Moderate earthquake, 5.5 mag strikes near Basco in Philippines

A moderate earthquake magnitude 5.5 (ml/mb) has occurred on Thursday, 96 kilometers (60 miles) from Basco in Philippines. The earthquake occurred at a depth of 40.051 km (25 miles). Date and time of earthquake in UTC/GMT: 18/12/25 / 2025-12-18 07:27:47 / December 18, 2025 @ 7:27 am. The temblor was detected at 07:27:47 / 7:27 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 earthquake, longitude 121.2425 East, latitude 19.9069 North, depth = 40.051 km. Event id: us6000rvmn. Ids that are associated to the earthquake: us6000rvmn.

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Basco. The epicenter was 97 km (60 miles) from Basco (c. 7 300 pop). Close country/countries that might be effected, Philippines (c. 99 900 000 pop).

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 two and in the last 365 days twenty-five earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures.

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Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 96 km SW of Basco, Philippines.

Basco Philippines

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Parameter	Value	Description
Magnitude	5.5 mb	The magnitude for the event.
Longitude	121.2425° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	19.9069° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	40.051 km	Depth of the event in kilometers.
Place	96 km SW of Basco, Philippines	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-12-18 07:27:47	Time when the event occurred. UTC/GMT
Updated	2025-12-18 07:37:45	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	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	32	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	2.9	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.78 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	106	The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type	mww	The method or algorithm used to calculate the preferred magnitude for the event.
Event Type	earthquake	Type of seismic event.
Event ID	us6000rvmn	Id of event.
Event Code	6000rvmn	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000rvmn,	A comma-separated list of event ids that are associated to an event.

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Moderate earthquake, 5.5 mag strikes near Basco in Philippines

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