Light earthquake 4 mag, 142 km NNE of Vieques, Puerto Rico

A light earthquake magnitude 4 (ml/mb) strikes 142 km NNE of Vieques, Puerto Rico (88 miles) on Monday. Exact location of event, depth 34 km, -65.4814° West, 19.666° North. Exact time and date of event in UTC/GMT: 07/12/15 / 2015-12-07 08:46:00 / December 7, 2015 @ 8:46 am. The 4-magnitude earthquake was detected at 04:46:00 / 4:46 am (local time epicenter). Event id: pr15341001. Ids that are associated to the earthquake: pr15341001. The earthquake occurred at a depth of 34 km (21 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

There are an estimated 13,000 light quakes in the world each year. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days twenty-six, in the past 30 days thirty-three and in the last 365 days six hundred and twenty-six earthquakes of magnitude 3.0 or greater that have been detected nearby.

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. 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: 142 km NNE of Vieques, Puerto Rico.

Puerto Rico Vieques

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Parameter	Value	Description
Magnitude	4 mb	The magnitude for the event.
Longitude	-65.4814° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	19.666° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	34 km	Depth of the event in kilometers.
Place	142km NNE of Vieques, 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	2015-12-07 08:46:00	Time when the event occurred. UTC/GMT
Updated	2015-12-07 09:45:42	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	246	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	17	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	1.3636426	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.5 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	266.4	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	pr15341001	Id of event.
Event Code	15341001	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,pr15341001,	A comma-separated list of event ids that are associated to an event.

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Light earthquake 4 mag, 142 km NNE of Vieques, Puerto Rico

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