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Earthquake Hazards Program

Magnitude 4.0 TANZANIA

Thursday, July 19, 2007 at 21:07:19 UTC

Preliminary Earthquake Report

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Magnitude 4.0
Date-Time
  • Thursday, July 19, 2007 at 21:07:19 (UTC) - Coordinated Universal Time
  • Friday, July 20, 2007 at 12:07:19 AM local time at epicenter

  • Time of Earthquake in other Time Zones
    Location 2.82S 36.17E
    Depth 10.0 kilometers
    Region TANZANIA
    Distances 85 km (50 miles) NW of Arusha, Tanzania
    185 km (115 miles) SSW of NAIROBI, Kenya
    280 km (175 miles) S of Nakuru, Kenya
    565 km (350 miles) NW of DAR ES SALAAM, Tanzania
    Location Uncertainty Error estimate: horizontal +/- 45.5 km; depth fixed by location program
    Parameters Nst=6, Nph=6, Dmin=222.2 km, Rmss=0.86 sec, Erho=45.5 km, Erzz=0 km, Gp=-1.0 degrees
    Source USGS NEIC (WDCS-D)
    Remarks Felt at Nairobi.
    Event ID usezcq

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    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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