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Minor earthquake, 3.1 mag has occurred near Isabela in Puerto Rico


Earthquake location 18.6541S, -67.0569WA minor earthquake magnitude 3.1 (ml/mb) has occurred on Sunday, 17 kilometers (11 miles) from Isabela in Puerto Rico. The temblor was reported at 22:18:04 / 10:18 pm (local time epicenter). The earthquake occurred at a depth of 78 km (48 miles) below the earth’s surface. Exact time and date of event in UTC/GMT: 17/08/15 / 2015-08-17 02:18:04 / August 17, 2015 @ 2:18 am. Exact location of earthquake, -67.0569° West, 18.6541° North, depth 78 km. Event ids that are associated to the earthquake: pr15229002. Id of event: pr15229002.

Nearby country/countries, Puerto Rico (c. 3 917 000 pop) (That might be effected). Earthquake epicenter was 51 km (32 miles) from Mayagüez (c. 78 600 pop), 41 km (26 miles) from Arecibo (c. 49 300 pop), 74 km (46 miles) from Vega Baja (c. 29 300 pop), 59 km (37 miles) from Barceloneta (c. 22 300 pop), 72 km (45 miles) from Yauco (c. 20 300 pop). Nearest cities/city/villages to epicentrum/hypocenter was Ceiba, Morovis, Guánica (min 5000 pop).

In the past 24 hours, there have been eight, in the last 10 days twenty-two, in the past 30 days eighty-nine and in the last 365 days two hundred and eighty-seven earthquakes of magnitude 3.0 or greater that have been detected in the same area. 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 react? Was there any damage to buildings? Leave a comment or report about shaking, activity 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: 17 km NNW of Isabela, 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 -67.0569° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.6541° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 78 km Depth of the event in kilometers.
Place 17km NNW of Isabela, 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 2015-08-17 02:18:04 Time when the event occurred. UTC/GMT
Updated 2015-08-17 10:20:35 Time when the event was most recently updated. UTC/GMT
Timezone offset -240 Timezone offset from UTC in minutes at the event epicenter.
Felt 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 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 3 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.20014922 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.28 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 352.8 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 pr15229002 Id of event.
Event Code 15229002 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr15229002, A comma-separated list of event ids that are associated to an event.

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