A rare Particularly Dangerous Situation warning has been issued for Southern California as a powerful and potentially damaging Santa Ana wind event​ is expected.

More Santa Ana winds are expected in California, which is still reeling from the wildfires in Los Angeles County. As the winds intensify, experts are also warning of hidden health risks in the air. Reporter Sarah Alegre has more.

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.