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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.6 quake has struck near Coquimbo in Chile


Earthquake location -30.2309S, -71.5087WA light earthquake magnitude 4.6 (ml/mb) has struck on Friday, 34 kilometers (21 miles) from Coquimbo in Chile. The earthquake occurred at a depth of 42.05 km (26 miles). Exact location of earthquake, longitude -71.5087 West, latitude -30.2309 South, depth = 42.05 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global time and date of event 28/09/18 / 2018-09-28 13:49:53 / September 28, 2018 @ 1:49 pm UTC/GMT. The temblor was reported at 09:49:53 / 9:49 am (local time epicenter). Id of earthquake: us1000h3si. Event ids that are associated: us1000h3si.

Close country/countries that might be effected, Chile (c. 16 746 000 pop). Epicenter of the earthquake was 35 km (22 miles) from Coquimbo (c. 161 300 pop), 44 km (27 miles) from La Serena (c. 154 500 pop), 51 km (32 miles) from Ovalle (c. 77 100 pop), 74 km (46 miles) from Monte Patria (c. 13 900 pop), 80 km (49 miles) from Vicuña (c. 13 500 pop). Nearest cities/city/villages to epicentrum/hypocenter was Vicuña, Monte Patria, Ovalle (min 5000 pop).

In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days five and in the last 365 days sixty earthquakes of magnitude 3.0 or greater that have been detected in the same area. Every year there are an estimated 13,000 light earthquakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel it?

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: 34 km SSW of Coquimbo, Chile.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude -71.5087° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -30.2309° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 42.05 km Depth of the event in kilometers.
Place 34km SSW of Coquimbo, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-09-28 13:49:53 Time when the event occurred. UTC/GMT
Updated 2018-10-07 12:05:56 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 326 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 0.389 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.81 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 131 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 us1000h3si Id of event.
Event Code 1000h3si An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000h3si, A comma-separated list of event ids that are associated to an event.

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