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Minor earthquake, 3 mag has occurred near San Antonio in Puerto Rico

Earthquake location 18.8563S, -67.459WA minor earthquake magnitude 3 (ml/mb) strikes 55 kilometers (34 miles) from San Antonio in Puerto Rico on Monday. The epicenter of the earthquake was roughly 17 km (11 miles) below the earth’s surface. Exact time and date of earthquake 20/10/15 / 2015-10-20 03:31:14 / October 20, 2015 @ 3:31 am UTC/GMT. Exact location of event, longitude -67.459 West, latitude 18.8563 North, depth = 17 km. The temblor was reported at 23:31:14 / 11:31 pm (local time epicenter). Event ids that are associated to the earthquake: pr15293000. Id of event: pr15293000.

The epicenter was 57 km (36 miles) from Aguadilla (c. 16 100 pop), 60 km (38 miles) from Isabela (c. 12 500 pop), 76 km (47 miles) from San Sebastián (c. 11 600 pop), 72 km (45 miles) from Añasco (c. 6 100 pop), 78 km (49 miles) from Hatillo (c. 5 600 pop). Country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Closest city/cities/towns to epicentrum/hypocenter was Hatillo, Camuy, San Sebastián (min 5000 pop).

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

Questions or comments?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 55 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 mb The magnitude for the event.
Longitude -67.459° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.8563° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 17 km Depth of the event in kilometers.
Place 55km 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 2015-10-20 03:31:14 Time when the event occurred. UTC/GMT
Updated 2015-10-20 03:57:14 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 138 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 18 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.46892058 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.3 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 280.8 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 pr15293000 Id of event.
Event Code 15293000 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr15293000, A comma-separated list of event ids that are associated to an event.

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