Southern California woke up to a jolt early Thursday after a 4.2-magnitude earthquake hit the Pacoima area, the U.S. Geological Survey (USGS) reported.
The quake hit at about 4:30 a.m. and was centered 1.3 miles from Pacoima and 1.4 miles north of San Fernando Valley. USGS added that about two hours later, a 3.8-magnitude aftershock rocked the same area.
The San Fernando Valley region as well as some areas in Los Angeles reported a strong rocking. This was followed by a 3.3 aftershock several minutes later.
The USGS said the shaking was felt over an area stretching from Palmdale to Anaheim, and from Ontario to Agoura Hills.
Celebrities and residents immediately posted their reactions on Twitter.
Caltech Staff Seismologist Dr. Jen Andrews said 60 aftershocks have been recorded.
She said the earthquake occurred near the area of the 6.7-magnitude San Fernando earthquake in 1971, and the 6.7-magnitude Northridge earthquake in 1994.
“It’s not possible for us to say today’s event is related to those, but it’s not surprising that we’re having seismicity in this area. We’ve got a number of fault signs nearby, including the Sierra Madre fault sign … as well as the Mission Hills and Northridge Hills faults.”
The Los Angeles Fire Department said no serious damage or injuries due to the quake have been recorded. It has “concluded the systematic survey of the City of Los Angeles by ground and air.”