Los Angeles County was placed under a tornado warning by the National Weather Service on Wednesday at 10:20 a.m. The warning is in effect until 10:45 a.m.

Driven by an atmospheric river, the storm has already caused at least four deaths and widespread damage since last weekend. The National Weather

A flood watch remained for the Bay Area after the National Weather Service issued a flash flood warning overnight until 6 a.m.

The NWS Los Angeles/Oxnard CA issued a tornado warning at 10:20 a.m. on Wednesday in effect until 10:45 a.m. for Los Angeles.