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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.5 quake has struck near La Ligua in Chile



Earthquake location -32.061S, -71.9488WA light earthquake with magnitude 4.5 (ml/mb) was detected on Monday, 80 kilometers (50 miles) from La Ligua in Chile. Exact location of earthquake, longitude -71.9488 West, latitude -32.061 South, depth = 16.18 km. The temblor was detected at 06:53:33 / 6:53 am (local time epicenter). Exact time and date of earthquake 17/04/17 / 2017-04-17 11:53:33 / April 17, 2017 @ 11:53 am UTC/GMT. Unique identifier: us10008ica. Ids that are associated to the event: us10008ica. The epicenter of the earthquake was roughly 16.18 km (10 miles) below the earth’s surface. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Illapel, La Ligua. Epicenter of the earthquake was 80 km (50 miles) from La Ligua (c. 24 900 pop), 88 km (54 miles) from Illapel (c. 22 800 pop). Close country/countries that might be effected, Chile (c. 16 746 000 pop).

In the past 24 hours, there have been twenty-nine, in the last 10 days thirty, in the past 30 days thirty-two and in the last 365 days eighty-six earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light quakes in the world each year.

How would you describe the shaking?

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: 80 km WNW of La Ligua, Chile.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -71.9488° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -32.061° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 16.18 km Depth of the event in kilometers.
Place 80km WNW of La Ligua, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-04-17 11:53:33 Time when the event occurred. UTC/GMT
Updated 2017-04-28 09:10:15 Time when the event was most recently updated. UTC/GMT
Timezone offset -300 Timezone offset from UTC in minutes at the event epicenter.
Felt The total number of felt reports
CDI 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 312 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 0.743 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.65 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 186 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 us10008ica Id of event.
Event Code 10008ica An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10008ica, A comma-separated list of event ids that are associated to an event.

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