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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4 mag, 70 km WNW of Illapel, Chile



Earthquake location -31.4683S, -71.886WA light earthquake magnitude 4 (ml/mb) has struck on Thursday, 70 kilometers (43 miles) from Illapel in Chile. Exact location of event, longitude -71.886 West, latitude -31.4683 South, depth = 28.43 km. The earthquake occurred at a depth of 28.43 km (18 miles) below the earth’s surface. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event ids that are associated to the earthquake: us100048rv. Id of event: us100048rv. The temblor was reported at 17:02:34 / 5:02 pm (local time epicenter). Global date and time of event UTC/GMT: 17/12/15 / 2015-12-17 22:02:34 / December 17, 2015 @ 10:02 pm.

Closest city/cities/towns to epicentrum/hypocenter was Illapel (min 5000 pop). Event epicenter was 70 km (44 miles) from Illapel (c. 22 800 pop). Close country/countries that might be effected, Chile (c. 16 746 000 pop).

In the past 24 hours, there have been sixteen, in the last 10 days twenty-four, in the past 30 days fourty-four and in the last 365 days four hundred and fourty-nine earthquakes of magnitude 3.0 or greater that has occurred nearby. Each year there are an estimated 13,000 light quakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel anything?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home 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: 70 km WNW of Illapel, Chile.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -71.886° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -31.4683° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 28.43 km Depth of the event in kilometers.
Place 70km 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 2015-12-17 22:02:34 Time when the event occurred. UTC/GMT
Updated 2016-01-10 01:44:05 Time when the event was most recently updated. UTC/GMT
Timezone offset -300 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 246 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 0.82 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.53 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 193 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 us100048rv Id of event.
Event Code 100048rv An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us100048rv, A comma-separated list of event ids that are associated to an event.

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