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EXERCISE: USGS November 9 Exercise

Coordination for the Nov 9th exercise is at the new prototype site here: https://beta-response.scec.org

M7.8 Southern Turkey

Scientific response for the M7.8 Southern Turkey earthquake will be on a new prototype website for SCEC post-earthquake response. The link is below.



EXERCISE: Mw7.7 10 km NNW of Anza, CA

DRILL: Mw7.7 10 km NNW of Anza, CA

The Landers Earthquake 30th Anniversary Event Exercise event page will be on a new prototype website for SCEC post-earthquake response. The link is below.



2019.07.04 - M6.4 Searles Valley, California and 2019.07.05-M7.1 Indian Wells Valley, CA

The July 4th, 2019 Mw 6.4 earthquake in eastern California, southwest of Searles Valley, occurred as the result of shallow strike slip faulting in the crust of the North America plate. Focal mechanism solutions for the earthquake indicate rupture occurred on a steeply dipping fault as the result of either right lateral slip on a plane striking NW-SE, or as left lateral slip on a plane striking SW-NE. The earthquake was located approximately 150 km northeast of San Andreas Fault - the major plate boundary in the region.

2018.03.15 - Ides of March Post Earthquake Response Exercise

This is only a drill. The USGS will be using this site for an earthquake response exercise, scheduled for March 15, 2018. The M7.2 Scenario Earthquake - Sierra Madre will be used for this exercise.

Table Top Exercise (10:00am - 12:00pm)

2016.05.11 - Joint USGS-CGS Post-Earthquake Response Exercise, M7 Hayward Fault Scenario

This is only a drill. This scenario exercise was developed by USGS and CGS, and will begin at 9:00 am PT on May 11, 2016.

2014.08.24 - M6.0 South Napa Earthquake, California

USGS Press Release 8/26/2014 7:52pm PDT:

The area surrounding the epicenter of the mainshock is continuing to experience a number of aftershocks. As of Tuesday Aug. 26, 4 PM PDT, there have been more than 80 aftershocks; only four of these have had magnitudes greater than 3. The greater-than-magnitude 3 aftershocks include:

2013 Golden Guardian Exercise is "on" - please participate!


California Post-Earthquake Clearinghouse Exercise has started - please go to this web site to participate remotely.


The exercise will be centered on a major Bay Area earthquake scenario this year. Most exercise activity will take place this Wed., 5/15. For details, click on the first comment below and the attached PDF file. Thanks!




2012.08.26 - Swarm near Brawley, California

The swarm began last evening with six events of M<2.0, and activity picked up at 8:30 am today with three M2.5 events in a few minutes. As of 4:00 pm, CISN recorded more than 210 events. The largest two are M5.3 at 12:31 pm and M5.5 at 1:57 pm, and 38 events over M 3.0 have occurred.

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