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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.2 mag strikes near Valparaiso in Chile



Earthquake location -32.9867S, -71.9445WA light earthquake with magnitude 4.2 (ml/mb) was reported 30 kilometers (19 miles) from Valparaiso in Chile on Saturday. Exact location of earthquake, -71.9445° West, -32.9867° South, depth 24.44 km. The 4.2-magnitude earthquake was detected at 23:10:04 / 11:10 pm (local time epicenter). The earthquake was roughly at a depth of 24.44 km (15 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of earthquake 23/04/17 / 2017-04-23 03:10:04 / April 23, 2017 @ 3:10 am UTC/GMT. Event id: us10008jwi. Ids that are associated to the earthquake: us10008jwi.

Epicenter of the event was 37 km (23 miles) from Viña del Mar (c. 294 600 pop), 30 km (19 miles) from Valparaíso (c. 282 400 pop), 47 km (29 miles) from Quilpué (c. 130 300 pop), 54 km (33 miles) from Villa Alemana (c. 97 300 pop), 75 km (46 miles) from San Antonio (c. 85 700 pop), 66 km (41 miles) from Quillota (c. 67 800 pop). Country/countries that might be effected, Chile (c. 16 746 000 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was La Ligua, San Antonio, Hacienda La Calera.

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

How would you describe the shaking?

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. 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: 30 km W of Valparaiso, Chile.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -71.9445° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -32.9867° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 24.44 km Depth of the event in kilometers.
Place 30km 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 2017-04-23 03:10:04 Time when the event occurred. UTC/GMT
Updated 2017-04-26 05:30:32 Time when the event was most recently updated. UTC/GMT
Timezone offset -240 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 0.26 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.66 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 ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us10008jwi Id of event.
Event Code 10008jwi An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10008jwi, A comma-separated list of event ids that are associated to an event.

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