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Light earthquake 4.3 mag, San Juan, Argentina


Earthquake location -32.1749S, -68.5508WA light earthquake with magnitude 4.3 (ml/mb) was detected on Tuesday, San Juan, Argentina kilometers (0 miles) from San Juan, Argentina. All ids that are associated to the event: us7000as2t. Unique identifier: us7000as2t. The 4.3-magnitude earthquake was detected at 00:22:00 / 12:22 am (local time epicenter). The earthquake occurred at a depth of 123.63 km (77 miles) below the earth’s surface. Exact location of event, longitude -68.5508 West, latitude -32.1749 South, depth = 123.63 km. Exact time and date of earthquake 21/07/20 / 2020-07-21 00:22:00 / July 21, 2020 @ 12:22 am UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

The epicenter was 84 km (52 miles) from Mendoza (c. 876 900 pop), 71 km (44 miles) from San Juan (c. 447 000 pop), 77 km (48 miles) from Chimbas (c. 73 800 pop), 71 km (44 miles) from Santa Lucía (c. 43 600 pop), 55 km (34 miles) from Pocito (c. 41 000 pop), 63 km (39 miles) from Caucete (c. 33 600 pop). Close country/countries that might be effected, Argentina (c. 41 343 000 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Mendoza, San Martín, Albardón.

In the past 24 hours, there have been one, in the last 10 days three, in the past 30 days eight and in the last 365 days thirty-one 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. There are an estimated 13,000 light quakes in the world each year.

Did you feel it?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: San Juan, Argentina. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude -68.5508° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -32.1749° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 123.63 km Depth of the event in kilometers.
Place San Juan, Argentina Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-07-21 00:22:00 Time when the event occurred. UTC/GMT
Updated 2020-07-21 00:50:37 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 284 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 0.637 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.53 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 64 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 us7000as2t Id of event.
Event Code 7000as2t An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000as2t, A comma-separated list of event ids that are associated to an event.

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