This week's tremor originated from most destructive fault. Here's what to know - NBC Los Angeles

.Today's quake stemmed from a lot of detrimental mistake. Here's what to recognize NBC Los AngelesSeismologist warns of enhancing earthquake activity in Southern California KTLA Los Angeles4.4 earthquake reaches LA Area, shakes properties and shakes nerves across SoCal ABC7 Los AngelesWatch: Enormity 4.4 earthquake captured during online show on ESPN CNN.