EERI response to M6.4 Searles Valley, earthquake near Ridgecrest

On July 4, 2019, a M6.4 earthquake struck near Ridgecrest, California. EERI is currently monitoring the situation from media reports and notes from colleagues in the impacted region as part of its Learning from Earthquakes program and is considering an EERI response.

EERI encourages its members to coordinate reconnaissance efforts through the California Earthquake Clearinghouse. EERI is one of the managing partners of the California Clearinghouse along with the California Geological Survey, USGS, the California Seismic Safety Commission, and the California Office of Emergency Services. As subject matter experts, EERI members can provide trusted observations of conditions in the field.

The California Earthquake Clearinghouse establishes a location (physical and virtual) to coordinate earthquake field investigations and share observations and knowledge. The engineering and scientific communities feed information to the Clearinghouse that can inform emergency managers during response and recovery. The physical location for the clearinghouse has not yet been established but more information will be posted soon on the EERI website. A California Clearinghouse Briefing will likely be scheduled this evening (both in-person and remote).

At this time, we welcome help in gathering and sharing links to media reports, information from earthquake professionals with field reports, or relevant technical literature. 

More information about the earthquake is available on the USGS website.

How to contribute:

EERI members and other earthquake risk reduction professionals can contribute to reconnaissance efforts for this earthquake in the following ways:

1. Use the Fulcrum app to collect and share reconnaissance data

EERI members conducting reconnaissance are encouraged to collect data using the EERI reconnaissance data collection form in the Fulcrum app. To collect data through the EERI Fulcrum Community account, please sign up here. After signing up, you will receive a confirmation email with instructions about how to download the Fulcrum app on your phone (users are manually approved so there may be a short delay in receiving this email). To learn more about how to use the Fulcrum app, you can view a series of short tutorial videos here

If you have questions about using the Fulcrum app, please contact Maria Luisa Jiminian at This email address is being protected from spambots. You need JavaScript enabled to view it..

2. Inform EERI of your reconnaissance plans

If you will be participating as a part of a reconnaissance mission, recovery mission, or traveling to the impacted area for any other purpose, please contact Maggie Ortiz-Millan (This email address is being protected from spambots. You need JavaScript enabled to view it.) to inform her of your timeline and travel details. EERI can help link you to others in the field, support you in efforts to share photos or observations, and connect you with the EERI team (if one is mobilized).

3. Volunteer with the Virtual Earthquake Reconnaissance team

Research specific topics to gain an understanding of the extent of damage in the region. VERT reports will be used to help inform the LFE Executive Committee’s response to this earthquake. Join VERT by signing up here.

4. Other ways to contribute

Earthquake investigators are encouraged to contact Maggie Ortiz-Millan (This email address is being protected from spambots. You need JavaScript enabled to view it.) if they have suggestions about how they can contribute to this clearinghouse effort.