Special Earthquake Report


Mogul-Somersett Earthquake Sequence; West Reno, Nevada

  • Interactive 3D Image of Mogul Earthquake Relocations Updated 11/06/2008

  • Get Involved in our research Updated 8/11/2008

    *The location and mechanisms of these earthquakes all indicate that they are not related to volcanic activity

    *This ongoing earthquake swarm is a timely reminder that western Nevada has a significant earthquake hazard. Residents of the area are encouraged to check our guide on Living with Earthquakes in Nevada at our Earthquake Preparedness page . Protect your self, Drop, Cover, and Hold On!



    November 14, 2008

    Relocations of Mogul-Somersett Earthquakes through November 14, 2008 (Ken Smith)




    Earthquakes in the 2008 Mogul-Somersett sequence have been relocated with application HYPODD using both phase data and waveform cross-correlation (Waldhauser & Ellsworth, 2000). David von Seggern computed the cross-correlation times. This set includes about 1000 of the best located events.

  • Animation Video of 2008 Mogul Sequence (Yui Miyata) (AVI file 23MB) Updated 6/24/2008


    Latest Earthquakes Map; Reviewed Event Catalog Locations

    Latest map of aftershocks as of:
    *Currently, maps are updated when a seismologist reviews activity and confirms it. For real-time maps, Click here

  • Brief Release on the May 7, 2008 M3.8 earthquake by Glenn Biasi
  • Summary, May 4, 2008 by John Anderson
  • Summary, May 3, 2008 by John Anderson
  • Summary, May 1, 2008 by John Anderson



  • GPS Time Series Since 4/26/2008 (Geoff Blewitt, and Yui Miyata) NEW 8/4/2008



  • Thanks to Geoff Blewitt, Nevada Bureau of Mine and Geology, this map shows results from 4 GPS stations installed near Mogul. Number near arrows states the displacement in millimeter. Geoff calculated the displacement since 4/26/2008.



  • 24 Hour Helicorder Format Images in Year-Julian Day Filename Convention


  • 2008 Mogul-Somersett Nevada Regional Moment Tensor Solutions
    Created by Gene Ichinose



    Cumulative Number of Earthquakes
  • Magnitudes 1 to 2.5


  • Gutenberg-Richter curve



    Map gallery

  • Recent Earthquake Map
    Last Updated:

  • Weekly Map
    Day Range Week #
    02/28-03/01 Week 1
    03/01-03/08 Week 2
    03/09-03/15 Week 3
    03/16-03/22 Week 4
    03/23-03/29 Week 5
    03/30-04/05 Week 6
    04/06-04/12 Week 7
    04/13-04/19 Week 8
    04/20-04/26 Week 9
    04/27-05/03 Week 10
    05/04-05/10 Week 11
    05/11-05/17 Week 12
    05/18-05/24 Week 13
    05/25-05/31 Week 14
    06/01-06/07 Week 15
    06/08-06/14 Week 16
    06/15-06/21 Week 17
    06/22-06/28 Week 18
    06/29-07/05 Week 19
    07/06-07/12 Week 20
    07/13-07/19 Week 21
    07/20-08/02 Week 22 & 23
    August 2008 August
    September 2008 September
    October 2008 October
    November 2008 November






  • June 9th Report (PDF file)

  • April 26th Report (PDF file)

  • April 24th Report (PDF file)

  • April 15th #2 Report (PDF file)

  • April 15th Report (PDF file)

  • April 1st Report (PDF file)
  • April 1st Report (Web page)

  • March 26 Report: What we know (PDF file)

  • March 24th Report (PDF file)
  • March 24th Report (Web page)

  • March 15th Report (PDF file)
  • March 15th Report (Web page)

  • More Observation (PDF file)

  • March 8th Report (PDF file)
  • March 8th Report (Web page)


    *Did you feel the M3.8 on May 7, 2008? Report it here.
    Then you can look at report statistics here, and a statistical map here.


    *Did you feel the M4.7 on April 25, 2008? Report it here.
    Then you can look at report statistics here, and a statistical map here.


    *Did you feel the M4.2 on April 24, 2008? Report it here.
    Then you can look at statistics here, and a statistical map is here.


  • M 3.4 April 15th Map (PDF file)
  • M 3.4 April 15th Intensity Map
  • M 3.1 March 26th Map (PDF file)
  • M 3.0 March 24th Map (PDF file)
  • M 2.95 March 15th Map (PDF file)
  • M 3.35 March 8th Map (PDF file)

  • Initial Mogul Earthquakes in Google Earth *You need Google Earth in your computer.
  • M 3.35 in Google Earth

  • Last updated
     2005 Nevada Seismological Laboratory
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