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

A minor earthquake magnitude 3.1 (ml/mb) has struck on Sunday, 44 kilometers (27 miles) from Brenas in Puerto Rico. Exact time and date of earthquake 10/12/17 / 2017-12-10 08:35:28 / December 10, 2017 @ 8:35 am UTC/GMT. The 3.1-magnitude earthquake has occurred at 04:35:28 / 4:35 am (local time epicenter). The earthquake occurred at a depth of 37 km (23 miles) below the earth’s surface. Id of earthquake: pr2017344004. Event ids that are associated: pr2017344004, us2000c2jw. Exact location of earthquake, longitude -66.3108 West, latitude 18.945 North, depth = 37 km.

Nearest cities/city/towns to hypocenter/epicentrum was Orocovis, Aguas Buenas, Canovanas (min 5000 pop). Country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Epicenter of the earthquake was 57 km (36 miles) from San Juan (c. 418 100 pop), 63 km (39 miles) from Bayamón (c. 203 500 pop), 73 km (45 miles) from Carolina (c. 170 400 pop), 69 km (43 miles) from Guaynabo (c. 81 400 pop), 73 km (45 miles) from Trujillo Alto (c. 54 200 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 fourteen, in the past 30 days twenty-three and in the last 365 days two hundred and fifty-two earthquakes of magnitude 3.0 or greater that has occurred nearby. Each year there are an estimated 130,000 minor quakes in the world.

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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: 44 km N of Brenas, Puerto Rico. This information comes from the USGS Earthquake Notification Service.

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Parameter	Value	Description
Magnitude	3.1 mb	The magnitude for the event.
Longitude	-66.3108° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	18.945° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	37 km	Depth of the event in kilometers.
Place	44km N of Brenas, 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	2017-12-10 08:35:28	Time when the event occurred. UTC/GMT
Updated	2017-12-10 08:53:26	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,us,	A comma-separated list of network contributors.
Number of Stations Used	9	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.5165	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.41 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	301	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	pr2017344004	Id of event.
Event Code	2017344004	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,pr2017344004,us2000c2jw,	A comma-separated list of event ids that are associated to an event.

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

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