A magnitude-4.2 earthquake was reported Sunday morning in the Frazier Park area north of Los Angeles.
The earthquake in Kern County produced shaking in Frazier Park, Lebec, Santa Clarita, Palmdale, Marina del Rey, Agoura Hills and other communities.
The quake in the mountains about 70 miles north of Los Angeles. occurred at about 3:30 a.m. at depth of about 8 miles.
Did you feel it?
Whether you feel shaking from an earthquake largely depends on three major factors — magnitude, distance and local soil conditions. Magnitude refers to the strength of the quake. The closer your location to the epicenter, the more likely you’ll feel the effects of seismic waves that become less intense as they move out from the fault. Generally, the looser the soil under your location, the greater the amplification.
Aftershocks
Some earthquakes are followed by a larger earthquake, in which case the first quake would then be called a foreshock. For example, the magnitude-9.1 Japan earthquake and tsunami in 2011 was preceded by a magnitude-7.3 foreshock two days earlier.
Aftershocks decrease over time, but can continue for days, weeks, months and years.