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Light earthquake: M4.1 quake has struck near Vallenar in Chile

Posted by admin on December 4, 2025 0 Comments

Earthquake location -28.8516S, -71.5091WA light earthquake magnitude 4.1 (ml/mb) has struck on Wednesday, 79 kilometers (49 miles) from Vallenar in Chile. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of earthquake 03/12/25 / 2025-12-03 10:54:05 / December 3, 2025 @ 10:54 am UTC/GMT. The 4.1-magnitude earthquake has occurred at 10:54:05 / 10:54 am (local time epicenter). Event id: us6000rs73. Ids that are associated to the earthquake: us6000rs73. Exact location of event, longitude -71.5091 West, latitude -28.8516 South, depth = 28.498 km. The earthquake occurred at a depth of 28.498 km (18 miles).

Country/countries that might be effected, Chile (c. 16 746 000 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Vallenar. The epicenter was 79 km (49 miles) from Vallenar (c. 44 900 pop).

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 four and in the last 365 days thirty-three 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.

Did you feel anything?

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. 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: 79 km WSW of Vallenar, Chile.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -71.5091° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -28.8516° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 28.498 km Depth of the event in kilometers.
Place 79 km WSW of Vallenar, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-12-03 10:54:05 Time when the event occurred. UTC/GMT
Updated 2025-12-04 05:46:16 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 259 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 14 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.726 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.37 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 157 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 us6000rs73 Id of event.
Event Code 6000rs73 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000rs73, A comma-separated list of event ids that are associated to an event.

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