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Minor earthquake, 3.18 mag was detected near San Antonio in Puerto Rico

Posted by admin on December 4, 2025 0 Comments

Earthquake location 18.874666666667S, -67.276166666667WA minor earthquake magnitude 3.18 (ml/mb) strikes 46 kilometers (29 miles) from San Antonio in Puerto Rico on Thursday. The earthquake occurred at a depth of 46.2 km (29 miles). Global time and date of event 04/12/25 / 2025-12-04 03:57:06 / December 4, 2025 @ 3:57 am UTC/GMT. The 3.18-magnitude earthquake was detected at 03:57:06 / 3:57 am (local time epicenter). Exact location of event, depth 46.2 km, -67.276166666667° West, 18.874666666667° North. Event id: pr71501338. Ids that are associated to the earthquake: pr71501338.

Nearest cities/city/villages to epicentrum/hypocenter was Lares, Mayagüez, Las Marías (min 5000 pop). Country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Event epicenter was 76 km (47 miles) from Mayagüez (c. 78 600 pop), 74 km (46 miles) from Arecibo (c. 49 300 pop), 51 km (32 miles) from Aguadilla (c. 16 100 pop), 49 km (31 miles) from Isabela (c. 12 500 pop), 67 km (42 miles) from San Sebastián (c. 11 600 pop).

In the past 24 hours, there have been one, in the last 10 days thirteen, in the past 30 days twenty-four and in the last 365 days five hundred and five earthquakes of magnitude 3.0 or greater that has struck near. There are an estimated 130,000 minor earthquakes in the world each year. Earthquakes 2.5 to 3.2 are often felt, but only causes minor damage.

How would you describe the shaking?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 46 km NNW of San Antonio, Puerto Rico. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 3.18 mb The magnitude for the event.
Longitude -67.276166666667° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.874666666667° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 46.2 km Depth of the event in kilometers.
Place 46 km NNW of San Antonio, Puerto Rico Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-12-04 03:57:06 Time when the event occurred. UTC/GMT
Updated 2025-12-04 04:27:09 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 156 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network pr The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,pr, A comma-separated list of network contributors.
Number of Stations Used 19 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.4342 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.25 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 298 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type md The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID pr71501338 Id of event.
Event Code 71501338 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr71501338, A comma-separated list of event ids that are associated to an event.

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