Residents in southern California are in the middle of a "Particularly Dangerous Situation" as wind stays in the forecast with still raging wildfires, according to officials.

A red flag warning has been issued through Wednesday in Southern California because of potentially dangerous fire conditions. The National Weather Service issues red flag warnings when threatening wildfire conditions are more likely.

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.