An earthquake jolted Devore on Saturday morning at the base of the Cajon Pass on the San Andreas Fault, according to the U.S. Geological Survey.
Initial measurements of 4.1 magnitude were reduced to 3.8 magnitude.
The temblor was measured at 8:07 a.m. Pacific Time, two miles west-northwest of Devore at the foot of the Cajon Pass, eight miles west of Crestline, and nine miles north-northwest of Railto, according to the USGS.
Emergency dispatchers in Railto received several calls from people who were curious about the magnitude, but the dispatchers received no calls of damage or injuries, a dispatch supervisor said in a phone interview at 10:20 a.m.
More than 3,800 people, from as far as Las Vegas, reported to the USGS they felt the quake by 10:30 a.m.