Light earthquake: M4.9 quake has struck near Sibolga in Indonesia

A light earthquake magnitude 4.9 (ml/mb) strikes 31 kilometers (19 miles) from Sibolga in Indonesia on Friday. All ids that are associated to the event: us1000he5l. Unique identifier: us1000he5l. Global time and date of event 18/10/18 / 2018-10-18 22:12:17 / October 18, 2018 @ 10:12 pm UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter of the earthquake was roughly 121.44 km (75 miles) below the earth’s surface. The 4.9-magnitude earthquake has occurred at 05:12:17 / 5:12 am (local time epicenter). Exact location, longitude 99.0244° East, latitude 1.881° North, depth = 121.44 km.

Epicenter of the event was 93 km (58 miles) from Rantauprapat (c. 103 000 pop), 62 km (39 miles) from Padangsidempuan (c. 100 600 pop), 31 km (19 miles) from Sibolga (c. 79 700 pop), 83 km (51 miles) from Bandar (c. 31 400 pop). Nearest cities/city/towns to hypocenter/epicentrum was Rantauprapat, Bandar, Padangsidempuan (min 5000 pop). Close country/countries, Indonesia (c. 242 968 000 pop) (That might be effected).

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days three and in the last 365 days twenty-one 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. Each year there are an estimated 13,000 light quakes in the world.

Questions or comments?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 31 km ENE of Sibolga, Indonesia.

More information

Parameter	Value	Description
Magnitude	4.9 mb	The magnitude for the event.
Longitude	99.0244° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	1.881° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	121.44 km	Depth of the event in kilometers.
Place	31km ENE 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	2018-10-18 22:12:17	Time when the event occurred. UTC/GMT
Updated	2018-10-18 22:31:42	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	369	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	0.813	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	93	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	us1000he5l	Id of event.
Event Code	1000he5l	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us1000he5l,	A comma-separated list of event ids that are associated to an event.

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Light earthquake: M4.9 quake has struck near Sibolga in Indonesia

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