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

Posted by admin on July 16, 2017 0 Comments

Earthquake location -33.9472S, -71.3382WA light earthquake magnitude 4.2 (ml/mb) strikes 29 kilometers (18 miles) from Melipilla in Chile on Sunday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, longitude -71.3382 West, latitude -33.9472 South, depth = 50.89 km. Date and time of earthquake in UTC/GMT: 16/07/17 / 2017-07-16 08:19:31 / July 16, 2017 @ 8:19 am. The 4.2-magnitude earthquake has occurred at 04:19:31 / 4:19 am (local time epicenter). Event ids that are associated to the earthquake: us20009wr2. Id of event: us20009wr2. The epicenter of the earthquake was roughly 50.89 km (32 miles) below the earth’s surface.

Closest city/cities/towns to epicentrum/hypocenter was Chimbarongo, Villa Presidente Frei, Ñuñoa, Santiago, Chile, Lampa (min 5000 pop). Close country/countries, Chile (c. 16 746 000 pop) (That might be effected). The epicenter was 84 km (52 miles) from Santiago (c. 4 837 300 pop), 80 km (50 miles) from Puente Alto (c. 510 400 pop), 71 km (44 miles) from San Bernardo (c. 249 900 pop), 60 km (37 miles) from Rancagua (c. 212 700 pop), 77 km (48 miles) from La Pintana (c. 201 200 pop), 80 km (49 miles) from Lo Prado (c. 104 300 pop).

In the past 24 hours, there have been one, in the last 10 days three, in the past 30 days six and in the last 365 days seventy-four earthquakes of magnitude 3.0 or greater that have been detected 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?

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 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: 29 km SSW of Melipilla, Chile.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -71.3382° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -33.9472° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 50.89 km Depth of the event in kilometers.
Place 29km SSW of Melipilla, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-07-16 08:19:31 Time when the event occurred. UTC/GMT
Updated 2017-07-16 08:41:13 Time when the event was most recently updated. UTC/GMT
Timezone offset -240 Timezone offset from UTC in minutes at the event epicenter.
Felt 1 The total number of felt reports
CDI 2 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 272 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 0.11 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.42 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 114 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 us20009wr2 Id of event.
Event Code 20009wr2 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20009wr2, A comma-separated list of event ids that are associated to an event.

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