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Minor World Earthquakes Magnitude -3.9

Minor earthquake, 3.9 mag strikes near Illapel in Chile


Earthquake location -31.475S, -71.7264WA minor earthquake magnitude 3.9 (ml/mb) strikes 56 kilometers (35 miles) from Illapel in Chile on Thursday. Exact location of earthquake, -71.7264° West, -31.475° South, depth 21.87 km. Global date and time of event UTC/GMT: 25/02/16 / 2016-02-25 18:46:51 / February 25, 2016 @ 6:46 pm. The 3.9-magnitude earthquake was detected at 15:46:51 / 3:46 pm (local time epicenter). The epicenter of the earthquake was roughly 21.87 km (14 miles) below the earth’s surface. Event id: us10004tua. Ids that are associated to the earthquake: us10004tua.

Event epicenter was 56 km (35 miles) from Illapel (c. 22 800 pop), 80 km (50 miles) from Salamanca (c. 13 300 pop). Closest city/cities/towns to epicentrum/hypocenter was Salamanca, Illapel (min 5000 pop). Nearby country/countries that might be effected, Chile (c. 16 746 000 pop).

In the past 24 hours, there have been four, in the last 10 days nine, in the past 30 days twenty-six and in the last 365 days four hundred and seventy-six earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. Every year there are an estimated 130,000 minor earthquakes in the world.

How would you describe the shaking?

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. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 56 km WNW of Illapel, Chile.

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More information

Parameter Value Description
Magnitude 3.9 mb The magnitude for the event.
Longitude -71.7264° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -31.475° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 21.87 km Depth of the event in kilometers.
Place 56km WNW of Illapel, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2016-02-25 18:46:51 Time when the event occurred. UTC/GMT
Updated 2016-03-09 22:02:34 Time when the event was most recently updated. UTC/GMT
Timezone offset -180 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 234 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 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.677 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.61 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 173 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 us10004tua Id of event.
Event Code 10004tua An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10004tua, A comma-separated list of event ids that are associated to an event.

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