M 4.8 quake rattles Santiago

 
A widely-felt magnitude-4.8 earthquake ruptured at the southern edge of Santiago today.
 

 
The event likely struck on the megathrust that lies 90 km beneath Santiago.
 

 
A M 8.8 quake struck on the megathrust to the south in 2010, and a M 8.3 struck to the north in 2015.