SAN DIEGO (AP) — The National Weather Service is warning Southern Californians to watch out for flash floods and strong surf because of a Pacific hurricane that is churning north up the Mexican coast.

Thunderstorms could form Saturday over inland mountains and deserts, and they were likely on Sunday. Meteorologist David Sweet says the storms could drop up to three inches of rain per hour.

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As a result, the weather service has issued a flash-flood watch from Sunday morning through Monday morning in parts of San Diego, San Bernardino and Riverside counties.

Meanwhile, at the beach, waves could reach eight feet high, particularly south-facing beaches that will directly get hurricane Norbert’s sea swell. Coastal flooding is also possible.

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On Saturday, a man drowned while taking an early morning swim with friends off Redondo Beach.

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