The National Weather Service has posted flash flood watches across much of the interior of southwestern California as monsoonal moisture flows through the region.
Thunderstorms and showers will continue through Wednesday afternoon with forecasters saying the atmosphere will become increasingly unstable in the afternoon and evening. The same moisture brought thunderstorms and lightening Tuesday, with some localized flooding.
Officials in Huntington Beach forced beach goers away from the shoreline where crowds of people had gathered to watch the U.S. Open of Surfing. The beach was reopened about an hour later.
According to KNBC-TV, residents in Corona experienced downpours and fierce winds that toppled trees and flattened fences, with some streets seeing flooding that threatened to send cars floating away.