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Excessive Heat Warning Canceled; Thunderstorms Expected

Impending thunderstorms have cooled down the temperatures.

Ramona should expect some relief from the heat today and tomorrow thanks to isolated showers and thunderstorms, which have caused a cancellation of a heat warning.

Rumblings are expected in the mountain and deserts areas of San Diego County today as summer thunderstorms threaten the region, but the storm clouds also brought a cooling to desert areas.

"Increasing moisture and instability will generate thunderstorms over the mountains and deserts during the day today," according to the National Weather Service (NWS). "Deep layer moisture will be sufficient for locally heavy rain, leading to the potential for excessive runoff in normally dry creeks and streams.''

A flash flood watch for local mountain and desert areas, including Julian, is scheduled from 11 a.m. through this evening.

Local desert areas also were subject to an excessive heat warning today. Just before 7:40 a.m., the warning was canceled by the Weather Service.

"Excessive cloud cover and rainfall today and tonight will lower the threat of excessive heat occurring over the desert regions,'' an agency advisory read.

According to the NWS, Ramona should hit a high of 89 Thursday and 86 Friday, with temperatures continuously dropping into next week.

–City News Service contributed to this report.

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