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Minor earthquake, 3.18 mag strikes near San Antonio in Puerto Rico


Earthquake location 18.9115S, -67.327333333333WA minor earthquake magnitude 3.18 (ml/mb) strikes 52 kilometers (32 miles) from San Antonio in Puerto Rico on Sunday. Exact location, longitude -67.327333333333° West, latitude 18.9115° North, depth = 20.01 km. The 3.18-magnitude earthquake was detected at 03:52:01 / 3:52 am (local time epicenter). Unique identifier: pr71492358. Ids that are associated to the event: pr71492358. The earthquake was roughly at a depth of 20.01 km (12 miles). Exact time and date of event in UTC/GMT: 10/08/25 / 2025-08-10 03:52:01 / August 10, 2025 @ 3:52 am.

Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was San Sebastián, Añasco, Hatillo. Close country/countries, Puerto Rico (c. 3 917 000 pop) (That might be effected). Earthquake epicenter was 57 km (35 miles) from Aguadilla (c. 16 100 pop), 56 km (35 miles) from Isabela (c. 12 500 pop), 73 km (45 miles) from San Sebastián (c. 11 600 pop), 73 km (45 miles) from Añasco (c. 6 100 pop), 71 km (44 miles) from Hatillo (c. 5 600 pop).

Earthquakes 2.5 to 3.2 are often felt, but only causes minor damage. Each year there are an estimated 130,000 minor earthquakes in the world. In the past 24 hours, there have been five, in the last 10 days fourteen, in the past 30 days thirty-two and in the last 365 days five hundred and twenty-six earthquakes of magnitude 3.0 or greater that have been detected nearby.

Did you feel the quake?

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 52 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 -67.327333333333° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.9115° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 20.01 km Depth of the event in kilometers.
Place 52 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 2025-08-10 03:52:01 Time when the event occurred. UTC/GMT
Updated 2025-08-10 04:20:19 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 15 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.4869 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.23 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 230 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 pr71492358 Id of event.
Event Code 71492358 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr71492358, A comma-separated list of event ids that are associated to an event.

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