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

Earthquake location -32.3694S, -71.8098WA light earthquake magnitude 4 (ml/mb) strikes 55 kilometers (34 miles) from La Ligua in Chile on Tuesday. Exact location of event, longitude -71.8098 West, latitude -32.3694 South, depth = 35 km. The earthquake occurred at a depth of 35 km (22 miles). Id of earthquake: us6000bgcv. Event ids that are associated: us6000bgcv. Exact time and date of event in UTC/GMT: 18/08/20 / 2020-08-18 03:04:34 / August 18, 2020 @ 3:04 am. The 4-magnitude earthquake was detected at 03:04:34 / 3:04 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Event epicenter was 77 km (48 miles) from Viña del Mar (c. 294 600 pop), 76 km (47 miles) from Valparaíso (c. 282 400 pop), 83 km (51 miles) from Quilpué (c. 130 300 pop), 85 km (53 miles) from Villa Alemana (c. 97 300 pop), 78 km (48 miles) from Quillota (c. 67 800 pop), 72 km (45 miles) from Hacienda La Calera (c. 49 100 pop). Close country/countries that might be effected, Chile (c. 16 746 000 pop). Nearest cities/city/villages to epicentrum/hypocenter was Limache, Villa Alemana, Quilpué (min 5000 pop).

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days three and in the last 365 days thirty-three earthquakes of magnitude 3.0 or greater that has occurred nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light quakes in the world each year.

Did you feel anything?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home 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: 55 km W of La Ligua, Chile.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -71.8098° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -32.3694° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 35 km Depth of the event in kilometers.
Place 55 km 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 2020-08-18 03:04:34 Time when the event occurred. UTC/GMT
Updated 2020-08-19 02:51:50 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 246 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 0.667 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.84 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 183 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 us6000bgcv Id of event.
Event Code 6000bgcv An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000bgcv, A comma-separated list of event ids that are associated to an event.

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