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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.2 quake has struck near La Ligua in Chile

Posted by admin on September 24, 2015 0 Comments

Earthquake location -32.3378S, -71.9276WA light earthquake with magnitude 4.2 (ml/mb) was reported 66 kilometers (41 miles) from La Ligua in Chile on Friday. Exact location of earthquake, longitude -71.9276 West, latitude -32.3378 South, depth = 16.57 km. The temblor was picked up at 13:50:39 / 1:50 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). All ids that are associated to the event: us20003lgm. Unique identifier: us20003lgm. Exact time and date of earthquake 18/09/15 / 2015-09-18 18:50:39 / September 18, 2015 @ 6:50 pm UTC/GMT. The earthquake occurred at a depth of 16.57 km (10 miles).

Close country/countries, Chile (c. 16 746 000 pop) (That might be effected). Event epicenter was 84 km (52 miles) from Viña del Mar (c. 294 600 pop), 83 km (52 miles) from Valparaíso (c. 282 400 pop), 91 km (57 miles) from Quilpué (c. 130 300 pop), 88 km (55 miles) from Quillota (c. 67 800 pop), 83 km (52 miles) from Hacienda La Calera (c. 49 100 pop), 67 km (41 miles) from La Ligua (c. 24 900 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Quilpué, Quillota, Viña del Mar.

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

How would you describe the shaking?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. 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: 66 km W of La Ligua, Chile.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -71.9276° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -32.3378° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 16.57 km Depth of the event in kilometers.
Place 66km 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 2015-09-18 18:50:39 Time when the event occurred. UTC/GMT
Updated 2015-09-24 15:22:25 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 271 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 0.725 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.86 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 163 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 us20003lgm Id of event.
Event Code 20003lgm An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20003lgm, A comma-separated list of event ids that are associated to an event.

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