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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.6 quake has struck near Valparaiso in Chile


Earthquake location -32.421S, -72.174WA light earthquake magnitude 4.6 (ml/mb) has struck on Thursday, 85 kilometers (53 miles) from Valparaiso in Chile. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event id: us10003kum. Ids that are associated to the earthquake: us10003kum. Exact location of event, longitude -72.174 West, latitude -32.421 South, depth = 20.25 km. Global time and date of event 18/09/15 / 2015-09-18 03:04:36 / September 18, 2015 @ 3:04 am UTC/GMT. The epicenter was at a depth of 20.25 km (13 miles). The 4.6-magnitude earthquake was detected at 22:04:36 / 10:04 pm (local time epicenter).

Epicenter of the event was 89 km (55 miles) from Viña del Mar (c. 294 600 pop), 86 km (53 miles) from Valparaíso (c. 282 400 pop), 98 km (61 miles) from Quilpué (c. 130 300 pop), 98 km (61 miles) from Hacienda La Calera (c. 49 100 pop), 89 km (55 miles) from La Ligua (c. 24 900 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Hacienda La Calera, Quilpué, Viña del Mar. Close country/countries that might be effected, Chile (c. 16 746 000 pop).

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

Questions or comments?

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: 85 km NW of Valparaiso, Chile.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude -72.174° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -32.421° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 20.25 km Depth of the event in kilometers.
Place 85km NW of Valparaiso, 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 03:04:36 Time when the event occurred. UTC/GMT
Updated 2015-10-08 02:24:30 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 326 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 0.751 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.23 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 145 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 us10003kum Id of event.
Event Code 10003kum An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10003kum, A comma-separated list of event ids that are associated to an event.

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