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Minor earthquake 3.1 mag, 22 km N of Arecibo, Puerto Rico



Earthquake location 18.678S, -66.7025WA minor earthquake with magnitude 3.1 (ml/mb) was reported 22 kilometers (14 miles) from Arecibo in Puerto Rico on Sunday. Exact time and date of earthquake 01/04/18 / 2018-04-01 22:44:41 / April 1, 2018 @ 10:44 pm UTC/GMT. Exact location, longitude -66.7025° West, latitude 18.678° North, depth = 22 km. Event id: pr2018091005. Ids that are associated to the earthquake: pr2018091005. The earthquake occurred at a depth of 22 km (14 miles) below the earth’s surface. The temblor was reported at 18:44:41 / 6:44 pm (local time epicenter).

Nearest cities/city/villages to epicentrum/hypocenter was Cidra, Lajas, Aguas Buenas (min 5000 pop). Country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Earthquake epicenter was 67 km (42 miles) from San Juan (c. 418 100 pop), 65 km (41 miles) from Bayamón (c. 203 500 pop), 75 km (46 miles) from Ponce (c. 152 600 pop), 72 km (45 miles) from Guaynabo (c. 81 400 pop), 70 km (44 miles) from Mayagüez (c. 78 600 pop).

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

Questions or comments?

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: 22 km N of Arecibo, Puerto Rico.

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More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude -66.7025° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.678° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 22 km Depth of the event in kilometers.
Place 22km N of Arecibo, 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 2018-04-01 22:44:41 Time when the event occurred. UTC/GMT
Updated 2018-04-01 23:18:46 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 148 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 14 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.2651 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.2 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 232 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 pr2018091005 Id of event.
Event Code 2018091005 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr2018091005, A comma-separated list of event ids that are associated to an event.

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