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Minor earthquake, 3.1 mag has occurred near San Antonio in Puerto Rico


Earthquake location 18.9838S, -67.5289WA minor earthquake with magnitude 3.1 (ml/mb) was reported 70 kilometers (43 miles) from San Antonio in Puerto Rico on Tuesday. The temblor was detected at 22:49:21 / 10:49 pm (local time epicenter). Exact location of event, depth 33 km, -67.5289° West, 18.9838° North. The earthquake occurred at a depth of 33 km (21 miles). Global date and time of event UTC/GMT: 09/12/15 / 2015-12-09 03:49:21 / December 9, 2015 @ 3:49 am. Unique identifier: pr15343003. Ids that are associated to the event: pr15343003.

Earthquake epicenter was 73 km (46 miles) from Aguadilla (c. 16 100 pop), 76 km (47 miles) from Isabela (c. 12 500 pop), 79 km (49 miles) from Moca (c. 5 000 pop), 76 km (47 miles) from Aguada (c. 4 000 pop), 77 km (48 miles) from Rincón (c. 1 500 pop). Closest city/cities/towns to epicentrum/hypocenter was Moca, Rincón, Aguada (min 5000 pop). Close country/countries, Puerto Rico (c. 3 917 000 pop) (That might be effected).

Earthquakes 2.5 to 3.2 are often felt, but only causes minor damage. Each year there are an estimated 130,000 minor quakes in the world. In the past 24 hours, there have been six, in the last 10 days eight, in the past 30 days twenty and in the last 365 days three hundred and thirty-five earthquakes of magnitude 3.0 or greater that have been detected in the same area.

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 70 km NW of San Antonio, Puerto Rico. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude -67.5289° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.9838° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 33 km Depth of the event in kilometers.
Place 70km NW of San Antonio, 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 2015-12-09 03:49:21 Time when the event occurred. UTC/GMT
Updated 2015-12-09 08:07:10 Time when the event was most recently updated. UTC/GMT
Timezone offset -300 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 13 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.59737966 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.44 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 298.8 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 pr15343003 Id of event.
Event Code 15343003 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr15343003, A comma-separated list of event ids that are associated to an event.

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