Minor earthquake: M3.55 quake has struck near Fajardo in Puerto Rico

A minor earthquake magnitude 3.55 (ml/mb) has occurred on Saturday, 12 kilometers (7 miles) from Fajardo in Puerto Rico. The temblor was picked up at 01:13:44 / 1:13 am (local time epicenter). The epicenter of the earthquake was roughly 109 km (68 miles) below the earth’s surface. Exact location, longitude -65.6026° West, latitude 18.4241° North, depth = 109 km. Exact time and date of earthquake 30/08/25 / 2025-08-30 01:13:44 / August 30, 2025 @ 1:13 am UTC/GMT. Event id: pr2025242000. Ids that are associated to the earthquake: pr2025242000.

Closest city/cities/towns to epicentrum/hypocenter was Coco, Vega Baja, Ceiba (min 5000 pop). Epicenter of the event was 53 km (33 miles) from San Juan (c. 418 100 pop), 58 km (36 miles) from Bayamón (c. 203 500 pop), 38 km (23 miles) from Carolina (c. 170 400 pop), 52 km (32 miles) from Caguas (c. 86 800 pop), 54 km (34 miles) from Guaynabo (c. 81 400 pop), 43 km (27 miles) from Trujillo Alto (c. 54 200 pop). Nearby country/countries, Puerto Rico (c. 3 917 000 pop) (That might be effected).

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

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home 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: 12 km NNE of Fajardo, Puerto Rico.

More information

Parameter	Value	Description
Magnitude	3.55 mb	The magnitude for the event.
Longitude	-65.6026° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	18.4241° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	109 km	Depth of the event in kilometers.
Place	12 km NNE of Fajardo, 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	2025-08-30 01:13:44	Time when the event occurred. UTC/GMT
Updated	2025-08-30 01:56:50	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	194	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	21	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.4946	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.27 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	172	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	pr2025242000	Id of event.
Event Code	2025242000	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,pr2025242000,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake: M3.55 quake has struck near Fajardo in Puerto Rico

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