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Light earthquake, 4.2 mag has occurred near Illapel in Chile

Posted by admin on September 20, 2015 0 Comments

Earthquake location -31.8855S, -72.3477WA light earthquake with magnitude 4.2 (ml/mb) was reported 115 km WSW of Illapel, Chile (71 miles) on Sunday. Exact location, longitude -72.3477° West, latitude -31.8855° South, depth = 5 km. The epicenter was at a depth of 5 km (3 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was picked up at 04:20:04 / 4:20 am (local time epicenter). Event id: us20003m5d. Ids that are associated to the earthquake: us20003m5d. Global date and time of event UTC/GMT: 20/09/15 / 2015-09-20 09:20:04 / September 20, 2015 @ 9:20 am.

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

How would you describe the shaking?

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 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: 115 km WSW of Illapel, Chile.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -72.3477° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -31.8855° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 5 km Depth of the event in kilometers.
Place 115km WSW 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 2015-09-20 09:20:04 Time when the event occurred. UTC/GMT
Updated 2015-09-20 20:40:00 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 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 1.283 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.49 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 180 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mwr The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us20003m5d Id of event.
Event Code 20003m5d An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20003m5d, A comma-separated list of event ids that are associated to an event.

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