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Light earthquake: M4 quake has struck near Copiapo in Chile

Earthquake location -27.2013S, -70.0524WA light earthquake with magnitude 4 (ml/mb) was reported 33 kilometers (21 miles) from Copiapo in Chile on Tuesday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global time and date of event 16/12/15 / 2015-12-16 00:35:58 / December 16, 2015 @ 12:35 am UTC/GMT. The epicenter of the earthquake was roughly 100.32 km (62 miles) below the earth’s surface. The temblor was detected at 21:35:58 / 9:35 pm (local time epicenter). Exact location of earthquake, -70.0524° West, -27.2013° South, depth 100.32 km. Event ids that are associated to the earthquake: us20004hh1. Id of event: us20004hh1.

Close country/countries that might be effected, Chile (c. 16 746 000 pop). The epicenter was 33 km (21 miles) from Copiapó (c. 129 300 pop). Nearest cities/city/villages to epicentrum/hypocenter was Copiapó (min 5000 pop).

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days one and in the last 365 days six earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light earthquakes in the world.

Did you feel anything?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 33 km ENE of Copiapo, Chile.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -70.0524° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -27.2013° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 100.32 km Depth of the event in kilometers.
Place 33km ENE of Copiapo, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-12-16 00:35:58 Time when the event occurred. UTC/GMT
Updated 2015-12-16 00:50:28 Time when the event was most recently updated. UTC/GMT
Timezone offset -180 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 246 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 0.423 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.18 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 130 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 us20004hh1 Id of event.
Event Code 20004hh1 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20004hh1, A comma-separated list of event ids that are associated to an event.

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