The National Weather Service has issued a Red Flag waning for a wide swath of Southern California as Santa Ana winds are expected to bring dangerous fire weather to the region later this week.

San Diego County — in the midst of one of the driest periods on record — will be lashed by unusually cold and expansive Santa Ana winds early Wednesday that could spark wildfires, snap trees and knock out power,

The National Weather Service has issued a Red Flag Warning for San Diego County due to high winds and low humidity.