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Minor earthquake 2.8 mag, 48 km NNE of Isabela, Puerto Rico


Earthquake location 18.9235S, -66.9018WA minor earthquake magnitude 2.8 (ml/mb) has struck on Tuesday, 48 kilometers (30 miles) from Isabela in Puerto Rico. Exact location of event, depth 43 km, -66.9018° West, 18.9235° North. Global time and date of event 05/08/15 / 2015-08-05 03:37:52 / August 5, 2015 @ 3:37 am UTC/GMT. The temblor was detected at 23:37:52 / 11:37 pm (local time epicenter). Id of earthquake: pr15217003. Event ids that are associated: pr15217003. The earthquake occurred at a depth of 43 km (27 miles) below the earth’s surface.

Epicenter of the earthquake was 54 km (33 miles) from Arecibo (c. 49 300 pop), 76 km (47 miles) from Vega Baja (c. 29 300 pop), 65 km (40 miles) from Barceloneta (c. 22 300 pop), 70 km (44 miles) from Manatí (c. 16 100 pop), 61 km (38 miles) from Aguadilla (c. 16 100 pop). Nearby country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Nearest cities/city/towns to hypocenter/epicentrum was Utuado, Vega Baja, Añasco (min 5000 pop).

In the past 24 hours, there have been three, in the last 10 days fourty-four, in the past 30 days one hundred and twelve and in the last 365 days two hundred and eighty-two earthquakes of magnitude 3.0 or greater that has struck near. Each year there are an estimated 1,300,000 minor earthquakes in the world. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage.

Did you feel the quake?

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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 48 km NNE of Isabela, Puerto Rico.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -66.9018° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.9235° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 43 km Depth of the event in kilometers.
Place 48km NNE 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 2015-08-05 03:37:52 Time when the event occurred. UTC/GMT
Updated 2015-08-05 05:10:49 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 121 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 15 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.49407341 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.21 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 244.8 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 pr15217003 Id of event.
Event Code 15217003 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr15217003, A comma-separated list of event ids that are associated to an event.

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