Magnitude 4.5 VIRGINIA
2003 December 09 20:59:14 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
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Magnitude | 4.5 | |
| Date-Time |
Tuesday, December 09, 2003 at 20:59:14 (UTC) - Coordinated Universal Time Tuesday, December 09, 2003 at 03:59:14 PM local time at epicenter Time of Earthquake in other Time Zones |
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| Location | 37.60N 77.93W | ||
| Depth | 5.0 kilometers | ||
| Region | VIRGINIA | ||
| Reference |
40 km (25 miles) W of RICHMOND, Virginia 50 km (35 miles) NE of Farmville, Virginia 60 km (40 miles) NW of Petersburg, Virginia 70 km (40 miles) SE of Charlottesville, Virginia |
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| Location Quality | Error estimate: horizontal +/- 10.3 km; depth fixed by location program | ||
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Location Quality Parameters |
Nst=15, Nph=15, Dmin=63.3 km, Rmss=0.93 sec, Erho=10.3 km, Erzz=0 km, Gp=167.7 degrees | ||
| Source | USGS NEIC (WDCS-D) | ||
| Remarks | This was a complex event consisting of two sub-events occurring 12 seconds apart. Slight damage (VI) at Bremo Bluff and Kents Store. Felt (V) at Columbia, Fork Union, Goochland, Oilville, Rockville and Sandy Hook; (IV) at Appomattox, Amelia Court House, Amherst, Blackstone, Bumpass, Charlottesville, Chester, Chesterfield, Colonial Heights, Cumberland, Dillwyn, Farmville, Glen Allen, Lawrenceville, Louisa, Manakin Sabot, Mechanicsville, Midlothian, Mineral, Palmyra, Petersburg, Powhatan, Richmond, Scottsville and Spotsylvania; (III) at Alexandria, Fairfax, Falls Church, Fredericksburg, Lexington, Lynchburg, McLean, Roanoke, Staunton and Vienna. Also felt (III) at Bethesda, Rockville and Silver Spring, Maryland and at Rocky Mount and Winston Salem, North Carolina. Felt (II) at Chapel Hill, Greensboro and Raleigh, North Carolina and at Washington, DC. Felt in much of Maryland and Virginia. Also felt in north-central North Carolina and a few areas of Delaware, New Jersey, New York, Pennsylvania and West Virginia. |
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Theoretical P-Wave Travel Times
Earthquake Information for VIRGINIA
Current information about the rate at which earthquakes occur in different areas, and on how far strong shaking extends from the earthquake source. Earthquakes: Frequently Asked Questions
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USGS National Seismic Hazard Mapping Project
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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