<Li> July 18--20, 2015: The remnants of Hurricane Dolores brought scattered showers and thunderstorms throughout Southern California, breaking many rainfall records and causing flooding . One such flash flood caused a bridge to collapse which shut down Interstate 10 between Indio and Blythe, effectively shutting off the primary Phoenix - to - Los - Angeles route . The good news was that the rain helped firefighters contain the North Fire within 3 days . </Li> <Li> August 6, 2015: Hurricane Guillermo interacted with a longwave trough in the subtropical jet to its northeast to spawn a rare dry - season atmospheric river, which went on to send moisture toward the San Francisco Bay Area, bringing a rare lightning storm to that area that night . Since the storm was dry and hardly brought any rain, the NWS issued a Red Flag Warning for that area . </Li> <Li> September 8--15, 2015: The remnants of Hurricane Linda brought localized downpours from Santa Barbara to San Diego, California . On September 15, Los Angeles received 2.39 inches of rain, making it one of the wettest September days since records dating back to 1877, second only to 1939 . </Li> <Li> On September 3, 2017, moisture associated with Tropical Storm Lidia brought rain to southern California . </Li>

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