More than 350,000 customers from Kern to San Diego counties could lose power amid the planned safety shutoffs.

A red flag warning indicating critical fire danger conditions will be in effect until 4 a.m. Wednesday for mountains and inland valleys throughout San Diego County. “Relative humidity values below 10  percent combined with these strong winds will create critical fire  weather conditions on Tuesday,

The Santa Ana winds of Southern California can be visualized in several ways. You can see their effects as palm trees sway in the morning light or when clean-up crews arrive to deal with branches and debris on streets.