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Light earthquake: M4.1 quake has struck near Chilecito in Argentina



Earthquake location -28.819S, -67.3663WA light earthquake with magnitude 4.1 (ml/mb) was reported 40 kilometers (25 miles) from Chilecito in Argentina on Thursday. Exact location of event, longitude -67.3663 West, latitude -28.819 South, depth = 163.32 km. Global time and date of event 04/05/17 / 2017-05-04 05:42:33 / May 4, 2017 @ 5:42 am UTC/GMT. The 4.1-magnitude earthquake was detected at 02:42:33 / 2:42 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter of the earthquake was roughly 163.32 km (101 miles) below the earth’s surface. Id of earthquake: us10008p5r. Event ids that are associated: us10008p5r.

Epicenter of the event was 83 km (51 miles) from La Rioja (c. 162 600 pop), 40 km (25 miles) from Chilecito (c. 42 200 pop), 86 km (54 miles) from Tinogasta (c. 14 500 pop), 62 km (38 miles) from Arauco (c. 13 700 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Tinogasta, La Rioja, Arauco. Nearby country/countries, Argentina (c. 41 343 000 pop) (That might be effected).

There are an estimated 13,000 light quakes in the world each year. 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 twelve earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Questions or comments?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 40 km NNE of Chilecito, Argentina.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -67.3663° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -28.819° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 163.32 km Depth of the event in kilometers.
Place 40km NNE of Chilecito, Argentina Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-05-04 05:42:33 Time when the event occurred. UTC/GMT
Updated 2017-05-04 07:11:58 Time when the event was most recently updated. UTC/GMT
Timezone offset -180 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 259 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 2.518 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.68 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 48 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 us10008p5r Id of event.
Event Code 10008p5r An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10008p5r, A comma-separated list of event ids that are associated to an event.

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