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Minor earthquake 3.1 mag, 19 km NNW of Hatillo, Puerto Rico

Earthquake location 18.6616S, -66.8704WA minor earthquake magnitude 3.1 (ml/mb) strikes 19 kilometers (12 miles) from Hatillo in Puerto Rico on Monday. Exact location of event, longitude -66.8704 West, latitude 18.6616 North, depth = 65 km. The earthquake was roughly at a depth of 65 km (40 miles). Event id: pr16347007. Ids that are associated to the earthquake: pr16347007. Exact time and date of earthquake 12/12/16 / 2016-12-12 22:23:27 / December 12, 2016 @ 10:23 pm UTC/GMT. The 3.1-magnitude earthquake has occurred at 18:23:27 / 6:23 pm (local time epicenter).

Nearby country/countries, Puerto Rico (c. 3 917 000 pop) (That might be effected). Nearest cities/city/villages to epicentrum/hypocenter was Barranquitas, Juana Díaz, Naranjito (min 5000 pop). Earthquake epicenter was 77 km (48 miles) from Ponce (c. 152 600 pop), 59 km (36 miles) from Mayagüez (c. 78 600 pop), 27 km (17 miles) from Arecibo (c. 49 300 pop), 76 km (47 miles) from Levittown (c. 29 800 pop), 56 km (35 miles) from Vega Baja (c. 29 300 pop).

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 five, in the past 30 days seventeen and in the last 365 days two hundred and eight earthquakes of magnitude 3.0 or greater that has struck near. There are an estimated 130,000 minor earthquakes in the world each year.

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. 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: 19 km NNW of Hatillo, Puerto Rico.

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More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude -66.8704° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.6616° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 65 km Depth of the event in kilometers.
Place 19km NNW of Hatillo, 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 2016-12-12 22:23:27 Time when the event occurred. UTC/GMT
Updated 2016-12-12 23:27:02 Time when the event was most recently updated. UTC/GMT
Timezone offset -240 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 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 14 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.29824067 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.23 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 226.8 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 pr16347007 Id of event.
Event Code 16347007 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr16347007, A comma-separated list of event ids that are associated to an event.

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