FZUS61 KBUF 040303 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1003 PM EST Tue Mar 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 30.2 inch area of high pressure over the Upper Great Lakes this evening will shift southeastward across Lower Great Lakes late tonight and tomorrow morning before moving off the New England coast Wednesday night. A 30.0 inch low is then forecast to move from the mid Mississippi Valley Wednesday night to near Lake Erie Thursday, and then move eastward south of the Lake Thursday night before weakening across southern New England Friday. Another 29.6 inch low will move through the central Great Lakes Saturday, with the trailing cold front crossing the lake Saturday night. Thereafter, a 30.2 inch broad area of high pressure will slide south of the Lake Sunday. LOZ062-063-041000- Lake Ontario open waters from the Niagara River to Sodus Bay- 1003 PM EST Tue Mar 3 2026 .OVERNIGHT...West winds 5 to 10 knots. Patchy fog. Waves 1 foot or less. .WEDNESDAY...West winds 10 knots or less becoming northeast. Patchy fog early. Waves 1 foot or less. .WEDNESDAY NIGHT...East winds 10 knots or less. Waves 1 foot or less. .THURSDAY...East winds 10 to 15 knots becoming northeast 15 to 20 knots. A chance of rain showers in the afternoon. Waves 1 to 3 feet building to 3 to 5 feet. .THURSDAY NIGHT...Northeast winds 15 to 20 knots. Rain showers. Waves 3 to 5 feet subsiding to 2 to 4 feet. .FRIDAY...Northeast winds 5 to 15 knots becoming south 15 to 20 knots. Rain showers likely Friday night. Waves 2 to 4 feet building to 3 to 5 feet. .SATURDAY...Southwest winds 15 to 25 knots becoming west. Rain showers. Waves 3 to 6 feet. .SUNDAY...West winds 15 to 25 knots becoming southwest. Waves 3 to 6 feet. $$ LOZ064-065-041000- Lake Ontario open waters from Sodus Bay to the Saint Lawrence River- 1003 PM EST Tue Mar 3 2026 .OVERNIGHT...Southwest winds 5 to 10 knots becoming northwest. Areas of fog. Waves 1 foot or less. .WEDNESDAY...West winds 5 to 10 knots becoming south. Patchy fog early. Waves 1 foot or less. .WEDNESDAY NIGHT...Southeast winds 10 knots or less becoming east. Waves 1 foot or less. .THURSDAY...Northeast winds 5 to 15 knots increasing to 15 to 20 knots. A chance of rain showers in the afternoon. Waves 1 to 3 feet. .THURSDAY NIGHT...Northeast winds 15 to 20 knots becoming east. Rain showers. Waves 1 to 3 feet. .FRIDAY...East winds 10 to 15 knots becoming south and increasing to 15 to 25 knots. Rain showers likely. Waves 1 to 3 feet building to 3 to 5 feet. .SATURDAY...South winds 15 to 25 knots becoming west. Rain showers. Waves 3 to 6 feet. .SUNDAY...West winds 15 to 20 knots becoming southwest. Waves 3 to 6 feet building to 4 to 7 feet. Waves occasionally around 9 feet. $$ LOZ061-041000- MAFOR 0404/ ONTARIO WEST 1/2 11700 12600 11500 11600 11800 12200. Waves 1 foot or less. ONTARIO EAST 1/2 11600 12700 11600 11500 11600 12300. Waves 1 foot or less. $$