The NWS has reissued a 'particularly dangerous situation' warning for swaths of Los Angeles and Ventura counties, cautioning of high wind gusts, dry air and a higher risk of rapid fire spread and extreme fire behavior.

LAFD Chief Kristin Crowley said the department has staffed all available resources and fire patrols and engines are being strategically placed in the high-fire risk areas of the city.

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.

A map by the National Weather Service (NWS) shows California under both freeze and red flag fire danger warnings. Why It Matters. Southern California has been ravaged by wildfires

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.