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Light earthquake, 4.2 mag has occurred near Valparaiso in Chile

Posted by admin on April 28, 2017 0 Comments

Earthquake location -33.217S, -71.9998WA light earthquake with magnitude 4.2 (ml/mb) was detected on Friday, 39 kilometers (24 miles) from Valparaiso in Chile. Exact location of event, depth 21.02 km, -71.9998° West, -33.217° South. Date and time of earthquake in UTC/GMT: 28/04/17 / 2017-04-28 17:21:48 / April 28, 2017 @ 5:21 pm. The epicenter of the earthquake was roughly 21.02 km (13 miles) below the earth’s surface. The 4.2-magnitude earthquake was detected at 12:21:48 / 12:21 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Unique identifier: us10008ln3. Ids that are associated to the event: us10008ln3.

Nearest cities/city/villages to epicentrum/hypocenter was Melipilla, Hacienda La Calera, Quillota (min 5000 pop). Epicenter of the earthquake was 47 km (29 miles) from Viña del Mar (c. 294 600 pop), 40 km (25 miles) from Valparaíso (c. 282 400 pop), 55 km (34 miles) from Quilpué (c. 130 300 pop), 61 km (38 miles) from Villa Alemana (c. 97 300 pop), 56 km (35 miles) from San Antonio (c. 85 700 pop), 79 km (49 miles) from Quillota (c. 67 800 pop). Country/countries that might be effected, Chile (c. 16 746 000 pop).

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. In the past 24 hours, there have been fifteen, in the last 10 days seventy-seven, in the past 30 days seventy-seven and in the last 365 days one hundred and three earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Questions or comments?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 39 km WSW of Valparaiso, Chile.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -71.9998° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -33.217° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 21.02 km Depth of the event in kilometers.
Place 39km WSW 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 2017-04-28 17:21:48 Time when the event occurred. UTC/GMT
Updated 2017-04-28 18:17:42 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 0.36 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.92 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 us10008ln3 Id of event.
Event Code 10008ln3 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10008ln3, A comma-separated list of event ids that are associated to an event.

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