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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.3 quake has struck near Salamanca in Chile


Earthquake location -31.6568S, -70.2987WA light earthquake with magnitude 4.3 (ml/mb) was detected on Tuesday, 65 kilometers (40 miles) from Salamanca in Chile. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Unique identifier: us2000c39a. Ids that are associated to the event: us2000c39a. The 4.3-magnitude earthquake has occurred at 04:42:22 / 4:42 am (local time epicenter). Global time and date of event 12/12/17 / 2017-12-12 07:42:22 / December 12, 2017 @ 7:42 am UTC/GMT. The earthquake occurred at a depth of 125.93 km (78 miles). Exact location of event, longitude -70.2987 West, latitude -31.6568 South, depth = 125.93 km.

Nearby country/countries that might be effected, Argentina (c. 41 343 000 pop), Chile (c. 16 746 000 pop). Epicenter of the earthquake was 82 km (51 miles) from Illapel (c. 22 800 pop), 64 km (40 miles) from Salamanca (c. 13 300 pop), 92 km (57 miles) from Calingasta (c. 8 200 pop). Nearest cities/city/villages to epicentrum/hypocenter was Calingasta, Illapel, Salamanca (min 5000 pop).

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. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days two and in the last 365 days fourteen earthquakes of magnitude 3.0 or greater that was reported nearby.

Did you feel it?

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. 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: 65 km ENE of Salamanca, Chile.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude -70.2987° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -31.6568° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 125.93 km Depth of the event in kilometers.
Place 65km ENE of Salamanca, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-12-12 07:42:22 Time when the event occurred. UTC/GMT
Updated 2017-12-22 13:24:17 Time when the event was most recently updated. UTC/GMT
Timezone offset -180 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 0.75 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.78 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 87 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 us2000c39a Id of event.
Event Code 2000c39a An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000c39a, A comma-separated list of event ids that are associated to an event.

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