The National Weather Service issued a "particularly dangerous situation" alert for Los Angeles and Ventura counties as another dangerous wind event is expected this week.

Gusts of up to 70 mph are possible along the coast and valleys, and in the mountains, up to 100 mph, the National Weather Service said. Swaths of Los Angeles County, and most of Ventura County, are at the highest risk.

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.