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Great Lakes Forecast
Issued by NWS
Issued by NWS
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410 FZUS61 KBUF 151935 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 335 PM EDT Mon Jul 15 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 compact low will cross the lake through this evening, followed by a weak 29.9 inch surface high ridging over the lake overnight. Another 29.5 inch compact low will cross the lake on Tuesday. A 29.7 inch cold frontal boundary over the upper Great Lakes on Tuesday will push across the lake late Tuesday night and Wednesday morning. A sprawling 30.2 inch high over the northern plains Wednesday evening will build across the entire Great Lakes region late Wednesday night through Friday. LOZ062-160315- Lake Ontario open waters from the Niagara River to Hamlin Beach- 335 PM EDT Mon Jul 15 2024 ...SEVERE THUNDERSTORM WATCH 538 IN EFFECT UNTIL 7 PM EDT THIS EVENING... .TONIGHT...West winds 5 to 15 knots becoming southwest. Showers and thunderstorms likely early. A chance of showers late. Some thunderstorms may produce gusty winds early. Waves 2 feet or less. .TUESDAY...Southwest winds 10 to 15 knots increasing to 15 to 20 knots. Showers and thunderstorms likely through early afternoon, then a chance of showers late. Some thunderstorms may produce gusty winds through early afternoon. Waves 1 to 3 feet building to 2 to 4 feet. .TUESDAY NIGHT...Southwest winds 15 to 20 knots becoming west 10 to 15 knots. A chance of showers and thunderstorms overnight. Waves 2 to 4 feet. .WEDNESDAY...West winds 10 to 15 knots. A chance of showers and thunderstorms in the morning, then a chance of showers in the afternoon. Waves 1 to 3 feet. .WEDNESDAY NIGHT...Northwest winds 10 to 15 knots. Waves 1 to 3 feet. .THURSDAY...Northwest winds 10 to 15 knots. Waves 1 to 3 feet. .FRIDAY...Northwest winds 5 to 10 knots becoming southwest. Waves 1 foot or less. .SATURDAY...West winds 5 to 10 knots becoming northwest. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$ LOZ063>065-160315- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 335 PM EDT Mon Jul 15 2024 ...SEVERE THUNDERSTORM WATCH 538 IN EFFECT UNTIL 7 PM EDT THIS EVENING... .TONIGHT...West winds 5 to 15 knots becoming southwest. Showers and thunderstorms likely this evening. Some thunderstorms may produce gusty winds this evening. Waves 2 feet or less. .TUESDAY...South winds 10 to 15 knots becoming southwest 15 to 20 knots. Showers and thunderstorms from late morning on. Some thunderstorms may produce gusty winds from late morning on. Waves 1 to 3 feet building to 2 to 4 feet. .TUESDAY NIGHT...Southwest winds 15 to 20 knots becoming west 10 to 15 knots. A chance of showers and thunderstorms overnight. Waves 3 to 5 feet subsiding to 1 to 3 feet. .WEDNESDAY...West winds 10 to 15 knots. A chance of showers and thunderstorms in the morning, then a chance of showers in the afternoon. Waves 1 to 3 feet. .WEDNESDAY NIGHT...West winds 10 to 15 knots becoming northwest. Waves 1 to 3 feet. .THURSDAY...Northwest winds 5 to 15 knots. Waves 1 to 3 feet. .FRIDAY...Northwest winds 5 to 10 knots becoming southwest. Waves 1 foot or less. .SATURDAY...Southwest winds 5 to 10 knots becoming northwest. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$ LOZ061-160315- MAFOR 1521/ ONTARIO WEST 1/2...SEVERE THUNDERSTORM WATCH IN EFFECT...11609 11600 12510 13519 11520. Waves 2 feet or less tonight. Waves 1 to 3 feet building to 2 to 4 feet Tuesday. ONTARIO EAST 1/2...SEVERE THUNDERSTORM WATCH IN EFFECT...11809 11509 11600 12510 11419 11519 11529. Waves 2 feet or less tonight. Waves 1 to 3 feet building to 2 to 4 feet Tuesday. $$