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Minor earthquake: M3.15 quake has struck near Hatillo in Puerto Rico


Earthquake location 19.133S, -66.867333333333WA minor earthquake with magnitude 3.15 (ml/mb) was detected on Friday, 71 kilometers (44 miles) from Hatillo in Puerto Rico. All ids that are associated to the event: pr71499413. Unique identifier: pr71499413. Global date and time of event UTC/GMT: 31/10/25 / 2025-10-31 18:25:28 / October 31, 2025 @ 6:25 pm. The 3.15-magnitude earthquake was detected at 18:25:28 / 6:25 pm (local time epicenter). The earthquake occurred at a depth of 31.74 km (20 miles) below the earth’s surface. Exact location of event, longitude -66.867333333333 West, latitude 19.133 North, depth = 31.74 km.

The epicenter was 75 km (47 miles) from Arecibo (c. 49 300 pop), 72 km (45 miles) from Isabela (c. 12 500 pop), 72 km (45 miles) from Hatillo (c. 5 600 pop), 74 km (46 miles) from Quebradillas (c. 5 600 pop), 72 km (45 miles) from Camuy (c. 4 200 pop). Closest city/cities/towns to epicentrum/hypocenter was Arecibo, Quebradillas, Camuy (min 5000 pop). Close country/countries, Puerto Rico (c. 3 917 000 pop) (That might be effected).

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

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. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 71 km N of Hatillo, Puerto Rico.

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More information

Parameter Value Description
Magnitude 3.15 mb The magnitude for the event.
Longitude -66.867333333333° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 19.133° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 31.74 km Depth of the event in kilometers.
Place 71 km N of Hatillo, 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 2025-10-31 18:25:28 Time when the event occurred. UTC/GMT
Updated 2025-10-31 18:50:06 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 153 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 18 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.7011 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.52 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 289 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 pr71499413 Id of event.
Event Code 71499413 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr71499413, A comma-separated list of event ids that are associated to an event.

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