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Light earthquake: M4.7 quake has struck near Illapel in Chile

Posted by admin on September 22, 2015 0 Comments

Earthquake location -31.5705S, -72.2409WA light earthquake magnitude 4.7 (ml/mb) has struck on Monday, 102 km W of Illapel, Chile (63 miles). The earthquake occurred at a depth of 20.34 km (13 miles) below the earth’s surface. Unique identifier: us20003mig. Ids that are associated to the event: us20003mig. Exact time and date of event in UTC/GMT: 21/09/15 / 2015-09-21 18:17:46 / September 21, 2015 @ 6:17 pm. The 4.7-magnitude earthquake was detected at 13:17:46 / 1:17 pm (local time epicenter). Exact location of event, depth 20.34 km, -72.2409° West, -31.5705° South. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been twenty-four, in the last 10 days one hundred and fourty-one, in the past 30 days one hundred and fourty-one and in the last 365 days one hundred and fifty-two earthquakes of magnitude 3.0 or greater that has occurred nearby. Every year there are an estimated 13,000 light earthquakes in the world.

Questions or comments?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 102 km W of Illapel, Chile.

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More information

Parameter Value Description
Magnitude 4.7 mb The magnitude for the event.
Longitude -72.2409° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -31.5705° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 20.34 km Depth of the event in kilometers.
Place 102km W of Illapel, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-09-21 18:17:46 Time when the event occurred. UTC/GMT
Updated 2015-09-22 14:18:28 Time when the event was most recently updated. UTC/GMT
Timezone offset -300 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 reviewed Indicates whether the event has been reviewed by a human.
Tsunami 0 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 340 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,us, 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 1.033 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.62 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 179 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us20003mig Id of event.
Event Code 20003mig An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20003mig, A comma-separated list of event ids that are associated to an event.

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