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Minor earthquake: M2.87 quake has struck near Isabela in Puerto Rico


Earthquake location 18.8851S, -66.9591WA minor earthquake magnitude 2.87 (ml/mb) has occurred on Monday, 43 kilometers (27 miles) from Isabela in Puerto Rico. Exact location of earthquake, longitude -66.9591 West, latitude 18.8851 North, depth = 11 km. The earthquake occurred at a depth of 11 km (7 miles) below the earth’s surface. The temblor was reported at 03:45:57 / 3:45 am (local time epicenter). Exact time and date of earthquake 13/08/18 / 2018-08-13 07:45:57 / August 13, 2018 @ 7:45 am UTC/GMT. All ids that are associated to the event: pr2018225004. Unique identifier: pr2018225004.

Nearby country/countries, Puerto Rico (c. 3 917 000 pop) (That might be effected). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Utuado, Florida, Manatí. Earthquake epicenter was 53 km (33 miles) from Arecibo (c. 49 300 pop), 66 km (41 miles) from Barceloneta (c. 22 300 pop), 71 km (44 miles) from Manatí (c. 16 100 pop), 55 km (34 miles) from Aguadilla (c. 16 100 pop), 43 km (27 miles) from Isabela (c. 12 500 pop).

Each year there are an estimated 1,300,000 minor earthquakes in the world. In the past 24 hours, there have been one, in the last 10 days eight, in the past 30 days twenty-two and in the last 365 days two hundred and ninety earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage.

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 43 km N of Isabela, Puerto Rico.

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More information

Parameter Value Description
Magnitude 2.87 mb The magnitude for the event.
Longitude -66.9591° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.8851° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 11 km Depth of the event in kilometers.
Place 43km 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 2018-08-13 07:45:57 Time when the event occurred. UTC/GMT
Updated 2018-08-13 11:30:24 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 127 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 8 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.4444 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.27 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 315 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 pr2018225004 Id of event.
Event Code 2018225004 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr2018225004, A comma-separated list of event ids that are associated to an event.

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