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Minor earthquake, 2.9 mag strikes near San Juan in Puerto Rico



Earthquake location 18.8164S, -66.0791WA minor earthquake magnitude 2.9 (ml/mb) strikes 38 kilometers (24 miles) from San Juan in Puerto Rico on Tuesday. Id of earthquake: pr16355001. Event ids that are associated: pr16355001. The 2.9-magnitude earthquake has occurred at 01:02:30 / 1:02 am (local time epicenter). Exact location of event, depth 39 km, -66.0791° West, 18.8164° North. Exact time and date of event in UTC/GMT: 20/12/16 / 2016-12-20 05:02:30 / December 20, 2016 @ 5:02 am. The epicenter of the earthquake was roughly 39 km (24 miles) below the earth’s surface.

Epicenter of the event was 39 km (24 miles) from San Juan (c. 418 100 pop), 47 km (29 miles) from Bayamón (c. 203 500 pop), 50 km (31 miles) from Carolina (c. 170 400 pop), 65 km (40 miles) from Caguas (c. 86 800 pop), 51 km (32 miles) from Guaynabo (c. 81 400 pop). Country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Naguabo, Ceiba, Barranquitas.

In the past 24 hours, there have been 0, in the last 10 days five, in the past 30 days eighteen and in the last 365 days two hundred and fifteen earthquakes of magnitude 3.0 or greater that have been detected nearby. Each year there are an estimated 130,000 minor earthquakes in the world. Earthquakes 2.5 to 3.2 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: 38 km N of San Juan, Puerto Rico.

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More information

Parameter Value Description
Magnitude 2.9 mb The magnitude for the event.
Longitude -66.0791° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.8164° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 39 km Depth of the event in kilometers.
Place 38km N of San Juan, 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 2016-12-20 05:02:30 Time when the event occurred. UTC/GMT
Updated 2016-12-20 07:29:22 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 129 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 12 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.50485319 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.2 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 230.4 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 pr16355001 Id of event.
Event Code 16355001 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr16355001, A comma-separated list of event ids that are associated to an event.

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