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Earthquake: M 3.1 quake strikes near Aibonito in Puerto Rico


Earthquake location 18.1788S, -66.2584WA minor earthquake magnitude 3.1 (mg/mb) has occurred on Sunday, 4 kilometers (2 miles) from Aibonito in Puerto Rico. The temblor was reported at 03:01:00 / 3:01 am (local time epicenter) at a depth of 9 km (6 miles). Global time of event 2015-02-01 07:01:00 UTC/GMT. A tsunami warning has not been issued, according to the U.S. Geological Survey. Exact location of event, longitude -66.2584 West, latitude 18.1788 North, depth 9 km.

Close countries, Puerto Rico (c. 3 917 000 pop). The epicenter was 36 km (22 miles) from San Juan (c. 418 100 pop), 27 km (17 miles) from Bayamón (c. 203 500 pop), 39 km (24 miles) from Carolina (c. 170 400 pop), 42 km (26 miles) from Ponce (c. 152 600 pop), 23 km (14 miles) from Caguas (c. 86 800 pop). Nearest city, towns to epicentrum/hypocenter was San Sebastián, Quebradillas, Las Marías.

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Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded in: 4 km N of Aibonito, Puerto Rico.


More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude -66.2584° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.1788° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 9 km Depth of the event in kilometers.
Place 4km N of Aibonito, 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 2015-02-01 07:01:00 Time when the event occurred. UTC/GMT
Updated 2015-02-01 07:24:35 Time when the event was most recently updated. UTC/GMT
Timezone offset -240 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 148 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 16 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.20930746 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.34 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 90 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 pr15032002 Id of event.
Event Code 15032002 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS pr15032002 A comma-separated list of event ids that are associated to an event.

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