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Minor earthquake 3 mag, 63 km N of Loiza, Puerto Rico


Earthquake location 19.0046S, -65.8171WA minor earthquake with magnitude 3 (ml/mb) was detected on Sunday, 63 kilometers (39 miles) from Loiza in Puerto Rico. Unique identifier: pr15250002. Ids that are associated to the event: pr15250002. Date and time of earthquake in UTC/GMT: 07/09/15 / 2015-09-07 03:57:49 / September 7, 2015 @ 3:57 am. The earthquake occurred at a depth of 7 km (4 miles) below the earth’s surface. Exact location of event, depth 7 km, -65.8171° West, 19.0046° North. The temblor was reported at 23:57:49 / 11:57 pm (local time epicenter).

Closest city/cities/towns to epicentrum/hypocenter was Campanilla, Candelaria, Guaynabo (min 5000 pop). Close country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Event epicenter was 67 km (42 miles) from San Juan (c. 418 100 pop), 76 km (47 miles) from Bayamón (c. 203 500 pop), 71 km (44 miles) from Carolina (c. 170 400 pop), 78 km (49 miles) from Guaynabo (c. 81 400 pop), 75 km (47 miles) from Trujillo Alto (c. 54 200 pop).

There are an estimated 130,000 minor quakes 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 four, in the last 10 days fourty-three, in the past 30 days one hundred and thirty-six and in the last 365 days five hundred and fifty-three earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Questions or comments?

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. 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: 63 km N of Loiza, Puerto Rico.

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More information

Parameter Value Description
Magnitude 3 mb The magnitude for the event.
Longitude -65.8171° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 19.0046° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 7 km Depth of the event in kilometers.
Place 63km N of Loiza, 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 2015-09-07 03:57:49 Time when the event occurred. UTC/GMT
Updated 2015-09-07 04:56:28 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 11 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.7285337 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.11 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 pr15250002 Id of event.
Event Code 15250002 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr15250002, A comma-separated list of event ids that are associated to an event.

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