What are Santa Ana winds? Santa Ana winds flow east to west through Southern California's mountains, according to the National Weather Service. They begin when winds from the dese

High-speed winds this week have the potential to knock over semitrucks and cause other hazardous driving situations. Here's what to know.

Although the Santa Anas are a routine part of life for people living in southern California, the winds are particularly violent and destructive this time around, experts say.