Minor earthquake, 3.69 mag strikes near Guánica in Puerto Rico

A minor earthquake with magnitude 3.69 (ml/mb) was reported 15 kilometers (9 miles) from Guánica in Puerto Rico on Tuesday. Exact location of earthquake, -66.8556° West, 17.839° North, depth 11 km. Id of earthquake: pr2025280001. Event ids that are associated: us6000rf8d, pr2025280001. The 3.69-magnitude earthquake was detected at 02:01:20 / 2:01 am (local time epicenter). Global time and date of event 07/10/25 / 2025-10-07 02:01:20 / October 7, 2025 @ 2:01 am UTC/GMT. The epicenter of the earthquake was roughly 11 km (7 miles) below the earth’s surface.

Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Ceiba, Arroyo, Vega Alta. Epicenter of the event was 32 km (20 miles) from Ponce (c. 152 600 pop), 50 km (31 miles) from Mayagüez (c. 78 600 pop), 72 km (45 miles) from Arecibo (c. 49 300 pop), 84 km (52 miles) from Vega Baja (c. 29 300 pop), 76 km (47 miles) from Barceloneta (c. 22 300 pop), 80 km (50 miles) from Guayama (c. 21 600 pop). Nearby country/countries that might be effected, Puerto Rico (c. 3 917 000 pop).

Each year there are an estimated 130,000 minor quakes in the world. In the past 24 hours, there have been two, in the last 10 days four, in the past 30 days ten and in the last 365 days two hundred and fourty earthquakes of magnitude 3.0 or greater that has occurred nearby. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 15 km SSE of Guánica, Puerto Rico. This data comes from the USGS Earthquake Notification Service.

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Parameter	Value	Description
Magnitude	3.69 mb	The magnitude for the event.
Longitude	-66.8556° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	17.839° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	11 km	Depth of the event in kilometers.
Place	15 km SSE of Guánica, 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	2025-10-07 02:01:20	Time when the event occurred. UTC/GMT
Updated	2025-10-07 02:43:56	Time when the event was most recently updated. UTC/GMT
Timezone offset		Timezone offset from UTC in minutes at the event epicenter.
Felt	3	The total number of felt reports
CDI	2.9	The maximum reported intensity for the event.
MMI	2.663	The maximum estimated instrumental intensity for the event.
Alert Level	green	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	210	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	,us,pr,	A comma-separated list of network contributors.
Number of Stations Used	27	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.1381	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.14 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	224	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	pr2025280001	Id of event.
Event Code	2025280001	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000rf8d,pr2025280001,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.69 mag strikes near Guánica in Puerto Rico

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