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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4 mag, 21 km N of Ngeru, Indonesia


Earthquake location -8.3231S, 117.5366WA light earthquake magnitude 4 (ml/mb) strikes 21 kilometers (13 miles) from Ngeru in Indonesia on Tuesday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global time and date of event 21/03/17 / 2017-03-21 14:33:52 / March 21, 2017 @ 2:33 pm UTC/GMT. Exact location of earthquake, 117.5366° East, -8.3231° South, depth 31.35 km. The temblor was detected at 22:33:52 / 10:33 pm (local time epicenter). The earthquake occurred at a depth of 31.35 km (19 miles). Event ids that are associated to the earthquake: us20008vc1. Id of event: us20008vc1.

Country/countries that might be effected, Indonesia (c. 242 968 000 pop). Earthquake epicenter was 23 km (14 miles) from Sumbawa Besar (c. 52 700 pop). Closest city/cities/towns to epicentrum/hypocenter was Sumbawa Besar (min 5000 pop).

Every year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days two and in the last 365 days twelve earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel anything?

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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 21 km N of Ngeru, Indonesia.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude 117.5366° East Decimal degrees longitude. Negative values for western longitudes.
Latitude -8.3231° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 31.35 km Depth of the event in kilometers.
Place 21km N of Ngeru, Indonesia Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-03-21 14:33:52 Time when the event occurred. UTC/GMT
Updated 2017-04-05 13:33:07 Time when the event was most recently updated. UTC/GMT
Timezone offset 480 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 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 3.351 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.59 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 87 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 us20008vc1 Id of event.
Event Code 20008vc1 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20008vc1, A comma-separated list of event ids that are associated to an event.

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