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Minor earthquake, 3 mag strikes near San Antonio in Puerto Rico


Earthquake location 18.8323S, -67.1883WA minor earthquake with magnitude 3 (ml/mb) was detected on Wednesday, 38 kilometers (24 miles) from San Antonio in Puerto Rico. The temblor was reported at 14:27:55 / 2:27 pm (local time epicenter). Exact location of event, longitude -67.1883 West, latitude 18.8323 North, depth = 12 km. Id of earthquake: pr16069002. Event ids that are associated: pr16069002. The earthquake occurred at a depth of 12 km (7 miles) below the earth’s surface. Exact time and date of event in UTC/GMT: 09/03/16 / 2016-03-09 18:27:55 / March 9, 2016 @ 6:27 pm.

Close country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Closest city/cities/towns to epicentrum/hypocenter was Hormigueros, Maricao, Mayagüez (min 5000 pop). Epicenter of the event was 70 km (44 miles) from Mayagüez (c. 78 600 pop), 64 km (40 miles) from Arecibo (c. 49 300 pop), 45 km (28 miles) from Aguadilla (c. 16 100 pop), 41 km (25 miles) from Isabela (c. 12 500 pop), 77 km (48 miles) from Hormigueros (c. 11 900 pop).

There are an estimated 130,000 minor earthquakes in the world each year. Earthquakes 2.5 to 3.2 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days ten, in the past 30 days twenty-three and in the last 365 days three hundred and seventy-three earthquakes of magnitude 3.0 or greater that have been detected nearby.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 38 km NNW of San Antonio, Puerto Rico. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 3 mb The magnitude for the event.
Longitude -67.1883° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.8323° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 12 km Depth of the event in kilometers.
Place 38km 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 2016-03-09 18:27:55 Time when the event occurred. UTC/GMT
Updated 2016-03-09 19:32:29 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 138 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 6 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.3701059 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.18 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 324 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 pr16069002 Id of event.
Event Code 16069002 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr16069002, A comma-separated list of event ids that are associated to an event.

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