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Minor earthquake 2.87 mag, 45 km NNW of San Antonio, Puerto Rico


Earthquake location 18.8845S, -67.2371WA minor earthquake magnitude 2.87 (ml/mb) strikes 45 kilometers (28 miles) from San Antonio in Puerto Rico on Saturday. The temblor was picked up at 21:08:58 / 9:08 pm (local time epicenter). Exact location of earthquake, -67.2371° West, 18.8845° North, depth 10 km. Exact time and date of event in UTC/GMT: 08/12/19 / 2019-12-08 01:08:58 / December 8, 2019 @ 1:08 am. All ids that are associated to the event: pr2019342001. Unique identifier: pr2019342001. The earthquake was roughly at a depth of 10 km (6 miles).

The epicenter was 77 km (48 miles) from Mayagüez (c. 78 600 pop), 72 km (44 miles) from Arecibo (c. 49 300 pop), 52 km (32 miles) from Aguadilla (c. 16 100 pop), 48 km (30 miles) from Isabela (c. 12 500 pop), 66 km (41 miles) from San Sebastián (c. 11 600 pop). Nearest cities/city/towns to hypocenter/epicentrum was Mayagüez, Lares, Las Marías (min 5000 pop). Close country/countries that might be effected, Puerto Rico (c. 3 917 000 pop).

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

Did you feel anything?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 45 km NNW of San Antonio, Puerto Rico. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 2.87 mb The magnitude for the event.
Longitude -67.2371° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.8845° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 45km NNW 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 2019-12-08 01:08:58 Time when the event occurred. UTC/GMT
Updated 2019-12-08 01:59:11 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 19 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.4356 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 205 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 pr2019342001 Id of event.
Event Code 2019342001 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr2019342001, A comma-separated list of event ids that are associated to an event.

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