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Light earthquake: M4.2 quake has struck near Luwuk in Indonesia


Earthquake location -1.7272S, 122.6459WA light earthquake with magnitude 4.2 (ml/mb) was reported 87 kilometers (54 miles) from Luwuk in Indonesia on Saturday. The epicenter of the earthquake was roughly 35 km (22 miles) below the earth’s surface. Date and time of earthquake in UTC/GMT: 13/04/19 / 2019-04-13 02:29:49 / April 13, 2019 @ 2:29 am. Unique identifier: us7000359z. Ids that are associated to the event: us7000359z. The temblor was picked up at 10:29:49 / 10:29 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, depth 35 km, 122.6459° East, -1.7272° South.

The epicenter was 88 km (54 miles) from Luwuk (c. 47 800 pop). Nearby country/countries that might be effected, Indonesia (c. 242 968 000 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Luwuk.

In the past 24 hours, there have been nine, in the last 10 days nine, in the past 30 days nine and in the last 365 days ten earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light quakes in the world.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city 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: 87 km S of Luwuk, Indonesia.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 122.6459° East Decimal degrees longitude. Negative values for western longitudes.
Latitude -1.7272° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 35 km Depth of the event in kilometers.
Place 87km S of Luwuk, Indonesia Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2019-04-13 02:29:49 Time when the event occurred. UTC/GMT
Updated 2019-04-13 04:24:11 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 271 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 0.692 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.28 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 91 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 us7000359z Id of event.
Event Code 7000359z An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000359z, A comma-separated list of event ids that are associated to an event.

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