Shaking was also felt across a large swath of the Los Angeles area, and in several parts of Orange and Ventura counties, according to the map. WATCH: Map shows where 3.9-magnitude earthquake hit "Too ...

Additional information collected about the earthquake may also prompt U.S.G.S. scientists to update the shake-severity map. An aftershock is usually ... minor adjustments along the portion of a fault ...

You can get in touch with Joe by emailing [email protected] The San Andreas Fault, extending roughly ... approximately 10 miles northwest of Los Angeles, USGS reported.

Shaking was also felt across a large swath of the Los Angeles area, and in several parts of Orange and Ventura counties, according to the map. "Too small to definitively assign to any fault ...