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Light earthquake, 4.5 mag strikes near Tabiauan in Philippines

Posted by admin on October 21, 2025 0 Comments

Earthquake location 4.006S, 122.8905WA light earthquake with magnitude 4.5 (ml/mb) was detected on Tuesday, 249 km SSE of Tabiauan, Philippines (155 miles). The temblor was reported at 11:27:59 / 11:27 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 21/10/25 / 2025-10-21 11:27:59 / October 21, 2025 @ 11:27 am. Exact location of event, depth 559.147 km, 122.8905° East, 4.006° North. The epicenter was at a depth of 559.147 km (347 miles). Unique identifier: us6000riff. Ids that are associated to the event: us6000riff.

Every year there are an estimated 13,000 light earthquakes in the world. 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 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.

How would you describe the shaking?

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. 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: 249 km SSE of Tabiauan, Philippines.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude 122.8905° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 4.006° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 559.147 km Depth of the event in kilometers.
Place 249 km SSE of Tabiauan, Philippines Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-10-21 11:27:59 Time when the event occurred. UTC/GMT
Updated 2025-10-21 11:51:31 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 64 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 2.68 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.54 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 37 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 us6000riff Id of event.
Event Code 6000riff An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000riff, A comma-separated list of event ids that are associated to an event.

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