Magnitude 4.32 quake near Ocotillo Wells, CA

Last updated: 2014-10-13 21:29:11 UTC

The Anza group at the University of California San Diego operates a broadband seismograph network consisting of 13 (+ 2) three component broadband seismograph stations centered near Anza, California (see map).

On Saturday, September 21st, 2002 at 14:26 (PDT) (21:26 UTC) we recorded a quake (preliminary ml 4.32) located near the city of Ocotillo Wells, California.

If you felt the quake, the USGS would like to know. Please add to the USGS "Did you feel it?" page.

View the most recent map of local events near San Diego or a slightly wider regional view of events recoded by ANZA, or a map of events recoded by ANZA from around the globe.

Initial source parameters for the recent event and aftershocks are shown below. The epicentral distance (distance separating the epicenter and the closest station in the recording network) for Anza is 0.394 degrees (43.81083 km).

This map shows the mainshock (red star). Anza network stations are blue triangles.

Global mecator event map
Latitude Longitude Origin time (UTC) Depth ml Author
33.2194 -116.1175 9/21/02 (264) 14:26:16.132 16.0000 4.32* orbassoc

* The location and magnitude determined for this event are preliminary and are subject to change upon further review of seismic data.

You may also view a plot showing:

Download data:css3.0 miniSEED data for Anza

Of local interest

We operate a broadband station on Mt. Soledad. At 14:26 (PDT) station SOL recorded the P wave from this event. Here is a view of that event as picked by our analyst. The pink "P" indicates a P wave arrival, the "S" indicates an S wave arrival.

3 component seismometer recordings at Soledad

View a larger image showing the waveforms recorded at Mt. Soledad.

Visit the TRINET website with additional links to seismic data for this event.

Learn more about the Anza group (including who works here, other networks, nuclear tests in China/India/Pakistan).
Learn more about the ANZA network (includes more station information, research, etc).

URL: http://eqinfo.ucsd.edu/special_events/2002/264/a/index.php [Last updated: 2014-10-13 21:29:11 UTC]