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Light earthquake: M4 quake has struck near Illapel in Chile



Earthquake location -31.736S, -71.254WA light earthquake magnitude 4 (ml/mb) has struck on Sunday, 14 kilometers (9 miles) from Illapel in Chile. The epicenter of the earthquake was roughly 54.4 km (34 miles) below the earth’s surface. Global time and date of event 18/12/16 / 2016-12-18 16:25:11 / December 18, 2016 @ 4:25 pm UTC/GMT. Exact location of event, longitude -71.254 West, latitude -31.736 South, depth = 54.4 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was reported at 12:25:11 / 12:25 pm (local time epicenter). Id of earthquake: us200082cw. Event ids that are associated: us200082cw.

Nearby country/countries that might be effected, Chile (c. 16 746 000 pop). Closest city/cities/towns to epicentrum/hypocenter was La Ligua, Salamanca, Illapel (min 5000 pop). Earthquake epicenter was 80 km (50 miles) from La Ligua (c. 24 900 pop), 14 km (9 miles) from Illapel (c. 22 800 pop), 28 km (17 miles) from Salamanca (c. 13 300 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 four, in the past 30 days eight and in the last 365 days one hundred and four 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 the quake?

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: 14 km SW of Illapel, Chile.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -71.254° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -31.736° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 54.4 km Depth of the event in kilometers.
Place 14km SW 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 2016-12-18 16:25:11 Time when the event occurred. UTC/GMT
Updated 2016-12-18 17:58:58 Time when the event was most recently updated. UTC/GMT
Timezone offset -240 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 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 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 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 us200082cw Id of event.
Event Code 200082cw An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us200082cw, A comma-separated list of event ids that are associated to an event.

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