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Light earthquake: M4.5 quake has struck near Cilacap in Indonesia

Posted by admin on October 19, 2025 0 Comments

A light earthquake with magnitude 4.5 (ml/mb) was detected on Sunday, 49 kilometers (30 miles) from Cilacap in Indonesia. Exact location, longitude 108.9308° East, latitude -8.165° South, depth = 83.386 km. The earthquake was roughly at a depth of 83.386 km (52 miles). The temblor was detected at 06:53:19 / 6:53 am (local time epicenter). Global date and time of event UTC/GMT: 19/10/25 / 2025-10-19 06:53:19 / October 19, 2025 @ 6:53 am. Event id: us6000ri48. Ids that are associated to the earthquake: us6000ri48. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Epicenter of the event was 89 km (55 miles) from Purwokerto (c. 217 200 pop), 88 km (55 miles) from Sokaraja (c. 66 500 pop), 83 km (51 miles) from Banyumas (c. 48 400 pop), 73 km (46 miles) from Wangon (c. 35 500 pop), 89 km (55 miles) from Gombong (c. 32 000 pop), 77 km (48 miles) from Sidareja (c. 30 300 pop), 69 km (43 miles) from Kroya (c. 23 300 pop). Nearby country/countries that might be effected, Indonesia (c. 242 968 000 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Gombong, Purwokerto, Sokaraja.

Each 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. 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 seven earthquakes of magnitude 3.0 or greater that has occurred nearby.

Did you feel anything?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 49 km S of Cilacap, Indonesia.

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Parameter	Value	Description
Magnitude	4.5 mb	The magnitude for the event.
Longitude	108.9308° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	-8.165° South	Decimal degrees latitude. Negative values for southern latitudes.
Depth	83.386 km	Depth of the event in kilometers.
Place	49 km S of Cilacap, Indonesia	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-10-19 06:53:19	Time when the event occurred. UTC/GMT
Updated	2025-10-19 08:24:37	Time when the event was most recently updated. UTC/GMT
Timezone offset		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	312	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	27	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	1.448	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.29 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	47	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	us6000ri48	Id of event.
Event Code	6000ri48	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000ri48,	A comma-separated list of event ids that are associated to an event.

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Light earthquake: M4.5 quake has struck near Cilacap in Indonesia

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