Here's a guide to understanding "particularly dangerous situation" red flag warnings, containment, and other terms related to the devastating fires that have left much of the LA area in ruins.

The National Weather Service has issued a Red Flag Warning and a Wind Advisory until 6 p.m. Wednesday, January 15, due to strong gusty winds and low relative humidity for the Santa Ana Mountains and Inland Orange County.

A red flag warning for critical fire danger, due to strong winds and low humidity, will remain in effect until 6 p.m. Wednesday for the San Diego County mountains and inland valleys.