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Minor earthquake: M3.1 quake has struck near San Antonio in Puerto Rico


Earthquake location 18.9423S, -67.432WA minor earthquake with magnitude 3.1 (ml/mb) was reported 60 kilometers (37 miles) from San Antonio in Puerto Rico on Monday. Date and time of earthquake in UTC/GMT: 28/09/15 / 2015-09-28 06:58:48 / September 28, 2015 @ 6:58 am. Event id: pr15271002. Ids that are associated to the earthquake: pr15271002. Exact location of event, longitude -67.432 West, latitude 18.9423 North, depth = 61 km. The temblor was detected at 02:58:48 / 2:58 am (local time epicenter). The earthquake was roughly at a depth of 61 km (38 miles).

Event epicenter was 64 km (40 miles) from Aguadilla (c. 16 100 pop), 65 km (41 miles) from Isabela (c. 12 500 pop), 80 km (49 miles) from Añasco (c. 6 100 pop), 74 km (46 miles) from Quebradillas (c. 5 600 pop), 70 km (43 miles) from Moca (c. 5 000 pop). Nearest cities/city/towns to hypocenter/epicentrum was Camuy, Añasco, Quebradillas (min 5000 pop). Nearby country/countries that might be effected, Puerto Rico (c. 3 917 000 pop).

Earthquakes 2.5 to 3.2 are often felt, but only causes minor damage. In the past 24 hours, there have been two, in the last 10 days twenty-three, in the past 30 days fourty-six and in the last 365 days three hundred and thirty-one earthquakes of magnitude 3.0 or greater that has struck near. Each year there are an estimated 130,000 minor quakes in the world.

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, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 60 km NW of San Antonio, Puerto Rico. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude -67.432° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.9423° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 61 km Depth of the event in kilometers.
Place 60km NW 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 2015-09-28 06:58:48 Time when the event occurred. UTC/GMT
Updated 2015-09-28 07:36:10 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 148 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 16 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.55695548 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.4 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 270 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 pr15271002 Id of event.
Event Code 15271002 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr15271002, A comma-separated list of event ids that are associated to an event.

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