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Light earthquake: M4 quake has struck near Constitución in Chile

Earthquake location -35.701S, -72.9257WA light earthquake magnitude 4 (ml/mb) strikes 61 kilometers (38 miles) from Constitución in Chile on Sunday. The earthquake occurred at a depth of 24.21 km (15 miles) below the earth’s surface. Id of earthquake: us6000djvs. Event ids that are associated: us6000djvs. Exact location of earthquake, -72.9257° West, -35.701° South, depth 24.21 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4-magnitude earthquake was detected at 11:56:47 / 11:56 am (local time epicenter). Global time and date of event 21/02/21 / 2021-02-21 11:56:47 / February 21, 2021 @ 11:56 am UTC/GMT.

Nearby country/countries that might be effected, Chile (c. 16 746 000 pop). Event epicenter was 62 km (38 miles) from Constitución (c. 37 900 pop), 62 km (38 miles) from Cauquenes (c. 31 400 pop). Nearest cities/city/villages to epicentrum/hypocenter was Constitución, Cauquenes (min 5000 pop).

Each year there are an estimated 13,000 light quakes in the world. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days one and in the last 365 days thirteen 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.

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. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 61 km SW of Constitución, Chile.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -72.9257° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -35.701° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 24.21 km Depth of the event in kilometers.
Place 61 km SW of Constitución, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2021-02-21 11:56:47 Time when the event occurred. UTC/GMT
Updated 2021-02-21 12:31:34 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 1.066 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.83 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 168 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 us6000djvs Id of event.
Event Code 6000djvs An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000djvs, A comma-separated list of event ids that are associated to an event.

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