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Minor earthquake: M3.12 quake has struck near Rincón in Puerto Rico


Earthquake location 18.4395S, -67.4111WA minor earthquake magnitude 3.12 (ml/mb) strikes 20 kilometers (12 miles) from Rincón in Puerto Rico on Saturday. All ids that are associated to the event: pr2020221017. Unique identifier: pr2020221017. Exact location of earthquake, -67.4111° West, 18.4395° North, depth 21 km. The epicenter of the earthquake was roughly 21 km (13 miles) below the earth’s surface. The 3.12-magnitude earthquake was detected at 17:50:58 / 5:50 pm (local time epicenter). Global time and date of event 08/08/20 / 2020-08-08 17:50:58 / August 8, 2020 @ 5:50 pm UTC/GMT.

Earthquake epicenter was 39 km (24 miles) from Mayagüez (c. 78 600 pop), 73 km (46 miles) from Arecibo (c. 49 300 pop), 74 km (46 miles) from Yauco (c. 20 300 pop), 79 km (49 miles) from Adjuntas (c. 19 500 pop), 27 km (17 miles) from Aguadilla (c. 16 100 pop). Nearest cities/city/villages to epicentrum/hypocenter was Guayanilla, Adjuntas, Adjuntas (min 5000 pop). Nearby country/countries that might be effected, Puerto Rico (c. 3 917 000 pop).

In the past 24 hours, there have been thirty-three, in the last 10 days sixty-two, in the past 30 days one hundred and sixty-one and in the last 365 days three thousand, six hundred earthquakes of magnitude 3.0 or greater that have been detected in the same area. Each 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.

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. 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: 20 km WNW of Rincón, Puerto Rico.

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More information

Parameter Value Description
Magnitude 3.12 mb The magnitude for the event.
Longitude -67.4111° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.4395° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 21 km Depth of the event in kilometers.
Place 20 km WNW of Rincón, 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 2020-08-08 17:50:58 Time when the event occurred. UTC/GMT
Updated 2020-08-16 08:33:31 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 150 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 18 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.0875 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.16 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 219 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 pr2020221017 Id of event.
Event Code 2020221017 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr2020221017, A comma-separated list of event ids that are associated to an event.

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