Santa Ana winds occur when air flows west from a region of high pressure over the dry Great Basin to lower pressure off the California coast, According to Accuweather. As that cool interior air flows over and through mountain passes, it accelerates, sinks and compresses.

The Eaton Fire – one of a multitude of wildfires incinerating the Los Angeles area – is still burning with little containment on Saturday as the Santa Ana wind event fueling the blazes is set to continue into next week.

At least five wildfires are ravaging Southern California, and the three largest have already killed at least five people, burned tens of thousands of acres and prompted the evacuation of an estimated 179,