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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.3 mag, 54 km W of Illapel, Chile


Earthquake location -31.549S, -71.7297WA light earthquake with magnitude 4.3 (ml/mb) was reported 54 kilometers (34 miles) from Illapel in Chile on Saturday. Date and time of earthquake in UTC/GMT: 21/11/15 / 2015-11-21 19:37:58 / November 21, 2015 @ 7:37 pm. The 4.3-magnitude earthquake was detected at 16:37:58 / 4:37 pm (local time epicenter). All ids that are associated to the event: us10004057. Unique identifier: us10004057. Exact location of earthquake, longitude -71.7297 West, latitude -31.549 South, depth = 30.09 km. The earthquake occurred at a depth of 30.09 km (19 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Nearest cities/city/towns to hypocenter/epicentrum was Salamanca, Illapel (min 5000 pop). Nearby country/countries, Chile (c. 16 746 000 pop) (That might be effected). Event epicenter was 54 km (33 miles) from Illapel (c. 22 800 pop), 77 km (48 miles) from Salamanca (c. 13 300 pop).

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. In the past 24 hours, there have been eighteen, in the last 10 days twenty-five, in the past 30 days fourty-five and in the last 365 days four hundred and nine earthquakes of magnitude 3.0 or greater that have been detected in the same area.

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 54 km W of Illapel, Chile. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude -71.7297° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -31.549° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 30.09 km Depth of the event in kilometers.
Place 54km W 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 2015-11-21 19:37:58 Time when the event occurred. UTC/GMT
Updated 2015-12-13 03:58:45 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 284 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 0.876 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 138 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mwr The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us10004057 Id of event.
Event Code 10004057 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10004057, A comma-separated list of event ids that are associated to an event.

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