Light earthquake: M4 quake has struck near Sibolga in Indonesia

A light earthquake magnitude 4 (ml/mb) strikes 161 km SSW of Sibolga, Indonesia (100 miles) on Friday. Date and time of earthquake in UTC/GMT: 21/06/18 / 2018-06-21 19:54:51 / June 21, 2018 @ 7:54 pm. The epicenter was at a depth of 35 km (22 miles). All ids that are associated to the event: us1000ey2e. Unique identifier: us1000ey2e. Exact location, longitude 97.9914° East, latitude 0.5118° North, depth = 35 km. The temblor was detected at 02:54:51 / 2:54 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

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

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. 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: 161 km SSW of Sibolga, Indonesia.

Indonesia Sibolga

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Parameter	Value	Description
Magnitude	4 mb	The magnitude for the event.
Longitude	97.9914° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	0.5118° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	35 km	Depth of the event in kilometers.
Place	161km SSW of Sibolga, Indonesia	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2018-06-21 19:54:51	Time when the event occurred. UTC/GMT
Updated	2018-06-21 21:32:40	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		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	0.89	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	225	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	us1000ey2e	Id of event.
Event Code	1000ey2e	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us1000ey2e,	A comma-separated list of event ids that are associated to an event.

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Light earthquake: M4 quake has struck near Sibolga in Indonesia

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