Millions of Southern Californians are on edge as a final round of dangerous fire weather is forecast for the region on Wednesday, along with a rare warning of a “Particularly Dangerous Situation” for an area near where two massive blazes have killed

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.

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.

By Jorge Garcia and Lisa Richwine LOS ANGELES (Reuters) -Firefighters on Wednesday contended with persistently strong and dry winds fueling two giant wildfires that have terrified Los Angeles for eight days,