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Light earthquake 4.2 mag, 48 km W of Valparaiso, Chile


Earthquake location -33.0285S, -72.1486WA light earthquake magnitude 4.2 (ml/mb) has struck on Saturday, 48 kilometers (30 miles) from Valparaiso in Chile. Unique identifier: us10008jum. Ids that are associated to the event: us10008jum. The earthquake was roughly at a depth of 19.48 km (12 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was reported at 18:57:11 / 6:57 pm (local time epicenter). Global date and time of event UTC/GMT: 22/04/17 / 2017-04-22 23:57:11 / April 22, 2017 @ 11:57 pm. Exact location of event, longitude -72.1486 West, latitude -33.0285 South, depth = 19.48 km.

Epicenter of the event was 56 km (35 miles) from Viña del Mar (c. 294 600 pop), 49 km (30 miles) from Valparaíso (c. 282 400 pop), 66 km (41 miles) from Quilpué (c. 130 300 pop), 72 km (45 miles) from Villa Alemana (c. 97 300 pop), 81 km (50 miles) from San Antonio (c. 85 700 pop), 85 km (53 miles) from Quillota (c. 67 800 pop). Close country/countries that might be effected, Chile (c. 16 746 000 pop). Closest city/cities/towns to epicentrum/hypocenter was Hacienda La Calera, Quillota, Limache (min 5000 pop).

In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days two and in the last 365 days thirty-four earthquakes of magnitude 3.0 or greater that have been detected in the same area. 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.

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 48 km W of Valparaiso, Chile. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -72.1486° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -33.0285° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 19.48 km Depth of the event in kilometers.
Place 48km W of Valparaiso, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-04-22 23:57:11 Time when the event occurred. UTC/GMT
Updated 2017-04-23 00:09:19 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 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 0.429 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.79 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 172 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mwr The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us10008jum Id of event.
Event Code 10008jum An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10008jum, A comma-separated list of event ids that are associated to an event.

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