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Light earthquake 4.5 mag, 35 km SSE of Calama, Chile


Earthquake location -22.7649S, -68.813WA light earthquake with magnitude 4.5 (ml/mb) was reported 35 kilometers (22 miles) from Calama in Chile on Monday. The epicenter was at a depth of 117.6 km (73 miles). Global date and time of event UTC/GMT: 17/09/18 / 2018-09-17 16:29:16 / September 17, 2018 @ 4:29 pm. Exact location of event, longitude -68.813 West, latitude -22.7649 South, depth = 117.6 km. The temblor was detected at 12:29:16 / 12:29 pm (local time epicenter). Unique identifier: us2000hfxa. Ids that are associated to the event: us2000hfxa. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Close country/countries that might be effected, Chile (c. 16 746 000 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Calama. The epicenter was 36 km (23 miles) from Calama (c. 143 100 pop).

In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days seven and in the last 365 days fifty-one earthquakes of magnitude 3.0 or greater that has struck near. 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.

How would you describe the shaking?

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: 35 km SSE of Calama, Chile. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -68.813° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -22.7649° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 117.6 km Depth of the event in kilometers.
Place 35km SSE 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 2018-09-17 16:29:16 Time when the event occurred. UTC/GMT
Updated 2018-09-17 17:19:59 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 312 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 0.176 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.7 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 81 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 us2000hfxa Id of event.
Event Code 2000hfxa An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000hfxa, A comma-separated list of event ids that are associated to an event.

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