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Minor earthquake, 2.94 mag was detected near Isabela in Puerto Rico



Earthquake location 18.813S, -66.9WA minor earthquake with magnitude 2.94 (ml/mb) was reported 36 kilometers (22 miles) from Isabela in Puerto Rico on Sunday. Exact location of earthquake, longitude -66.9 West, latitude 18.813 North, depth = 71 km. Exact time and date of event in UTC/GMT: 01/10/17 / 2017-10-01 20:45:37 / October 1, 2017 @ 8:45 pm. The earthquake occurred at a depth of 71 km (44 miles) below the earth’s surface. Event id: pr2017274005. Ids that are associated to the earthquake: pr2017274005. The 2.94-magnitude earthquake has occurred at 16:45:37 / 4:45 pm (local time epicenter).

Closest city/cities/towns to epicentrum/hypocenter was Hormigueros, Dorado, Morovis (min 5000 pop). Nearby country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Earthquake epicenter was 73 km (45 miles) from Mayagüez (c. 78 600 pop), 43 km (26 miles) from Arecibo (c. 49 300 pop), 68 km (42 miles) from Vega Baja (c. 29 300 pop), 55 km (34 miles) from Barceloneta (c. 22 300 pop), 75 km (46 miles) from Adjuntas (c. 19 500 pop).

Every year there are an estimated 130,000 minor earthquakes in the world. In the past 24 hours, there have been six, in the last 10 days seven, in the past 30 days nineteen and in the last 365 days two hundred and seventy 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.

Did you feel it?

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. 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: 36 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 -66.9° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.813° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 71 km Depth of the event in kilometers.
Place 36km 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 2017-10-01 20:45:37 Time when the event occurred. UTC/GMT
Updated 2017-10-16 21:58:46 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 4 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.6442 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.3 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 305 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 pr2017274005 Id of event.
Event Code 2017274005 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr2017274005, A comma-separated list of event ids that are associated to an event.

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