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Magnitude 5.1 BATAN ISLANDS REGION, PHILIPPINES

Sunday, July 22, 2007 at 02:58:57 UTC

Preliminary Earthquake Report

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Magnitude 5.1
Date-Time
  • Sunday, July 22, 2007 at 02:58:57 (UTC) - Coordinated Universal Time
  • Sunday, July 22, 2007 at 10:58:57 AM local time at epicenter

  • Time of Earthquake in other Time Zones
    Location 20.10N 122.01E
    Depth 31 kilometers
    Region BATAN ISLANDS REGION, PHILIPPINES
    Distances 35 km (20 miles) S of Basco, Batan Islands, Philippines
    255 km (160 miles) NE of Laoag, Luzon, Philippines
    555 km (345 miles) S of T'AI-PEI, Taiwan
    615 km (385 miles) N of MANILA, Philippines
    Location Uncertainty Error estimate: horizontal +/- 7.7 km; depth +/- 20.7 km
    Parameters Nst=71, Nph=71, Dmin=508.9 km, Rmss=0.81 sec, Erho=7.7 km, Erzz=20.7 km, Gp=84.7 degrees
    Source USGS NEIC (WDCS-D)
    Event ID usfcab

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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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