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Light earthquake: M4.3 quake has struck near San Pedro de Atacama in Chile

Posted by admin on July 21, 2025 0 Comments

Earthquake location -23.8341S, -68.3654WA light earthquake magnitude 4.3 (ml/mb) has occurred on Monday, 103 km S of San Pedro de Atacama, Chile (64 miles). The earthquake was roughly at a depth of 121.348 km (75 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, longitude -68.3654 West, latitude -23.8341 South, depth = 121.348 km. The 4.3-magnitude earthquake was detected at 02:59:43 / 2:59 am (local time epicenter). Event id: us7000qe6c. Ids that are associated to the earthquake: us7000qe6c. Exact time and date of event in UTC/GMT: 21/07/25 / 2025-07-21 02:59:43 / July 21, 2025 @ 2:59 am.

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

Questions or comments?

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 103 km S of San Pedro de Atacama, Chile. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude -68.3654° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -23.8341° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 121.348 km Depth of the event in kilometers.
Place 103 km S of San Pedro de Atacama, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-07-21 02:59:43 Time when the event occurred. UTC/GMT
Updated 2025-07-21 04:15:51 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 284 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 28 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.895 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 103 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 us7000qe6c Id of event.
Event Code 7000qe6c An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000qe6c, A comma-separated list of event ids that are associated to an event.

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