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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.4 quake has struck near Illapel in Chile



Earthquake location -31.6156S, -72.0009WA light earthquake with magnitude 4.4 (ml/mb) was detected on Wednesday, 79 kilometers (49 miles) from Illapel in Chile. The temblor was picked up at 07:55:02 / 7:55 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event ids that are associated to the earthquake: us20003nb0. Id of event: us20003nb0. The earthquake occurred at a depth of 26.76 km (17 miles) below the earth’s surface. Exact location of earthquake, longitude -72.0009 West, latitude -31.6156 South, depth = 26.76 km. Exact time and date of earthquake 23/09/15 / 2015-09-23 12:55:02 / September 23, 2015 @ 12:55 pm UTC/GMT.

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Illapel. Epicenter of the event was 79 km (49 miles) from Illapel (c. 22 800 pop). 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. In the past 24 hours, there have been ninety-nine, in the last 10 days three hundred and nine, in the past 30 days three hundred and nine and in the last 365 days three hundred and twenty-three earthquakes of magnitude 3.0 or greater that have been detected in the same area. Each year there are an estimated 13,000 light earthquakes in the world.

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 79 km W of Illapel, Chile.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude -72.0009° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -31.6156° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 26.76 km Depth of the event in kilometers.
Place 79km 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 2015-09-23 12:55:02 Time when the event occurred. UTC/GMT
Updated 2015-10-17 06:43:21 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 298 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 0.989 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.76 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 us20003nb0 Id of event.
Event Code 20003nb0 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20003nb0, A comma-separated list of event ids that are associated to an event.

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