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Media Advisory: Colorado and Virginia Earthquake Press Conference


Media Advisory: Colorado and Virginia Earthquake Press Conference

WHAT: U.S. Geological Survey seismologists answer questions about the magnitude 5.3 felt in and around Trinidad, Colo., and the magnitude 5.8 in Central Va. that was felt across the Eastern Seaboard today.

WHO: USGS seismologists from the USGS Earthquake Information Center in Golden, Colo.
Harley Benz, Scientist-in-Charge, USGS Earthquake Information Center
David Wald, USGS Geophysicist
Tony Crone, USGS Geophysicist

WHEN: 6:15 p.m. EST, 4:15 p.m. MDT and 3:15 p.m. PDT

WHERE: Reporters may call 1-800-988-9538 and use access code 4378298# to access the live teleconference.

The latest event information may be found online:

Citizens who felt the earthquake can go online and report their observations on the USGS Did You Feel It? website.

USGS Newsroom


More information

Parameter Value Description
Magnitude mb The magnitude for the event.
Longitude ° East Decimal degrees longitude. Negative values for western longitudes.
Latitude ° North Decimal degrees latitude. Negative values for southern latitudes.
Depth km Depth of the event in kilometers.
Place Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 1970-01-01 00:00:00 Time when the event occurred. UTC/GMT
Updated 1970-01-01 00:00:00 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt The total number of felt reports
CDI The maximum reported intensity for the event.
MMI The maximum estimated instrumental intensity for the event.
Alert Level The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status Indicates whether the event has been reviewed by a human.
Tsunami This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG A number describing how significant the event is. Larger numbers indicate a more significant event.
Network The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources A comma-separated list of network contributors.
Number of Stations Used The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type The method or algorithm used to calculate the preferred magnitude for the event.
Event Type Type of seismic event.
Event ID Id of event.
Event Code An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS A comma-separated list of event ids that are associated to an event.

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