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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.1 quake has struck near Coquimbo in Chile

Earthquake location -30.222S, -72.4166WA light earthquake magnitude 4.1 (ml/mb) has occurred on Friday, 107 km WSW of Coquimbo, Chile (66 miles). Event id: us20003llf. Ids that are associated to the earthquake: us20003llf. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake occurred at a depth of 25.77 km (16 miles) below the earth’s surface. The 4.1-magnitude earthquake has occurred at 16:53:29 / 4:53 pm (local time epicenter). Global time and date of event 18/09/15 / 2015-09-18 21:53:29 / September 18, 2015 @ 9:53 pm UTC/GMT. Exact location of event, longitude -72.4166 West, latitude -30.222 South, depth = 25.77 km.

There are an estimated 13,000 light earthquakes 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 ninety-five, in the last 10 days one hundred and twenty-five, in the past 30 days one hundred and twenty-five and in the last 365 days one hundred and fourty earthquakes of magnitude 3.0 or greater that have been detected in the same area.

How would you describe the shaking?

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 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: 107 km WSW of Coquimbo, Chile.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -72.4166° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -30.222° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 25.77 km Depth of the event in kilometers.
Place 107km WSW 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 2015-09-18 21:53:29 Time when the event occurred. UTC/GMT
Updated 2015-10-06 04:27:40 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 259 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 0.811 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.01 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 147 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 us20003llf Id of event.
Event Code 20003llf An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20003llf, A comma-separated list of event ids that are associated to an event.

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