Magnitude 6.4 COSTA RICA
Saturday, November 20, 2004 at 08:07:22 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
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Magnitude | 6.4 | |
| Date-Time |
Saturday, November 20, 2004 at 08:07:22 (UTC) - Coordinated Universal Time Saturday, November 20, 2004 at 02:07:22 AM local time at epicenter Time of Earthquake in other Time Zones |
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| Location | 9.59N 84.19W | ||
| Depth | 16 kilometers | ||
| Region | COSTA RICA | ||
| Reference |
40 km (25 miles) SSW of SAN JOSE, Costa Rica 80 km (50 miles) ESE of Puntarenas, Costa Rica 135 km (85 miles) WSW of Limon, Costa Rica 155 km (95 miles) NW of Golfito, Costa Rica |
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| Location Quality | Error estimate: horizontal +/- 3.6 km; depth fixed by location program | ||
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Location Quality Parameters |
Nst=514, Nph=514, Dmin=113.3 km, Rmss=0.90 sec, Erho=3.6 km, Erzz=0 km, Gp=31.0 degrees | ||
| Source | USGS NEIC (WDCS-D) | ||
| Remarks | Eight people killed and several injured; 526 buildings damaged or destroyed; many roads and bridges damaged; some landslides occurred in the San Jose area. Water lines broke at Parrita and power outages occurred at Quepos. Felt (VII) at Parrita and Quepos; (VI) at Damas, Failes and Jaco; (V) at Alajuela, Monterrey, Naranjo, Puntarenas, San Isidro, Turrialba and Zapote; (IV) at Batan, Bribri, Limon, Los Chiles, Nicoya, Palmar Sur and Upala. Felt in much of 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
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