Minor earthquake, 3.7 mag was detected near Guánica in Puerto Rico

A minor earthquake with magnitude 3.7 (ml/mb) was reported 18 kilometers (11 miles) from Guánica in Puerto Rico on Tuesday. Id of earthquake: us6000rf9n. Event ids that are associated: us6000rf9n. The epicenter of the earthquake was roughly 22.925 km (14 miles) below the earth’s surface. The 3.7-magnitude earthquake was detected at 05:19:09 / 5:19 am (local time epicenter). Global date and time of event UTC/GMT: 07/10/25 / 2025-10-07 05:19:09 / October 7, 2025 @ 5:19 am. Exact location of earthquake, -66.8701° West, 17.8089° North, depth 22.925 km.

Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Naranjito, Cidra, Corozal. Country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Event epicenter was 35 km (22 miles) from Ponce (c. 152 600 pop), 52 km (32 miles) from Mayagüez (c. 78 600 pop), 76 km (47 miles) from Arecibo (c. 49 300 pop), 79 km (49 miles) from Barceloneta (c. 22 300 pop), 82 km (51 miles) from Guayama (c. 21 600 pop), 25 km (16 miles) from Yauco (c. 20 300 pop).

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

Did you feel it?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 18 km SSE of Guánica, Puerto Rico.

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Parameter	Value	Description
Magnitude	3.7 mb	The magnitude for the event.
Longitude	-66.8701° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	17.8089° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	22.925 km	Depth of the event in kilometers.
Place	18 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 05:19:09	Time when the event occurred. UTC/GMT
Updated	2025-10-07 05:33:48	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	211	A number describing how significant the event is. Larger numbers indicate a more significant event.
Network	us	The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources	,us,	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	0.23	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.84 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	102	The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type	ml	The method or algorithm used to calculate the preferred magnitude for the event.
Event Type	earthquake	Type of seismic event.
Event ID	us6000rf9n	Id of event.
Event Code	6000rf9n	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000rf9n,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.7 mag was detected near Guánica in Puerto Rico

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