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Light earthquake, 4.2 mag was detected near Coquimbo in Chile


Earthquake location -30.3947S, -72.154WA light earthquake magnitude 4.2 (ml/mb) strikes 92 kilometers (57 miles) from Coquimbo in Chile on Sunday. The 4.2-magnitude earthquake was detected at 22:03:31 / 10:03 pm (local time epicenter). Exact location, longitude -72.154° West, latitude -30.3947° South, depth = 12.35 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Unique identifier: us20003mb5. Ids that are associated to the event: us20003mb5. Exact time and date of event in UTC/GMT: 21/09/15 / 2015-09-21 03:03:31 / September 21, 2015 @ 3:03 am. The earthquake occurred at a depth of 12.35 km (8 miles).

Nearest cities/city/towns to hypocenter/epicentrum was Coquimbo (min 5000 pop). Nearby country/countries that might be effected, Chile (c. 16 746 000 pop). Earthquake epicenter was 92 km (57 miles) from Coquimbo (c. 161 300 pop).

There are an estimated 13,000 light quakes in the world each year. In the past 24 hours, there have been seven, in the last 10 days seventy-eight, in the past 30 days eighty-three and in the last 365 days one hundred and three earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

How would you describe the shaking?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 92 km WSW of Coquimbo, Chile. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -72.154° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -30.3947° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 12.35 km Depth of the event in kilometers.
Place 92km WSW of Coquimbo, 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 03:03:31 Time when the event occurred. UTC/GMT
Updated 2015-09-21 03:40:51 Time when the event was most recently updated. UTC/GMT
Timezone offset -300 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 0 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 271 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 0.527 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.94 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 137 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 us20003mb5 Id of event.
Event Code 20003mb5 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20003mb5, A comma-separated list of event ids that are associated to an event.

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