ERA Members

The ERA provides its members with classified up-to-date research information on earthquake engineering and seismology, special invitations to events and activities, and links to a large network of scientists, public safety, communications, utilities, CUBE/CISN partners, the media, and many other industries.

To inquire about obtaining an ERA membership, please contact the Office of Earthquake Programs (ERA) at Caltech.

ERA Members:


  • Coachella Valley Water District
  • City of Los Angeles, Department of Water & Power
  • Metropolitan Water District of Southern California
  • San Diego Gas & Electric
  • Southern California Edison Company
  • Southern California Gas Company
  • Southern California Water Company


  • AT&T
  • Verizon


  • City of Los Angeles, Emergency Preparedness Division
  • County of Los Angeles, Office of Emergency Management
  • County of San Bernardino, Office of Emergency Services
  • State of California, Office of Emergency Services (OES)


  • CBS2-TV
  • KABC
  • KCAL
  • KCBS
  • KCOP
  • KNBC
  • KNX
  • KTTV
  • KTLA
  • KVEA


  • Burlington, northern and Santa Fe Railroad
  • Southern California Regional Rail (Metrolink)
  • State of California, Department of Transportation (CALTRANS)


  • Digetexx
  • Factory Mutual Engineering Kinemetrics
  • United States Forest Service
  • Science Solutions International Laboratories (CIT-Itochu)

Live Earthquake Tweets Follow @CaltechQuake

@CaltechQuake tweets automatic earthquake notifications in real-time that have not been reviewed by a seismologist. Messages are only sent for events larger than M2.75. Results are subject to change or deletion.

Acknowledge the SCSN

"California Institute of Technology (Caltech) (1926): Southern California Seismic Network. International Federation of Digital Seismograph Networks. Other/Seismic Network. doi:10.7914/SN/CI"

Data were provided by the Caltech/USGS Southern California Seismic Network

For further acknowledgement info go to Acknowledgment Policy