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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.6 mag, 83 km WSW of Illapel, Chile

Posted by admin on October 8, 2015 0 Comments

Earthquake location -31.9247S, -71.9765WA light earthquake magnitude 4.6 (ml/mb) has occurred on Thursday, 83 kilometers (52 miles) from Illapel in Chile. The epicenter was at a depth of 10 km (6 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event id: us10003jj1. Ids that are associated to the earthquake: us10003jj1. Exact location, longitude -71.9765° West, latitude -31.9247° South, depth = 10 km. Global date and time of event UTC/GMT: 18/09/15 / 2015-09-18 03:38:11 / September 18, 2015 @ 3:38 am. The 4.6-magnitude earthquake has occurred at 22:38:11 / 10:38 pm (local time epicenter).

Country/countries that might be effected, Chile (c. 16 746 000 pop). Earthquake epicenter was 91 km (57 miles) from La Ligua (c. 24 900 pop), 83 km (51 miles) from Illapel (c. 22 800 pop), 97 km (60 miles) from Salamanca (c. 13 300 pop). Nearest cities/city/towns to hypocenter/epicentrum was Salamanca, La Ligua, Illapel (min 5000 pop).

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. In the past 24 hours, there have been one hundred and eighty, in the last 10 days two hundred and two, in the past 30 days two hundred and two and in the last 365 days two hundred and nineteen earthquakes of magnitude 3.0 or greater that have been detected nearby.

Did you feel it?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 83 km WSW of Illapel, Chile. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude -71.9765° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -31.9247° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 83km WSW 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 2015-09-18 03:38:11 Time when the event occurred. UTC/GMT
Updated 2015-10-08 04:18:58 Time when the event was most recently updated. UTC/GMT
Timezone offset -300 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 326 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 1.131 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.77 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 103 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 us10003jj1 Id of event.
Event Code 10003jj1 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10003jj1, A comma-separated list of event ids that are associated to an event.

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