Minor earthquake, 3.18 mag was detected near Luquillo in Puerto Rico

A minor earthquake magnitude 3.18 (ml/mb) has occurred on Sunday, 24 kilometers (15 miles) from Luquillo in Puerto Rico. Exact location of earthquake, longitude -65.573666666667 West, latitude 18.55 North, depth = 34.27 km. Date and time of earthquake in UTC/GMT: 20/07/25 / 2025-07-20 08:55:09 / July 20, 2025 @ 8:55 am. The epicenter was at a depth of 34.27 km (21 miles). The temblor was picked up at 08:55:09 / 8:55 am (local time epicenter). Event ids that are associated to the earthquake: pr71489803. Id of event: pr71489803.

Closest city/cities/towns to epicentrum/hypocenter was Cayey, Comerío, San Antonio (min 5000 pop). Epicenter of the event was 57 km (35 miles) from San Juan (c. 418 100 pop), 64 km (40 miles) from Bayamón (c. 203 500 pop), 45 km (28 miles) from Carolina (c. 170 400 pop), 61 km (38 miles) from Caguas (c. 86 800 pop), 61 km (38 miles) from Guaynabo (c. 81 400 pop). Close country/countries that might be effected, Puerto Rico (c. 3 917 000 pop).

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

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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: 24 km NE of Luquillo, Puerto Rico.

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Parameter	Value	Description
Magnitude	3.18 mb	The magnitude for the event.
Longitude	-65.573666666667° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	18.55° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	34.27 km	Depth of the event in kilometers.
Place	24 km NE of Luquillo, 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	2025-07-20 08:55:09	Time when the event occurred. UTC/GMT
Updated	2025-07-20 09:11:35	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	23	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.3149	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.29 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	189	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	pr71489803	Id of event.
Event Code	71489803	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,pr71489803,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.18 mag was detected near Luquillo in Puerto Rico

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