The quake struck around 0200 local time and was centered offshore about 10 miles south of Malibu Beach and west of Los Angeles, at a depth of 9.2 miles, according to USGS.

Three minutes later, another quake struck with a 3.5 magnitude aftershock. At 0222 and 0238 local time, two progressively weaker aftershocks were recorded. 

The quakes prompted the Los Angeles Fire Department (LAFD) to enter "Earthquake Mode." Crews surveyed all major "areas of concern" across the metro area and found "no damage or injuries." 

However, social media was flooded with comments by residents who were jolted awake by the quakes.