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Minor World Earthquakes Magnitude -3.9

Minor earthquake, 3.7 mag strikes near Calama in Chile


Earthquake location -21.9171S, -68.6483WA minor earthquake magnitude 3.7 (ml/mb) has occurred on Friday, 66 kilometers (41 miles) from Calama in Chile. The 3.7-magnitude earthquake has occurred at 21:43:28 / 9:43 pm (local time epicenter). Exact time and date of earthquake 20/12/24 / 2024-12-20 21:43:28 / December 20, 2024 @ 9:43 pm UTC/GMT. The earthquake was roughly at a depth of 118.024 km (73 miles). Unique identifier: us7000p0hl. Ids that are associated to the event: us7000p0hl. Exact location of earthquake, longitude -68.6483 West, latitude -21.9171 South, depth = 118.024 km.

Nearest cities/city/villages to epicentrum/hypocenter was Calama (min 5000 pop). Epicenter of the earthquake was 67 km (41 miles) from Calama (c. 143 100 pop). Nearby country/countries that might be effected, Chile (c. 16 746 000 pop).

There are an estimated 130,000 minor earthquakes in the world each year. In the past 24 hours, there have been eight, in the last 10 days eleven, in the past 30 days seventeen and in the last 365 days ninety earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 3.0 to 4.0 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: 66 km NNE of Calama, Chile.

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More information

Parameter Value Description
Magnitude 3.7 mb The magnitude for the event.
Longitude -68.6483° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -21.9171° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 118.024 km Depth of the event in kilometers.
Place 66 km NNE 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 2024-12-20 21:43:28 Time when the event occurred. UTC/GMT
Updated 2025-01-13 02:30:04 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 211 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 16 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.564 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.35 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 74 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us7000p0hl Id of event.
Event Code 7000p0hl An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000p0hl, A comma-separated list of event ids that are associated to an event.

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