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Earthquake Hazards Program

Magnitude 5.0 OWEN FRACTURE ZONE REGION

Tuesday, April 21, 2009 at 20:18:32 UTC

Preliminary Earthquake Report

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Magnitude 5.0
Date-Time
  • Tuesday, April 21, 2009 at 20:18:32 (UTC) - Coordinated Universal Time
  • Wednesday, April 22, 2009 at 12:18:32 AM local time at epicenter

  • Time of Earthquake in other Time Zones
    Location 14.37N 56.22E
    Depth 10 kilometers
    Region OWEN FRACTURE ZONE REGION
    Distances 355 km (220 miles) ENE of Qalansiyah, Socotra Island, Yemen
    375 km (230 miles) SE of Salalah, Oman
    1290 km (800 miles) E of SANA, Yemen
    Location Uncertainty Error estimate: horizontal +/- 10.2 km; depth fixed by location program
    Parameters Nst=99, Nph=99, Dmin=2575.8 km, Rmss=1.38 sec, Erho=10.2 km, Erzz=0 km, Gp=99.0 degrees
    Source USGS NEIC (WDCS-D)
    Event ID usfscg

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    Historic Seismicity

    Theoretical P-Wave Travel Times

     Historic Moment Tensor Solutions

    Phase (Arrival Time) Data

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    Earthquakes: Frequently Asked Questions

    NB: The official magnitude for this earthquake is indicated at the top of this page. This was the best available estimate of the earthquake's size, at the time that this page was created. Other magnitudes associated with web pages linked from here are those determined at various times following the earthquake with different types of seismic data. Although, given the data used, they are legitimate estimates of magnitude they are not considered the official magnitude.

    The region name is an automatically generated name from the Flinn-Engdahl (F-E) seismic and geographical regionalization scheme. The boundaries of these regions are defined at one-degree intervals and therefore differ from irregular political boundaries. More->

    Preliminary Earthquake Report
    U.S. Geological Survey, National Earthquake Information Center
    World Data Center for Seismology, Denver


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