Great Lakes Forecast
Issued by NWS
Issued by NWS
698 FZUS61 KBUF 050240 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1040 PM EDT Fri Oct 4 2024 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 30.3 inch high will build from the Upper Great Lakes tonight to Quebec and the Lower Great Lakes Saturday before retreating to Labrador by Sunday. A 29.3 inch low over northwest Ontario province early Sunday will push a strong cold front across the lake Sunday night. The low will move to near James Bay by Monday while expansive high pressure centered over the Upper Mississippi valley will move east through the middle of next week. LOZ062-050915- Lake Ontario open waters from the Niagara River to Hamlin Beach- 1040 PM EDT Fri Oct 4 2024 .OVERNIGHT...Northwest winds 10 to 15 knots. Waves 1 to 3 feet. .SATURDAY...North winds 10 to 15 knots becoming west less than 10 knots. Waves 2 feet or less. .SATURDAY NIGHT...South winds 10 knots or less increasing to 10 to 15 knots. Waves 2 feet or less. .SUNDAY...South winds 10 to 15 knots becoming southwest 15 to 20 knots. A chance of showers in the morning, then showers with a chance of thunderstorms in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet. .SUNDAY NIGHT...Southwest winds 15 to 20 knots becoming west. Showers with a chance of thunderstorms in the evening, then a chance of showers overnight. Waves 2 to 4 feet. .MONDAY...West winds 15 to 20 knots. A chance of showers. Waves 3 to 5 feet. .TUESDAY...West winds 15 to 20 knots. A chance of showers. Waves 2 to 4 feet. .WEDNESDAY...Northwest winds 10 to 15 knots. A chance of showers. Waves 1 to 3 feet. Winds and waves higher in and near thunderstorms. $$ LOZ063>065-050915- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 1040 PM EDT Fri Oct 4 2024 .OVERNIGHT...North winds 10 to 15 knots becoming northwest. Waves 1 to 3 feet. .SATURDAY...North winds 10 to 15 knots becoming northwest. Waves 1 to 3 feet. .SATURDAY NIGHT...North winds 10 knots or less becoming south 10 to 15 knots. Waves 2 feet or less. .SUNDAY...South winds 10 to 15 knots increasing to 15 to 20 knots. Showers with a chance of thunderstorms in the afternoon. Waves building to 2 to 4 feet. .SUNDAY NIGHT...South winds 15 to 20 knots becoming west. Showers with a chance of thunderstorms. Waves 2 to 4 feet. .MONDAY...West winds 15 to 25 knots becoming northwest. Showers likely. Waves building to 4 to 7 feet. Waves occasionally around 9 feet. .TUESDAY...West winds 15 to 20 knots. Showers likely. Waves 2 to 4 feet. .WEDNESDAY...Northwest winds 10 to 15 knots. A chance of showers. Waves 1 to 3 feet. Winds and waves higher in and near thunderstorms. $$ LOZ061-050915- MAFOR 0503/ ONTARIO WEST 1/2 13710 11810 12800 11400 11300. Waves 1 to 3 feet subsiding to 1 foot or less overnight and Saturday. Waves 1 foot or less Saturday evening. ONTARIO EAST 1/2 11800 12710 12810 12800 11100. Waves 1 to 3 feet subsiding to 1 foot or less overnight and Saturday. Waves 1 foot or less Saturday evening. $$