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Earthquake Hazards Program

Magnitude 6.9 NEAR THE COAST OF NICARAGUA
Saturday, October 09, 2004 at 21:26:53 UTC

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

World Location

Regional Location

Magnitude 6.9
Date-Time Saturday, October 09, 2004 at 21:26:53 (UTC) - Coordinated Universal Time
Saturday, October 09, 2004 at 03:26:53 PM local time at epicenter
Time of Earthquake in other Time Zones
Location 11.42N 86.65W
Depth 35 kilometers
Region NEAR THE COAST OF NICARAGUA
Reference 85 km (50 miles) SSW of MANAGUA, Nicaragua
90 km (55 miles) W of Rivas, Nicaragua
95 km (60 miles) SW of Granada, Nicaragua
1605 km (1000 miles) ESE of MEXICO CITY, D.F., Mexico
Location Quality Error estimate: horizontal +/- 5.8 km; depth fixed by location program
Location Quality
Parameters
Nst=379, Nph=379, Dmin=224.5 km, Rmss=1.30 sec, Erho=5.8 km, Erzz=0 km, Gp=33.6 degrees
Source USGS NEIC (WDCS-D)
Remarks Felt at Managua and much of Nicaragua. Felt (IV) at San Salvador, El Salvador. Felt as far north as Tegucigalpa, Honduras and as far south as San Jose, Costa Rica.

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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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