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


Earthquake location 19.3638S, -65.4925WA minor earthquake with magnitude 3.1 (ml/mb) was reported 109 km NNE of Vieques, Puerto Rico (68 miles) on Thursday. The earthquake occurred at a depth of 34 km (21 miles). Unique identifier: pr2019227008. Ids that are associated to the event: pr2019227008. The 3.1-magnitude earthquake was detected at 12:39:09 / 12:39 pm (local time epicenter). Global date and time of event UTC/GMT: 15/08/19 / 2019-08-15 16:39:09 / August 15, 2019 @ 4:39 pm. Exact location of earthquake, -65.4925° West, 19.3638° North, depth 34 km.

In the past 24 hours, there have been one, in the last 10 days eight, in the past 30 days eighteen and in the last 365 days four hundred earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 2.5 to 3.2 are often felt, but only causes minor damage. Each year there are an estimated 130,000 minor quakes in the world.

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. 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: 109 km NNE of Vieques, Puerto Rico.

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More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude -65.4925° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 19.3638° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 34 km Depth of the event in kilometers.
Place 109km 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 2019-08-15 16:39:09 Time when the event occurred. UTC/GMT
Updated 2019-08-15 18:31:03 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 10 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.2091 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.26 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 326 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 pr2019227008 Id of event.
Event Code 2019227008 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr2019227008, A comma-separated list of event ids that are associated to an event.

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