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Light earthquake: M4.1 quake has struck near Brenas in Puerto Rico


Earthquake location 19.4344S, -66.3202WA light earthquake with magnitude 4.1 (ml/mb) was detected on Tuesday, 94 km N of Brenas, Puerto Rico (58 miles). The epicenter of the earthquake was roughly 55 km (34 miles) below the earth’s surface. Event id: pr15237001. Ids that are associated to the earthquake: us100034np, pr15237001. Exact location of earthquake, longitude -66.3202 West, latitude 19.4344 North, depth = 55 km. Global time and date of event 25/08/15 / 2015-08-25 05:27:20 / August 25, 2015 @ 5:27 am UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was picked up at 01:27:20 / 1:27 am (local time epicenter).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light earthquakes in the world each year. In the past 24 hours, there have been three, in the last 10 days thirty-two, in the past 30 days one hundred and fifty-nine and in the last 365 days four hundred and ten earthquakes of magnitude 3.0 or greater that has struck near.

Did you feel the quake?

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: 94 km N of Brenas, Puerto Rico.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -66.3202° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 19.4344° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 55 km Depth of the event in kilometers.
Place 94km 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 2015-08-25 05:27:20 Time when the event occurred. UTC/GMT
Updated 2015-08-25 05:59:26 Time when the event was most recently updated. UTC/GMT
Timezone offset -240 Timezone offset from UTC in minutes at the event epicenter.
Felt 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 259 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 ,us,pr, A comma-separated list of network contributors.
Number of Stations Used 18 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.97107882 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.49 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 pr15237001 Id of event.
Event Code 15237001 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us100034np,pr15237001, A comma-separated list of event ids that are associated to an event.

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