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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.6 mag, 55 km W of La Ligua, Chile



Earthquake location -32.5096S, -71.8126WA light earthquake with magnitude 4.6 (ml/mb) was detected on Sunday, 55 kilometers (34 miles) from La Ligua in Chile. The earthquake was roughly at a depth of 17.28 km (11 miles). Global time and date of event 20/09/15 / 2015-09-20 07:10:37 / September 20, 2015 @ 7:10 am UTC/GMT. Exact location, longitude -71.8126° West, latitude -32.5096° South, depth = 17.28 km. Event ids that are associated to the earthquake: us20003m4e. Id of event: us20003m4e. The temblor was reported at 02:10:37 / 2:10 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Nearest cities/city/villages to epicentrum/hypocenter was Llaillay, Limache, Villa Alemana (min 5000 pop). Close country/countries, Chile (c. 16 746 000 pop) (That might be effected). The epicenter was 62 km (39 miles) from Viña del Mar (c. 294 600 pop), 61 km (38 miles) from Valparaíso (c. 282 400 pop), 69 km (43 miles) from Quilpué (c. 130 300 pop), 72 km (45 miles) from Villa Alemana (c. 97 300 pop), 67 km (42 miles) from Quillota (c. 67 800 pop), 64 km (39 miles) from Hacienda La Calera (c. 49 100 pop), 76 km (47 miles) from Limache (c. 35 900 pop).

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

Did you feel it?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 55 km W of La Ligua, Chile.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude -71.8126° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -32.5096° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 17.28 km Depth of the event in kilometers.
Place 55km W of La Ligua, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-09-20 07:10:37 Time when the event occurred. UTC/GMT
Updated 2015-10-16 11:42:28 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 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 0.532 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.6 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 146 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 us20003m4e Id of event.
Event Code 20003m4e An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20003m4e, A comma-separated list of event ids that are associated to an event.

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