Minor earthquake, 3.15 mag was detected near San Antonio in Puerto Rico

A minor earthquake with magnitude 3.15 (ml/mb) was detected on Wednesday, 88 km NW of San Antonio, Puerto Rico (55 miles). The earthquake occurred at a depth of 19.82 km (12 miles). Exact time and date of event in UTC/GMT: 21/05/25 / 2025-05-21 23:58:17 / May 21, 2025 @ 11:58 pm. Exact location of event, longitude -67.678166666667 West, latitude 19.069833333333 North, depth = 19.82 km. All ids that are associated to the event: pr71483158. Unique identifier: pr71483158. The temblor was detected at 23:58:17 / 11:58 pm (local time epicenter).

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

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What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 88 km NW of San Antonio, Puerto Rico.

Puerto Rico San Antonio

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Parameter	Value	Description
Magnitude	3.15 mb	The magnitude for the event.
Longitude	-67.678166666667° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	19.069833333333° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	19.82 km	Depth of the event in kilometers.
Place	88 km NW 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	2025-05-21 23:58:17	Time when the event occurred. UTC/GMT
Updated	2025-05-22 00:26:34	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	11	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.8047	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.32 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	247	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	pr71483158	Id of event.
Event Code	71483158	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,pr71483158,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.15 mag was detected near San Antonio in Puerto Rico

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