What to KnowRed flag warnings are in effect for the Malibu coast, Santa Monica Mountains Recreational Area, and the San Gabriel, San Fernando and Santa Clarita valleys.The warning will later extend to Los Angeles County beaches,

That’s leading to the creation of mountain waves, which arise when strong winds blow perpendicular to a mountain range. The waves shoot down the coastal side of the mountains, gaining speed along the way, and are more casually referred to as simple Santa Ana winds.

Just months after dozens of structures were destroyed by the devastating Mountain Fire in Ventura County, residents are once again on edge with another strong Santa Ana wind event bearing down on Southern California.