But what exactly is causing these fires? One of the key factors fueling these fast-growing wildfires is Santa Ana winds. Santa Anas are dry, warm and gusty northeast winds that blow from the interior of Southern California toward the coast and offshore,

The ferocious Santa Ana winds that helped fuel the deadly wildfires around Los Angeles are forecast to ease later Wednesday, but they may return.

High pressure is building from the north and that will help to tighten the pressure gradient over southern California, producing more gusty winds.

Devastating fires in the Los Angeles region are driven by Santa Ana winds blowing from California and Nevada’s interior deserts to the Pacific Ocean.