Preliminary Earthquake Report

Magnitude 4.4 COLOMBIA
Tuesday, January 31, 2012 at 14:52:48 UTC

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Magnitude 4.4
Date-Time Tuesday, January 31, 2012 at 14:52:48 (UTC) - Coordinated Universal Time
Tuesday, January 31, 2012 at 09:52:48 AM local time at epicenter
Time of Earthquake in other Time Zones
Location 5.09N 72.97W
Depth 57 kilometers
Region COLOMBIA
Distances 65 km (40 miles) SE of Tunja, Colombia
70 km (43 miles) WSW of Yopal, Colombia
127 km (79 miles) NE of Villavicencio, Colombia
134 km (83 miles) ENE of BOGOTA, Colombia
Location Uncertainty Error estimate
Parameters Nst=15, Nph=15, Dmin=93.3 km, Rmss=0.89 sec, Erho=25.3 km, Erzz=11.9 km, Gp=197.2 degrees
Source USGS NEIC (WDCS-D)
Event ID us2012wkaq

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