoming southeast. Waves 1 foot or less. .THURSDAY...Southeast winds 5 to 10 knots increasing to 15 to 20 knots. A chance of rain showers during the day, then rain showers likely Thursday night. Waves 1 foot or less building to 1 to 3 feet. $$ LOZ061-162200- MAFOR 1616/ ONTARIO WEST 1/2...GALE WARNING IN EFFECT...12750 14740 11740 11730. A chance of rain showers late this morning, then a chance of rain and snow showers this afternoon. A chance of snow and rain showers this evening, then a chance of snow showers overnight. A chance of snow showers Monday morning. Waves 10 to 15 feet, and occasionally around 19 feet this afternoon. Waves 8 to 12 feet subsiding to 7 to 10 feet, and occasionally around 15 feet tonight. Waves 6 to 9 feet, and occasionally around 11 feet Monday morning. ONTARIO EAST 1/2...GALE WARNING IN EFFECT...14750 14740. Waves 12 to 16 feet, and occasionally around 20 feet this afternoon. Waves 10 to 15 feet subsiding to 8 to 11 feet, and occasionally around 19 feet tonight. Waves 7 to 11 feet, and occasionally around 14 feet Monday morning. $$