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


Earthquake location 19.1103S, -66.9555WA minor earthquake magnitude 3.1 (ml/mb) has struck on Thursday, 67 kilometers (42 miles) from Isabela in Puerto Rico. Exact time and date of event in UTC/GMT: 06/08/15 / 2015-08-06 04:29:39 / August 6, 2015 @ 4:29 am. Event ids that are associated to the earthquake: pr15218006. Id of event: pr15218006. The epicenter of the earthquake was roughly 58 km (36 miles) below the earth’s surface. The temblor was picked up at 00:29:39 / 12:29 am (local time epicenter). Exact location of earthquake, longitude -66.9555 West, latitude 19.1103 North, depth = 58 km.

Closest city/cities/towns to epicentrum/hypocenter was Aguadilla, Arecibo, Quebradillas (min 5000 pop). Close country/countries, Puerto Rico (c. 3 917 000 pop) (That might be effected). Epicenter of the event was 75 km (47 miles) from Arecibo (c. 49 300 pop), 79 km (49 miles) from Aguadilla (c. 16 100 pop), 68 km (42 miles) from Isabela (c. 12 500 pop), 71 km (44 miles) from Hatillo (c. 5 600 pop), 71 km (44 miles) from Quebradillas (c. 5 600 pop).

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

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: 67 km N 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 -66.9555° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 19.1103° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 58 km Depth of the event in kilometers.
Place 67km N 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 2015-08-06 04:29:39 Time when the event occurred. UTC/GMT
Updated 2015-08-06 09:12:46 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 11 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.65577016 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.23 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 270 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 pr15218006 Id of event.
Event Code 15218006 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr15218006, A comma-separated list of event ids that are associated to an event.

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