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Minor earthquake: M2.8 quake has struck near San Antonio in Puerto Rico



Earthquake location 18.7975S, -67.1498WA minor earthquake magnitude 2.8 (ml/mb) has struck on Thursday, 34 kilometers (21 miles) from San Antonio in Puerto Rico. Exact location of event, longitude -67.1498 West, latitude 18.7975 North, depth = 30 km. The temblor was picked up at 09:02:04 / 9:02 am (local time epicenter). Id of earthquake: pr16112001. Event ids that are associated: pr16112001. The epicenter was at a depth of 30 km (19 miles). Exact time and date of event in UTC/GMT: 21/04/16 / 2016-04-21 13:02:04 / April 21, 2016 @ 1:02 pm.

Nearby country/countries, Puerto Rico (c. 3 917 000 pop) (That might be effected). Epicenter of the earthquake was 66 km (41 miles) from Mayagüez (c. 78 600 pop), 58 km (36 miles) from Arecibo (c. 49 300 pop), 75 km (47 miles) from Barceloneta (c. 22 300 pop), 41 km (26 miles) from Aguadilla (c. 16 100 pop), 36 km (22 miles) from Isabela (c. 12 500 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Utuado, Barceloneta, Hormigueros.

There are an estimated 1,300,000 minor earthquakes in the world each year. In the past 24 hours, there have been 0, in the last 10 days two, in the past 30 days nine and in the last 365 days three hundred and sixty-seven earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage.

Questions or comments?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 34 km N of San Antonio, Puerto Rico.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -67.1498° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.7975° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 30 km Depth of the event in kilometers.
Place 34km N 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 2016-04-21 13:02:04 Time when the event occurred. UTC/GMT
Updated 2016-04-21 13:20:24 Time when the event was most recently updated. UTC/GMT
Timezone offset -240 Timezone offset from UTC in minutes at the event epicenter.
Felt 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 9 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.32968171 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.34 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 252 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 pr16112001 Id of event.
Event Code 16112001 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr16112001, A comma-separated list of event ids that are associated to an event.

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