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Minor earthquake 2.94 mag, 42 km NNE of Isabela, Puerto Rico


Earthquake location 18.8645S, -66.8928WA minor earthquake magnitude 2.94 (ml/mb) has occurred on Sunday, 42 kilometers (26 miles) from Isabela in Puerto Rico. The temblor was reported at 12:03:31 / 12:03 pm (local time epicenter). The earthquake occurred at a depth of 52 km (32 miles). All ids that are associated to the event: pr2017358007. Unique identifier: pr2017358007. Exact location of event, longitude -66.8928 West, latitude 18.8645 North, depth = 52 km. Date and time of earthquake in UTC/GMT: 24/12/17 / 2017-12-24 16:03:31 / December 24, 2017 @ 4:03 pm.

Earthquake epicenter was 78 km (49 miles) from Mayagüez (c. 78 600 pop), 47 km (29 miles) from Arecibo (c. 49 300 pop), 71 km (44 miles) from Vega Baja (c. 29 300 pop), 59 km (37 miles) from Barceloneta (c. 22 300 pop), 64 km (40 miles) from Manatí (c. 16 100 pop). Closest city/cities/towns to epicentrum/hypocenter was Jayuya, Mayagüez, Vega Alta (min 5000 pop). Close country/countries that might be effected, Puerto Rico (c. 3 917 000 pop).

In the past 24 hours, there have been two, in the last 10 days eight, in the past 30 days thirty-two and in the last 365 days two hundred and seventy-six earthquakes of magnitude 3.0 or greater that have been detected in the same area. Every year there are an estimated 130,000 minor earthquakes in the world. Earthquakes 2.5 to 3.2 are often felt, but only causes minor damage.

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. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 42 km NNE of Isabela, Puerto Rico.

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More information

Parameter Value Description
Magnitude 2.94 mb The magnitude for the event.
Longitude -66.8928° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.8645° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 52 km Depth of the event in kilometers.
Place 42km NNE 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 16:03:31 Time when the event occurred. UTC/GMT
Updated 2017-12-24 21:04:56 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 133 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 8 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.4531 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.16 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 292 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 pr2017358007 Id of event.
Event Code 2017358007 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr2017358007, A comma-separated list of event ids that are associated to an event.

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