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Light earthquake: M4.5 quake has struck near Arica in Chile

Posted by admin on October 19, 2018 0 Comments

Earthquake location -18.3843S, -70.5217WA light earthquake magnitude 4.5 (ml/mb) has occurred on Friday, 25 kilometers (16 miles) from Arica in Chile. The 4.5-magnitude earthquake has occurred at 00:17:32 / 12:17 am (local time epicenter). Exact location of earthquake, longitude -70.5217 West, latitude -18.3843 South, depth = 73.87 km. Exact time and date of event in UTC/GMT: 19/10/18 / 2018-10-19 05:17:32 / October 19, 2018 @ 5:17 am. The earthquake occurred at a depth of 73.87 km (46 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event id: us1000he9f. Ids that are associated to the earthquake: us1000he9f.

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Tacna, Arica. Close country/countries that might be effected, Chile (c. 16 746 000 pop), Peru (c. 29 907 000 pop). Epicenter of the earthquake was 50 km (31 miles) from Tacna (c. 280 100 pop), 26 km (16 miles) from Arica (c. 186 000 pop).

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

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 25 km WNW of Arica, Chile.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -70.5217° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -18.3843° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 73.87 km Depth of the event in kilometers.
Place 25km WNW of Arica, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-10-19 05:17:32 Time when the event occurred. UTC/GMT
Updated 2018-10-19 05:36:45 Time when the event was most recently updated. UTC/GMT
Timezone offset -300 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 0.171 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.98 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 143 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 us1000he9f Id of event.
Event Code 1000he9f An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000he9f, A comma-separated list of event ids that are associated to an event.

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