New system sends earthquake warnings through an app and the wireless system that issues Amber Alerts; insight from Richard Allen, director of the UC Berkeley Seismological Lab.
The epicenter was believed to be around Ridgecrest, 52 miles from Barstow, according to the U.S. Geological Survey, the Los Angeles Times reported.
The surrounding area has seen five quakes of magnitude 3.0 or greater over the past 10 days, the report said.
Wednesday’s quake was considered an aftershock of an earthquake occuring in the area last July, Dr. Lucy Jones of the USGS wrote in a Twitter message.
There were no immediate reports of injuries or major structural damage.