Atmospheric rivers caused downpours in the Bay Area on Wednesday, bringing cable car services to a halt, before moving on to Los Angeles and San Diego by Thursday. Officials in Santa Barbara County raised evacuation advisories to orders on Saturday, calling on residents to be at a "very high state of readiness." Heavy rain and extreme weather caused roadway erosion at San Onofre's lower parking lot, with images on social media showing sections of the lot collapsing onto the beach below. A Sunday update from the National Weather Service Weather Prediction Center predicted risks of rainfall exceeding flash flood guidance across swathes of the state with "high risk" — estimated at 70% probability — for San Diego and Orange Counties. The storm comes as the San Diego County Medical Examiner's Office announced it was investigating three deaths in late January as related to California's last encounter with heavy storms.

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