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Preliminary Earthquake Report

Magnitude 4.1 GUAM REGION
Friday, April 13, 2012 at 23:49:15 UTC

Magnitude 4.1
Date-Time Friday, April 13, 2012 at 23:49:15 (UTC) - Coordinated Universal Time
Saturday, April 14, 2012 at 09:49:15 AM local time at epicenter
Time of Earthquake in other Time Zones
Location 12.73N 145.44E
Depth 35 kilometers
Region GUAM REGION
Distances 111 km (69 miles) SE of HAGATNA, Guam
159 km (99 miles) S of Rota, Northern Mariana Islands
274 km (170 miles) S of SAIPAN, Northern Mariana Islands
401 km (249 miles) S of Anatahan, Northern Mariana Islands
Location Uncertainty Error estimate
Parameters Nst=16, Nph=16, Dmin=113.3 km, Rmss=0.99 sec, Erho=19.0 km, Erzz=0 km, Gp=148.1 degrees
Source USGS NEIC (WDCS-D)
Event ID us2012zig7

Earthquake Location

Earthquake Location

Historic Seismicity