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Minor earthquake 2.84 mag, 50 km NNW of San Antonio, Puerto Rico



Earthquake location 18.893S, -67.325WA minor earthquake magnitude 2.84 (ml/mb) strikes 50 kilometers (31 miles) from San Antonio in Puerto Rico on Friday. Exact time and date of event in UTC/GMT: 18/08/17 / 2017-08-18 09:52:08 / August 18, 2017 @ 9:52 am. The epicenter of the earthquake was roughly 8 km (5 miles) below the earth’s surface. All ids that are associated to the event: pr2017230008. Unique identifier: pr2017230008. Exact location of earthquake, longitude -67.325 West, latitude 18.893 North, depth = 8 km. The temblor was picked up at 05:52:08 / 5:52 am (local time epicenter).

Close country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Closest city/cities/towns to epicentrum/hypocenter was San Sebastián, Añasco, Hatillo (min 5000 pop). The epicenter was 55 km (34 miles) from Aguadilla (c. 16 100 pop), 54 km (33 miles) from Isabela (c. 12 500 pop), 71 km (44 miles) from San Sebastián (c. 11 600 pop), 71 km (44 miles) from Añasco (c. 6 100 pop), 69 km (43 miles) from Hatillo (c. 5 600 pop).

Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. Each year there are an estimated 1,300,000 minor quakes in the world. In the past 24 hours, there have been three, in the last 10 days seven, in the past 30 days twenty and in the last 365 days two hundred and seventy-six earthquakes of magnitude 3.0 or greater that was reported nearby.

Questions or comments?

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. 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: 50 km NNW of San Antonio, Puerto Rico.

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More information

Parameter Value Description
Magnitude 2.84 mb The magnitude for the event.
Longitude -67.325° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.893° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 8 km Depth of the event in kilometers.
Place 50km NNW of San Antonio, 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 2017-08-18 09:52:08 Time when the event occurred. UTC/GMT
Updated 2017-08-18 12:12:27 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 124 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 7 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.4762 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.4 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 297 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 pr2017230008 Id of event.
Event Code 2017230008 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr2017230008, A comma-separated list of event ids that are associated to an event.

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