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Light earthquake, 4.5 mag has occurred near Calama in Chile

Posted by admin on December 16, 2025 0 Comments

Earthquake location -21.7762S, -68.9131WA light earthquake with magnitude 4.5 (ml/mb) was detected on Monday, 75 kilometers (47 miles) from Calama in Chile. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Date and time of earthquake in UTC/GMT: 15/12/25 / 2025-12-15 06:47:11 / December 15, 2025 @ 6:47 am. Exact location of earthquake, longitude -68.9131 West, latitude -21.7762 South, depth = 98.02 km. The epicenter of the earthquake was roughly 98.02 km (61 miles) below the earth’s surface. Event id: us6000ruxj. Ids that are associated to the earthquake: us6000ruxj. The temblor was reported at 06:47:11 / 6:47 am (local time epicenter).

The epicenter was 76 km (47 miles) from Calama (c. 143 100 pop). Country/countries that might be effected, Chile (c. 16 746 000 pop). Nearest cities/city/towns to hypocenter/epicentrum was Calama (min 5000 pop).

There are an estimated 13,000 light earthquakes in the world each year. In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days eleven and in the last 365 days one hundred and eighteen earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel it?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 75 km N of Calama, Chile.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -68.9131° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -21.7762° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 98.02 km Depth of the event in kilometers.
Place 75 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 2025-12-15 06:47:11 Time when the event occurred. UTC/GMT
Updated 2025-12-16 07:17:26 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 312 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 45 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.306 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.9 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 61 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 us6000ruxj Id of event.
Event Code 6000ruxj An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000ruxj, A comma-separated list of event ids that are associated to an event.

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