A magnitude 4.2 earthquake shook Southern California's San Fernando Valley just before 4:30 a.m. on Thursday, the US Geological Survey said.
The light quake, which felt like a jolt, a pause and then a bit more rocking, was centered near Pacoima, north of Los Angeles. The earthquake wsas followed by several aftershocks later in the morning.
'Today's quakes are garden variety California quakes. In an area with lots of faults and both the 1994 Northridge and 1971 Sylmar quakes. The good [ordinary] life of the Golden State,' seismologist Lucy Jones tweeted.
Officials said they had received no reports of damage or injuries early Thursday. Los Angeles International Airport was operating normally and and inspectors there reported no damage.
Pacoima is about 23 miles northwest of downtown Los Angeles.