Great Lakes Forecast
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Issued by NWS
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411 FZUS61 KBUF 242007 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 407 PM EDT Fri May 24 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 29.5 inch low near Lake Superior tonight will weaken as it slides across Southern Ontario Saturday. A 29.9 inch high will then build in Saturday night 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 29.6 inches as it remains across Quebec. LOZ062-250315- Lake Ontario open waters from the Niagara River to Hamlin Beach- 407 PM EDT Fri May 24 2024 .TONIGHT...North winds 5 to 15 knots becoming east 15 to 20 knots. Waves 2 feet or less building to 2 to 4 feet. .SATURDAY...East winds 15 to 20 knots becoming northeast and diminishing to less than 10 knots in the afternoon. A chance of showers late in the morning. A chance of showers and thunderstorms in the afternoon. Waves 3 to 5 feet subsiding to 1 to 3 feet. .SATURDAY NIGHT...East winds 10 knots or less becoming northwest. A chance of showers in the evening. Waves 2 feet or less. .SUNDAY...Northwest winds 10 knots or less becoming east. Waves 1 foot or less. .SUNDAY NIGHT...East winds 15 to 20 knots becoming southeast 10 to 15 knots. Showers likely with a chance of thunderstorms overnight. Waves 1 to 3 feet. .MONDAY...South winds 15 to 20 knots becoming southwest. Occasional showers with a chance of thunderstorms during the day, then a chance of showers Monday night. Waves 2 to 4 feet building to 3 to 5 feet. .TUESDAY...Southwest winds 15 to 20 knots becoming west 10 to 15 knots. A chance of showers. Waves 3 to 5 feet subsiding to 2 to 4 feet. .WEDNESDAY...Northwest winds 10 to 15 knots. A chance of showers. Waves 2 to 3 feet. Winds and waves higher in and near thunderstorms. $$ LOZ063>065-250315- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 407 PM EDT Fri May 24 2024 .TONIGHT...West winds 5 to 15 knots becoming east 15 to 20 knots. Waves 2 to 4 feet. .SATURDAY...East winds 15 to 20 knots becoming southeast 5 to 15 knots. A chance of showers and thunderstorms in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet. .SATURDAY NIGHT...South winds 5 to 10 knots becoming west. A chance of showers. Waves 1 foot or less. .SUNDAY...Northwest winds 10 knots or less becoming northeast. Waves 1 foot or less. .SUNDAY NIGHT...Northeast winds 10 to 15 knots becoming southeast 15 to 20 knots. A chance of showers overnight. Waves 1 to 3 feet. .MONDAY...South winds 15 to 20 knots becoming southwest. Showers likely with a chance of thunderstorms. Waves 2 to 4 feet building to 3 to 5 feet. .TUESDAY...Southwest winds 15 to 20 knots becoming west 10 to 15 knots. A chance of showers. Waves 3 to 5 feet subsiding to 2 to 4 feet. .WEDNESDAY...West winds 10 to 15 knots becoming northwest. A chance of showers. Waves 2 to 4 feet subsiding to 1 to 3 feet. Winds and waves higher in and near thunderstorms. $$ LOZ061-250315- MAFOR 2421/ ONTARIO WEST 1/2 11700 11800 11110 13220 11210 11100. A chance of showers and thunderstorms Saturday afternoon. Waves 2 feet or less building to 2 to 4 feet tonight. Waves 3 to 5 feet subsiding to 1 to 3 feet Saturday. ONTARIO EAST 1/2 11610 11700 11110 12220 12210 11200. A chance of showers and thunderstorms Saturday afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet, then building to 2 to 4 feet tonight. Waves 2 to 4 feet subsiding to 1 to 3 feet Saturday. $$