Earthquake Country Alliance, Bay Area

Earthquake Country Alliance Bay Area (ECA Bay Area) is one of three regional alliances that comprise the statewide Earthquake Country Alliance, a public-private-grassroots partnership of leading earthquake professionals, emergency managers, government officials, business and community leaders, and others.

ECA is best known for coordinating the annual Great California ShakeOut earthquake drill and developing multi-sector educational resources.

Funding for ECA activities is provided by FEMA’s Building Science Branch as part of its support for the California Governor’s Office of Emergency Services Earthquake Program.

Earthquake Country Alliance Bay Area is the new name of the Bay Area Earthquake Alliance (which was founded in 2009 by the USGS as an ECA Regional Alliance).

We encourage you to Join the Alliance.


ECA Bay Area Workshops:
Graphic about the ECA Bay Area Winter 2023 Workshop with date with a picture of the Alameda County Office of Emergency Services.
ECA Bay Area Winter 2023 Workshop:
Register now!

Join us in person (!) for an in-depth presentation of the HayWired Scenario Exercise Toolkit, this quarter’s Quake Break, an update of ECA activities and more!

Graphic about the ECA Bay Area Fall 2022 Workshop with date with a graphic showing two people creating an emergency plan.
ECA Bay Area Fall 2022 Workshop:
Recording and materials available soon!

Talked about SFO emergency plans, recent earthquakes, and mitigation incentives; to play Run Your Resilientville; and to network!

Graphic about the ECA Bay Area Spring 2022 Workshop with date (May 25) with a graphic showing interconnected groups of people.
ECA Bay Area Spring 2022 Workshop:
Recording and presentation materials now available!

ECA Bay Area’s Spring 2022 Workshop featured a presentation on exercising aspects of an earthquake scenario; 2022 ECA Mini Award project updates; recent Bay Area Earthquakes; highlights of ECA resources and activities; and open discussion.

Other Past Workshops (some with recordings)


ECA Bay Area Coordinating Committee

  • Daniel Homsey, City and County of San Francisco: Chair
  • Dena Gunning, Central County Fire Dept. (San Mateo County): Chair
  • Ray Bonilla, Meta: Chair
  • Jeff Airth, SFO Airport Emerg. Management: Regional Workshops Coordinator
  • Theresa Langdon, Alameda County OES: Participation Bureau Coordinator
  • Chief David Cosgrave, Coastside Fire Protection District: Events Bureau Co-Coordinator
  • Kacey Treadway, San Mateo Consolidated Fire Department: Events Bureau Co-Coordinator
  • Janet Ruiz, Insurance Information Institute: Media Bureau Co-Coordinator
  • Susan Garcia, USGS: Communications Coordinator
  • Wendi Ellis, US Department of Health and Human Services: Membership Coordinator
  • Sharon Sandow de Groot, SCEC/USC: Regional Alliance Liaison

We are expanding the Coordinating Committee. If you are interested in volunteering please email for more information.