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.

T he National Weather Service’s highest level “Particularly Dangerous Situation” Red Flag warning went into effect in parts of Los Angeles and Ventura counties earl

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.