Great Lakes Forecast
Issued by NWS
Issued by NWS
912 FZUS61 KBUF 030903 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 402 AM EST Tue Nov 3 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 30.4 inch high just off the mid Atlantic coastline will continue to slowly drift further offshore through today. A 29.5 inch low is then forecast to move very slowly from the upper Mississippi Valley Tuesday to the upper Great Lakes by Wednesday, and then across Quebec Thursday and Friday. Following the passage of the low, a 29.9 inch troughing will linger across the Lower Great Lakes Saturday. LOZ062-031600- Lake Ontario open waters from the Niagara River to Hamlin Beach- 403 AM EST Tue Nov 3 2026 .TODAY...South winds 5 to 15 knots becoming southwest. A chance of showers early. Waves 2 feet or less. .TONIGHT...South winds 5 to 10 knots. Waves 2 feet or less. .WEDNESDAY...South winds 10 knots or less becoming east. Waves 1 foot or less. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots becoming south. Showers. Waves 1 to 3 feet. .THURSDAY...Southwest winds 15 to 20 knots diminishing to 5 to 15 knots. Showers during the day. Waves 1 to 3 feet. .FRIDAY...West winds 10 knots or less becoming north 10 to 15 knots. A chance of showers Friday night. Waves 2 feet or less. .SATURDAY...North winds 10 to 15 knots becoming northwest. A chance of showers. Waves 1 to 2 feet. $$ LOZ063>065-031600- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 403 AM EST Tue Nov 3 2026 .TODAY...South winds 10 to 15 knots. A chance of showers this morning. Waves 2 feet or less. .TONIGHT...South winds 10 to 15 knots. Waves 1 to 3 feet. .WEDNESDAY...South winds 5 to 15 knots becoming southeast. Waves 1 to 3 feet. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots becoming south 15 to 20 knots. A chance of showers in the evening, then showers overnight. Waves 1 to 3 feet building to 2 to 4 feet. .THURSDAY...South winds 15 to 20 knots becoming southwest 5 to 15 knots. Showers during the day. Waves 2 to 4 feet subsiding to 1 foot or less. .FRIDAY...Southwest winds 10 knots or less becoming north 10 to 15 knots. A chance of showers Friday night. Waves 2 feet or less. .SATURDAY...North winds 10 to 15 knots becoming northwest. A chance of showers. Waves 1 to 3 feet. $$ LOZ061-031600- MAFOR 0310/ ONTARIO WEST 1/2 11400 11410 12510 12400 12410. Waves 2 feet or less. ONTARIO EAST 1/2 16410. A chance of showers this morning. Waves 2 feet or less today. Waves 1 to 3 feet tonight. $$