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Moderate earthquake, 5.5 mag strikes near Muara Siberut in Indonesia


Earthquake location -2.4375S, 99.3426WA moderate earthquake with magnitude 5.5 (ml/mb) was reported 93 km S of Muara Siberut, Indonesia (58 miles) on Sunday. All ids that are associated to the event: us1000g3sp. Unique identifier: us1000g3sp. Exact location of earthquake, longitude 99.3426 East, latitude -2.4375 South, depth = 10 km. The earthquake was roughly at a depth of 10 km (6 miles). Exact time and date of event in UTC/GMT: 05/08/18 / 2018-08-05 08:56:22 / August 5, 2018 @ 8:56 am. The 5.5-magnitude earthquake was detected at 15:56:22 / 3:56 pm (local time epicenter). A tsunami warning has been issued near Muara Siberut in Indonesia (Does not indicate if a tsunami actually did or will exist).

Each year there are an estimated 1320 moderate earthquakes in the world. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days three and in the last 365 days eighteen earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures.

Questions or comments?

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. 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: 93 km S of Muara Siberut, Indonesia.

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More information

Parameter Value Description
Magnitude 5.5 mb The magnitude for the event.
Longitude 99.3426° East Decimal degrees longitude. Negative values for western longitudes.
Latitude -2.4375° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 93km S of Muara Siberut, Indonesia Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-08-05 08:56:22 Time when the event occurred. UTC/GMT
Updated 2018-08-05 09:21:08 Time when the event was most recently updated. UTC/GMT
Timezone offset 420 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 4 The maximum estimated instrumental intensity for the event.
Alert Level green 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 1 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 465 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 3.227 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.04 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 55 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 us1000g3sp Id of event.
Event Code 1000g3sp An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000g3sp, A comma-separated list of event ids that are associated to an event.

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