San Andreas is the San Andreas Fault system, a right-lateral transform boundary between the Pacific and North American plates. It drives regional earthquake risk from California to beyond, with ongoing aftershocks and fault-network activity.
Recent studies show California’s San Andreas and San Jacinto faults are under stress at levels not seen in a millennium, raising the risk of a large, multi-fault rupture. Cajon Pass could act as a bridge or barrier, and preparedness measures are urged as hazard models improve with physics-based simulations.
A 6.7 magnitude quake near Aniso in Ayacucho has caused damage to homes, schools and healthcare facilities. USGS data shows the quake on Thursday; Peru’s civil defence and local authorities report power outages and injuries, with authorities coordinating relief and emergency response.