Last week, southern California felt tremors that measured 7.1.
Two strong earthquakes hit Southern California on July 4 and 5.
The region has experienced an average of 30 earthquakes per hour following Friday night's swarm.
The quake struck while a baseball game was taking place at Dodger Stadium, sending some fans scrambling for the exits.
The tremor is stronger than the 6.4 quake on the Fourth of July.
The U.S. Geological Survey recorded a strong aftershock less than 24 hours after a 6.4 magnitude earthquake that struck California.
California residents who experienced the 6.4 magnitude earthquake shared footage online of their experiences as experts warn more powerful tremors may be yet to come.
Yesterday, the region experienced its strongest earthquake for two decades when a 6.4 magnitude tremor struck near the community of Ridgecrest.
The tiny rumble registered a magnitude of just 0.9.
Fortunately, the earthquakes were not powerful enough to cause any damage or injuries on the surface.
Scientists analyzed the 2011 Japan earthquake to better understand the global carbon cycle.
The earthquake situation in California is actually more dire than people realize.
The shaking wasn't enough to cause significant damage but did serve as an alarm clock for some.
"With the tsunami, we can only pray humbly and not celebrate much for this year's Christmas," Pastor Rusman Anita Sitorus said.
The earthquake swarm at the western part of the national park lasted for three and a half months.
A 3.3 magnitude aftershock struck about 13 minutes later.
"I don't think I've seen anything like it," said one seismologist.
The drill aims to teach people what to do in the event of an earthquake, so that if and when one occurs, they'll be prepared.
At least 10 people have lost their lives and 130 people are estimated injured, officials said.
It hasn't been determined if the earthquake was the cause of the eruption.
The European-Mediterranean Seismological Centre (EMSC) reported that a tsunami should not be an issue with the pretty sizable quake.