Great Lakes Forecast
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Issued by NWS
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838 FZUS61 KBUF 252033 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 433 PM EDT Sat May 25 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 weakening 29.8 inch trough over the central Great Lakes will fall apart this evening. A 29.9 inch high will build in late tonight and remain over the lake through Sunday. A 29.3 inch low will then track from Lake Michigan to central Quebec Sunday night through Tuesday, with its warm front crossing the lake Monday, and its trailing cold front then following suit Monday night. This low will then weaken to 29.7 inches as it slowly drifts across northern Quebec and Atlantic Canada Tuesday and Wednesday. An expansive 30.2 inch high centered over Hudson Bay will build across the Great Lakes Wednesday night and Thursday. LOZ062-260300- Lake Ontario open waters from the Niagara River to Hamlin Beach- 433 PM EDT Sat May 25 2024 .TONIGHT...East winds 15 to 20 knots becoming northwest and diminishing to 10 knots or less this evening. A chance of showers early. Patchy fog late. Waves 2 feet or less. .SUNDAY...Northwest winds 10 knots or less becoming east. Patchy fog early. Waves 1 foot or less. .SUNDAY NIGHT...East winds 10 to 15 knots increasing to 15 to 20 knots. Showers likely with a chance of thunderstorms overnight. Waves 1 foot or less building to 2 to 4 feet. .MONDAY...East winds 10 to 15 knots becoming south. Showers with a chance of thunderstorms. Some thunderstorms may produce gusty winds. Waves 2 to 3 feet. .MONDAY NIGHT...Southwest winds 15 to 25 knots. Showers likely with a chance of thunderstorms in the evening. Some thunderstorms may produce gusty winds in the evening. Waves 2 to 4 feet building to 3 to 6 feet. .TUESDAY...Southwest winds 15 to 20 knots becoming west 10 to 15 knots. A chance of showers. Waves 3 to 6 feet. .WEDNESDAY...West winds 10 to 15 knots becoming northwest. A chance of showers. Waves 2 to 4 feet. .THURSDAY...Northwest winds 10 to 15 knots. Waves 1 to 3 feet. Winds and waves higher in and near thunderstorms. $$ LOZ063>065-260300- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 433 PM EDT Sat May 25 2024 .TONIGHT...East winds 5 to 15 knots becoming west 10 knots or less. Showers likely early, then a chance of showers through the early overnight. Patchy fog late. Waves 2 feet or less. .SUNDAY...West winds 10 knots or less becoming north. Patchy fog early. Waves 1 foot or less. .SUNDAY NIGHT...Northeast winds 5 to 15 knots becoming east. A chance of showers and thunderstorms overnight. Waves 1 to 3 feet. .MONDAY...Southeast winds 10 to 15 knots becoming south 15 to 20 knots. Showers with a chance of thunderstorms. Some thunderstorms may produce gusty winds. Waves 1 to 3 feet building to 3 to 5 feet. .MONDAY NIGHT...South winds 15 to 20 knots becoming southwest. Showers with a chance of thunderstorms in the evening, then a chance of showers overnight. Some thunderstorms may produce gusty winds in the evening. Waves 2 to 4 feet building to 3 to 5 feet. .TUESDAY...Southwest winds 15 to 20 knots. A chance of showers. Waves 3 to 6 feet. .WEDNESDAY...West winds 15 to 20 knots becoming northwest 10 to 15 knots. A chance of showers. Waves 2 to 4 feet. .THURSDAY...Northwest winds 10 to 15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet. Winds and waves higher in and near thunderstorms. $$ LOZ061-260300- MAFOR 2521/ ONTARIO WEST 1/2 11210 11300 11600 13700 11600 11100. A chance of showers this evening. Waves 2 feet or less. ONTARIO EAST 1/2 11200 11300 11500 14600 11700. A chance of showers this evening. Waves 1 foot or less. $$ JJR