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Light earthquake: M4.5 quake has struck near Santa Cruz in Chile

Earthquake location -34.7992S, -71.6758WA light earthquake with magnitude 4.5 (ml/mb) was reported 33 kilometers (21 miles) from Santa Cruz in Chile on Sunday. The earthquake occurred at a depth of 45.29 km (28 miles). Date and time of earthquake in UTC/GMT: 19/10/15 / 2015-10-19 02:41:00 / October 19, 2015 @ 2:41 am. Exact location, longitude -71.6758° West, latitude -34.7992° South, depth = 45.29 km. The temblor was reported at 23:41:00 / 11:41 pm (local time epicenter). Id of earthquake: us10003pkk. Event ids that are associated: us10003pkk. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Earthquake epicenter was 70 km (43 miles) from Talca (c. 197 500 pop), 45 km (28 miles) from Curicó (c. 102 400 pop), 87 km (54 miles) from Rengo (c. 38 100 pop), 89 km (56 miles) from Constitución (c. 37 900 pop), 33 km (21 miles) from Santa Cruz (c. 33 300 pop), 50 km (31 miles) from Molina (c. 28 800 pop), 68 km (42 miles) from San Vicente (c. 22 600 pop). Country/countries that might be effected, Chile (c. 16 746 000 pop). Nearest cities/city/villages to epicentrum/hypocenter was Constitución, San Javier, Rengo (min 5000 pop).

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 twenty 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 earthquakes in the world each year.

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. 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: 33 km WSW of Santa Cruz, Chile.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -71.6758° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -34.7992° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 45.29 km Depth of the event in kilometers.
Place 33km WSW of Santa Cruz, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-10-19 02:41:00 Time when the event occurred. UTC/GMT
Updated 2015-10-19 02:53:43 Time when the event was most recently updated. UTC/GMT
Timezone offset -180 Timezone offset from UTC in minutes at the event epicenter.
Felt 2 The total number of felt reports
CDI 2.5 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 0.296 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.38 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 133 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 us10003pkk Id of event.
Event Code 10003pkk An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10003pkk, A comma-separated list of event ids that are associated to an event.

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