COMPTON, Calif. (CNS) - A earthquake with a preliminary magnitude of 3.7 struck at 12:19 a.m. Friday in the Compton area of Los Angeles with a preliminary depth of 24 kilometers, the U.S. Geological Survey reported.
There were no immediate reports of damage or injuries, and shaking was felt as far away as Orange County.
"The (magnitude) 3.7 in Compton is near but not on the Newport- Inglewood fault," Dr. Lucy Jones, seismologist, founder and chief scientist at The Dr. Lucy Jones Center for Science and Society, tweeted Friday morning. "It was also very deep (15 miles) so no one was really close to it. Very similar to a (magnitude) 4.0 (on) Oct. 28, 2001, which was (about) a mile northwest and just about as deep."
There were "about a dozen burglar alarm calls" within approximately 20 minutes of the earthquake, but "otherwise business as usual," according to a tweet from the Los Angeles Police Department's Communications Division, which also reported that Los Angeles' 911 system "is fully operational."
The Los Angeles County Sheriff's Department had no reports of damage or injuries.
Hours before the Compton quake, a 3.8 magnitude earthquake shook in the Ridgecrest area -- the site of two massive temblors that caused extensive damage in July.
The earthquakes come a day after the state unveiled its MyShake app and early warning system.
The system is designed to alert Californians up to 20 seconds before shaking can be felt from an earthquake of magnitude 4.5 or greater.