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Light earthquake: M4 quake has struck near Calama in Chile


Earthquake location -21.8535S, -68.7351WA light earthquake magnitude 4 (ml/mb) strikes 70 kilometers (43 miles) from Calama in Chile on Tuesday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4-magnitude earthquake was detected at 00:58:12 / 12:58 am (local time epicenter). Exact location of earthquake, -68.7351° West, -21.8535° South, depth 118.42 km. The earthquake occurred at a depth of 118.42 km (74 miles) below the earth’s surface. Date and time of earthquake in UTC/GMT: 19/11/19 / 2019-11-19 04:58:12 / November 19, 2019 @ 4:58 am. Event id: us700069s3. Ids that are associated to the earthquake: us700069s3.

Country/countries that might be effected, Chile (c. 16 746 000 pop). Epicenter of the event was 70 km (43 miles) from Calama (c. 143 100 pop). Nearest cities/city/villages to epicentrum/hypocenter was Calama (min 5000 pop).

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days seven and in the last 365 days eighty-two earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light earthquakes in the world each year.

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. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 70 km NNE of Calama, Chile.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -68.7351° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -21.8535° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 118.42 km Depth of the event in kilometers.
Place 70km NNE of Calama, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2019-11-19 04:58:12 Time when the event occurred. UTC/GMT
Updated 2019-11-19 05:33:54 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 0.474 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 69 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 us700069s3 Id of event.
Event Code 700069s3 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us700069s3, A comma-separated list of event ids that are associated to an event.

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