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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.2 mag, 35 km NE of Chilecito, Argentina


Earthquake location -28.9731S, -67.2045WA light earthquake magnitude 4.2 (ml/mb) has occurred on Wednesday, 35 kilometers (22 miles) from Chilecito in Argentina. The temblor was picked up at 18:37:35 / 6:37 pm (local time epicenter). Date and time of earthquake in UTC/GMT: 25/07/18 / 2018-07-25 21:37:35 / July 25, 2018 @ 9:37 pm. The earthquake occurred at a depth of 114.69 km (71 miles) below the earth’s surface. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event id: us2000gdx0. Ids that are associated to the earthquake: us2000gdx0. Exact location of event, longitude -67.2045 West, latitude -28.9731 South, depth = 114.69 km.

Close country/countries, Argentina (c. 41 343 000 pop) (That might be effected). Event epicenter was 60 km (37 miles) from La Rioja (c. 162 600 pop), 35 km (22 miles) from Chilecito (c. 42 200 pop), 59 km (37 miles) from Arauco (c. 13 700 pop). Closest city/cities/towns to epicentrum/hypocenter was La Rioja, Arauco, Chilecito (min 5000 pop).

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. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days three and in the last 365 days nine earthquakes of magnitude 3.0 or greater that have been detected nearby.

Did you feel it?

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: 35 km NE of Chilecito, Argentina.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -67.2045° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -28.9731° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 114.69 km Depth of the event in kilometers.
Place 35km NE 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 2018-07-25 21:37:35 Time when the event occurred. UTC/GMT
Updated 2018-08-11 02:57:32 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 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 2.694 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.38 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 39 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 us2000gdx0 Id of event.
Event Code 2000gdx0 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000gdx0, A comma-separated list of event ids that are associated to an event.

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