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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4 mag strikes near Illapel in Chile


Earthquake location -31.723S, -72.045WA light earthquake magnitude 4 (ml/mb) has occurred on Friday, 84 kilometers (52 miles) from Illapel in Chile. Id of earthquake: us10003jiq. Event ids that are associated: us10003jiq. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 18/09/15 / 2015-09-18 21:47:26 / September 18, 2015 @ 9:47 pm. The 4-magnitude earthquake was detected at 16:47:26 / 4:47 pm (local time epicenter). The earthquake occurred at a depth of 50.3 km (31 miles). Exact location of event, depth 50.3 km, -72.045° West, -31.723° South.

Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Illapel. The epicenter was 83 km (52 miles) from Illapel (c. 22 800 pop). Close country/countries that might be effected, Chile (c. 16 746 000 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 hundred and ninety, in the last 10 days two hundred and seventy-seven, in the past 30 days two hundred and seventy-seven and in the last 365 days two hundred and ninety-two earthquakes of magnitude 3.0 or greater that have been detected in the same area.

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 84 km W of Illapel, Chile. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -72.045° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -31.723° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 50.3 km Depth of the event in kilometers.
Place 84km W of Illapel, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-09-18 21:47:26 Time when the event occurred. UTC/GMT
Updated 2015-10-18 02:01:14 Time when the event was most recently updated. UTC/GMT
Timezone offset -300 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 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.18 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mwr The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us10003jiq Id of event.
Event Code 10003jiq An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10003jiq, A comma-separated list of event ids that are associated to an event.

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