Great Lakes Forecast
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Issued by NWS
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484 FZUS61 KBUF 222049 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 449 PM EDT Sat Jun 22 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 29.6 inch low over the Upper Great Lakes tonight will push a frontal boundary northward to the Quebec border by daybreak Sunday. The low will deepen to 29.4 inches during the day Sunday while passing to the north of the lake. The low will push a cold front across the region late Sunday afternoon and evening. A 30.0 inch high centered over the Ohio Valley on Monday will extend northwards across the Great Lakes. The axis of the high pressure will cross the lake Monday night and Tuesday. The next cold front will then cross the lake Wednesday. LOZ062-230315- Lake Ontario open waters from the Niagara River to Hamlin Beach- 449 PM EDT Sat Jun 22 2024 .TONIGHT...East winds 10 to 15 knots becoming southwest. A chance of showers and thunderstorms this evening, then showers likely with a chance of thunderstorms after midnight. Waves 1 to 3 feet. .SUNDAY...Southwest winds increasing to 15 to 20 knots. Showers likely with a chance of thunderstorms in the morning, then just a chance of showers in the afternoon. Some thunderstorms may produce gusty winds. Waves 1 to 2 feet building to 3 to 5 feet. .SUNDAY NIGHT...West winds 15 to 20 knots becoming northwest 10 to 15 knots. A chance of showers and thunderstorms in the evening, then a chance of showers overnight. Waves 3 to 5 feet subsiding to 2 to 4 feet. .MONDAY...Northwest winds 10 to 15 knots becoming west. A chance of showers in the morning. Waves 2 to 4 feet subsiding to 1 to 3 feet. .MONDAY NIGHT...West winds 5 to 10 knots. Waves 1 to 3 feet. .TUESDAY...Southwest winds 10 to 15 knots. A chance of showers Tuesday night. Waves 2 feet or less. .WEDNESDAY...Southwest winds 10 to 15 knots becoming northwest. Showers likely with a chance of thunderstorms. Waves 1 to 2 feet. .THURSDAY...North winds 5 to 10 knots. Waves 1 to 2 feet. Winds and waves higher in and near thunderstorms. $$ LOZ063>065-230315- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 449 PM EDT Sat Jun 22 2024 .TONIGHT...Northeast winds 10 to 15 knots becoming south. A chance of showers and thunderstorms this evening, then more widespread showers with a chance of thunderstorms after midnight. Waves 2 feet or less. .SUNDAY...Southwest winds 10 to 15 knots becoming south. Showers likely with a chance of thunderstorms. Some thunderstorms may produce gusty winds. Waves 1 to 3 feet building to 3 to 5 feet. .SUNDAY NIGHT...Southwest winds 10 to 15 knots becoming northwest 15 to 20 knots. A chance of showers and thunderstorms in the evening, then a chance of showers overnight. Some thunderstorms may produce gusty winds in the evening. Waves 3 to 5 feet subsiding to 2 to 4 feet. .MONDAY...Northwest winds 15 to 20 knots becoming west 10 to 15 knots. A chance of showers. Waves 2 to 4 feet. .MONDAY NIGHT...West winds 10 to 15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet. .TUESDAY...Southwest winds 10 to 15 knots. A chance of showers Tuesday night. Waves 2 feet or less. .WEDNESDAY...Southwest winds 10 to 15 knots. Showers likely with a chance of thunderstorms. Waves 1 to 2 feet. .THURSDAY...North winds 10 to 15 knots. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$ LOZ061-230315- MAFOR 2221/ ONTARIO WEST 1/2 12210 11300 11416 11510 11516 11506 11410. A chance of thunderstorms. Waves 1 to 3 feet tonight. Waves 1 to 2 feet building to 3 to 5 feet Sunday. ONTARIO EAST 1/2 11110 11200 11300 11416 11410 11516 12416. A chance of thunderstorms. Waves 2 feet or less tonight. Waves 1 to 3 feet building to 3 to 5 feet Sunday. $$