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Minor earthquake, 2.8 mag has occurred near Isabela in Puerto Rico


Earthquake location 18.9563S, -67.0595WA minor earthquake with magnitude 2.8 (ml/mb) was reported 50 kilometers (31 miles) from Isabela in Puerto Rico on Sunday. Event id: pr2017358005. Ids that are associated to the earthquake: pr2017358005. Exact location, longitude -67.0595° West, latitude 18.9563° North, depth = 34 km. Global date and time of event UTC/GMT: 24/12/17 / 2017-12-24 12:55:26 / December 24, 2017 @ 12:55 pm. The earthquake was roughly at a depth of 34 km (21 miles). The temblor was reported at 08:55:26 / 8:55 am (local time epicenter).

Epicenter of the event was 65 km (40 miles) from Arecibo (c. 49 300 pop), 60 km (37 miles) from Aguadilla (c. 16 100 pop), 51 km (32 miles) from Isabela (c. 12 500 pop), 69 km (43 miles) from San Sebastián (c. 11 600 pop), 76 km (47 miles) from Lares (c. 7 200 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Lares, Añasco, Rincón. Close country/countries that might be effected, Puerto Rico (c. 3 917 000 pop).

There are an estimated 1,300,000 minor quakes in the world each year. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days seven, in the past 30 days twenty-four and in the last 365 days two hundred and seventy-seven earthquakes of magnitude 3.0 or greater that has struck near.

How would you describe the shaking?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 50 km N of Isabela, Puerto Rico. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -67.0595° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.9563° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 34 km Depth of the event in kilometers.
Place 50km 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 2017-12-24 12:55:26 Time when the event occurred. UTC/GMT
Updated 2017-12-24 16:51:50 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 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 5 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.4915 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.1 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 328 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 pr2017358005 Id of event.
Event Code 2017358005 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr2017358005, A comma-separated list of event ids that are associated to an event.

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