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Minor earthquake: M2.8 quake has struck near Isabela in Puerto Rico


Earthquake location 18.9225S, -67.0111WA minor earthquake magnitude 2.8 (ml/mb) has occurred on Wednesday, 46 kilometers (29 miles) from Isabela in Puerto Rico. Global date and time of event UTC/GMT: 02/12/15 / 2015-12-02 08:41:40 / December 2, 2015 @ 8:41 am. Id of earthquake: pr15336000. Event ids that are associated: pr15336000. The temblor was reported at 04:41:40 / 4:41 am (local time epicenter). Exact location of event, longitude -67.0111 West, latitude 18.9225 North, depth = 35 km. The earthquake occurred at a depth of 35 km (22 miles) below the earth’s surface.

Epicenter of the event was 59 km (37 miles) from Arecibo (c. 49 300 pop), 72 km (45 miles) from Barceloneta (c. 22 300 pop), 57 km (35 miles) from Aguadilla (c. 16 100 pop), 47 km (29 miles) from Isabela (c. 12 500 pop), 65 km (41 miles) from San Sebastián (c. 11 600 pop). Nearby country/countries, Puerto Rico (c. 3 917 000 pop) (That might be effected). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Las Marías, Añasco, Barceloneta.

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 four hundred and fourty-seven earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. There are an estimated 1,300,000 minor quakes in the world each year.

Did you feel the quake?

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. 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: 46 km N of Isabela, Puerto Rico.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -67.0111° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.9225° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 35 km Depth of the event in kilometers.
Place 46km N of Isabela, 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 2015-12-02 08:41:40 Time when the event occurred. UTC/GMT
Updated 2015-12-02 11:55:45 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 121 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 4 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.46263237 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.07 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 324 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 pr15336000 Id of event.
Event Code 15336000 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr15336000, A comma-separated list of event ids that are associated to an event.

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