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Earthquake Hazards Program

Magnitude 6.8 CAYMAN ISLANDS REGION
Tuesday, December 14, 2004 at 23:20:13 UTC

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

World Location

Regional Location

Magnitude 6.8
Date-Time Tuesday, December 14, 2004 at 23:20:13 (UTC) - Coordinated Universal Time
Tuesday, December 14, 2004 at 06:20:13 PM local time at epicenter
Time of Earthquake in other Time Zones
Location 18.98N 81.38W
Depth 10 kilometers
Region CAYMAN ISLANDS REGION
Reference 35 km (20 miles) S of GEORGE TOWN, Cayman Islands
320 km (200 miles) ENE of Swan Island
365 km (225 miles) SSW of Cienfuegos, Cuba
760 km (475 miles) S of Miami, Florida
Location Quality Error estimate: horizontal +/- 3.4 km; depth fixed by location program
Location Quality
Parameters
Nst=584, Nph=584, Dmin=734.5 km, Rmss=0.99 sec, Erho=3.4 km, Erzz=0 km, Gp=21.8 degrees
Source USGS NEIC (WDCS-D)
Remarks Felt (VI) at Bodden Town and West Bay; (V) at George Town; (III-V) in many parts of Cuba. Felt throughout Grand Cayman. Also felt at Cancun, Mexico and Kingston, Jamaica.

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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->

 


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