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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4 mag strikes near Ovalle in Chile


Earthquake location -30.6856S, -71.6306WA light earthquake magnitude 4 (ml/mb) has occurred on Saturday, 42 kilometers (26 miles) from Ovalle in Chile. Date and time of earthquake in UTC/GMT: 05/12/15 / 2015-12-05 14:55:04 / December 5, 2015 @ 2:55 pm. The earthquake occurred at a depth of 52.31 km (33 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was picked up at 11:55:04 / 11:55 am (local time epicenter). Exact location of earthquake, longitude -71.6306 West, latitude -30.6856 South, depth = 52.31 km. All ids that are associated to the event: us100044ak. Unique identifier: us100044ak.

The epicenter was 86 km (53 miles) from Coquimbo (c. 161 300 pop), 42 km (26 miles) from Ovalle (c. 77 100 pop), 64 km (40 miles) from Monte Patria (c. 13 900 pop). Nearest cities/city/towns to hypocenter/epicentrum was Coquimbo, Monte Patria, Ovalle (min 5000 pop). Country/countries that might be effected, Chile (c. 16 746 000 pop).

There are an estimated 13,000 light earthquakes in the world each year. In the past 24 hours, there have been twenty-two, in the last 10 days thirty-seven, in the past 30 days seventy-two and in the last 365 days four hundred and nineteen 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.

Questions or comments?

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: 42 km WSW of Ovalle, Chile.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -71.6306° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -30.6856° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 52.31 km Depth of the event in kilometers.
Place 42km WSW of Ovalle, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-12-05 14:55:04 Time when the event occurred. UTC/GMT
Updated 2015-12-31 19:00:06 Time when the event was most recently updated. UTC/GMT
Timezone offset -180 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 246 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 0.012 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.72 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 159 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 us100044ak Id of event.
Event Code 100044ak An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us100044ak, A comma-separated list of event ids that are associated to an event.

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