"A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly," the NWS said.

Another round of Santa Ana winds in the forecast led to the extension of a Red Flag Warning for parts of San Diego County.

As wildfires continued to burn in Los Angeles, several new fires broke out in San Diego County, prompting evacuation orders and warnings.

A red flag warning was set to expire for San Diego County Wednesday as Santa Ana winds diminish, although dry conditions could still create concern for wildfires in the days to come, forecasters said.

"If fire ignition occurs, conditions are favorable for very rapid fire spread and extreme fire behavior," the NWS warns.