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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag was detected near Curico in Chile

Earthquake location -35.1522S, -70.8759WA light earthquake magnitude 4.5 (ml/mb) strikes 37 kilometers (23 miles) from Curico in Chile on Tuesday. Exact location of event, longitude -70.8759 West, latitude -35.1522 South, depth = 99.48 km. Event ids that are associated to the earthquake: us2000a5k0. Id of event: us2000a5k0. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was detected at 09:13:30 / 9:13 am (local time epicenter). The earthquake occurred at a depth of 99.48 km (62 miles). Date and time of earthquake in UTC/GMT: 01/08/17 / 2017-08-01 13:13:30 / August 1, 2017 @ 1:13 pm.

Epicenter of the earthquake was 77 km (48 miles) from Talca (c. 197 500 pop), 38 km (24 miles) from Curicó (c. 102 400 pop), 83 km (52 miles) from Rengo (c. 38 100 pop), 72 km (45 miles) from Santa Cruz (c. 33 300 pop), 37 km (23 miles) from Molina (c. 28 800 pop), 82 km (51 miles) from San Vicente (c. 22 600 pop), 92 km (57 miles) from San Javier (c. 22 400 pop). Closest city/cities/towns to epicentrum/hypocenter was San Javier, Rengo, San Vicente (min 5000 pop). Country/countries that might be effected, Chile (c. 16 746 000 pop).

In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days four and in the last 365 days sixteen earthquakes of magnitude 3.0 or greater that have been detected in the same area. 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.

How would you describe the shaking?

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. 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: 37 km ESE of Curico, Chile.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -70.8759° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -35.1522° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 99.48 km Depth of the event in kilometers.
Place 37km ESE of Curico, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-08-01 13:13:30 Time when the event occurred. UTC/GMT
Updated 2017-08-20 13:52:22 Time when the event was most recently updated. UTC/GMT
Timezone offset -240 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 0.367 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.64 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 101 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 us2000a5k0 Id of event.
Event Code 2000a5k0 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000a5k0, A comma-separated list of event ids that are associated to an event.

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