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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4 mag was detected near Illapel in Chile


Earthquake location -31.3226S, -72.2657WA light earthquake with magnitude 4 (ml/mb) was reported 110 km WNW of Illapel, Chile (68 miles) on Sunday. Exact location of event, longitude -72.2657 West, latitude -31.3226 South, depth = 8.09 km. The 4-magnitude earthquake has occurred at 18:01:15 / 6:01 pm (local time epicenter). Unique identifier: us10003pjz. Ids that are associated to the event: us10003pjz. The earthquake occurred at a depth of 8.09 km (5 miles). Exact time and date of earthquake 18/10/15 / 2015-10-18 23:01:15 / October 18, 2015 @ 11:01 pm UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

There are an estimated 13,000 light quakes in the world each year. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been eighteen, in the last 10 days fourty-nine, in the past 30 days two hundred and fourty-nine and in the last 365 days four hundred and seven earthquakes of magnitude 3.0 or greater that has struck near.

Did you feel anything?

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. 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: 110 km WNW of Illapel, Chile.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -72.2657° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -31.3226° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 8.09 km Depth of the event in kilometers.
Place 110km WNW 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 2015-10-18 23:01:15 Time when the event occurred. UTC/GMT
Updated 2015-11-06 03:46:32 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 0.843 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.97 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 129 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 us10003pjz Id of event.
Event Code 10003pjz An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10003pjz, A comma-separated list of event ids that are associated to an event.

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