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Light earthquake: M4.5 quake has struck near San Felipe in Chile

Earthquake location -32.5256S, -70.5166WA light earthquake with magnitude 4.5 (ml/mb) was detected on Tuesday, 31 kilometers (19 miles) from San Felipe in Chile. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was picked up at 12:45:37 / 12:45 pm (local time epicenter). Id of earthquake: us6000d1w0. Event ids that are associated: us6000d1w0. The earthquake occurred at a depth of 98.44 km (61 miles). Exact location of event, longitude -70.5166 West, latitude -32.5256 South, depth = 98.44 km. Date and time of earthquake in UTC/GMT: 22/12/20 / 2020-12-22 12:45:37 / December 22, 2020 @ 12:45 pm.

Earthquake epicenter was 79 km (49 miles) from Quillota (c. 67 800 pop), 32 km (20 miles) from San Felipe (c. 59 300 pop), 35 km (22 miles) from Los Andes (c. 56 900 pop), 72 km (44 miles) from Hacienda La Calera (c. 49 100 pop), 89 km (55 miles) from Limache (c. 35 900 pop), 91 km (57 miles) from Lampa (c. 29 300 pop), 67 km (42 miles) from La Ligua (c. 24 900 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Salamanca, Lampa, Limache. Country/countries that might be effected, Chile (c. 16 746 000 pop).

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

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. 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: 31 km NE of San Felipe, Chile.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -70.5166° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -32.5256° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 98.44 km Depth of the event in kilometers.
Place 31 km NE of San Felipe, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-12-22 12:45:37 Time when the event occurred. UTC/GMT
Updated 2020-12-22 13:09:13 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 312 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 0.239 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.59 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 100 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 us6000d1w0 Id of event.
Event Code 6000d1w0 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000d1w0, A comma-separated list of event ids that are associated to an event.

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