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Light earthquake: M4.2 quake has struck near Calama in Chile

Posted by admin on August 1, 2025 0 Comments

Earthquake location -21.8462S, -68.8007WA light earthquake magnitude 4.2 (ml/mb) strikes 68 kilometers (42 miles) from Calama in Chile on Friday. Event id: us6000qx78. Ids that are associated to the earthquake: us6000qx78. The 4.2-magnitude earthquake has occurred at 04:13:56 / 4:13 am (local time epicenter). The earthquake occurred at a depth of 129.902 km (81 miles) below the earth’s surface. Exact location of event, depth 129.902 km, -68.8007° West, -21.8462° South. Exact time and date of earthquake 01/08/25 / 2025-08-01 04:13:56 / August 1, 2025 @ 4:13 am UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Nearest cities/city/towns to hypocenter/epicentrum was Calama (min 5000 pop). Earthquake epicenter was 69 km (43 miles) from Calama (c. 143 100 pop). Country/countries that might be effected, Chile (c. 16 746 000 pop).

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

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 68 km N of Calama, Chile. This data 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 -68.8007° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -21.8462° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 129.902 km Depth of the event in kilometers.
Place 68 km N of Calama, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-08-01 04:13:56 Time when the event occurred. UTC/GMT
Updated 2025-08-01 23:08:29 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 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 21 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.413 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.21 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 56 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 us6000qx78 Id of event.
Event Code 6000qx78 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000qx78, A comma-separated list of event ids that are associated to an event.

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