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Minor earthquake: M3.5 quake has struck near Maria Antonia in Puerto Rico


Earthquake location 17.925S, -66.8488WA minor earthquake magnitude 3.5 (ml/mb) strikes 7 kilometers (4 miles) from Maria Antonia in Puerto Rico on Thursday. Exact location of event, depth 11 km, -66.8488° West, 17.925° North. All ids that are associated to the event: us6000d2e8, pr2020359007. Unique identifier: pr2020359007. The temblor was picked up at 03:57:48 / 3:57 am (local time epicenter). Exact time and date of earthquake 24/12/20 / 2020-12-24 03:57:48 / December 24, 2020 @ 3:57 am UTC/GMT. The epicenter of the earthquake was roughly 11 km (7 miles) below the earth’s surface.

Epicenter of the event was 27 km (17 miles) from Ponce (c. 152 600 pop), 43 km (27 miles) from Mayagüez (c. 78 600 pop), 62 km (39 miles) from Arecibo (c. 49 300 pop), 76 km (47 miles) from Vega Baja (c. 29 300 pop), 67 km (42 miles) from Barceloneta (c. 22 300 pop), 78 km (48 miles) from Guayama (c. 21 600 pop). Close country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Closest city/cities/towns to epicentrum/hypocenter was Arroyo, Pájaros, San Antonio (min 5000 pop).

Each year there are an estimated 130,000 minor earthquakes in the world. In the past 24 hours, there have been five, in the last 10 days twenty-four, in the past 30 days fourty-nine and in the last 365 days two thousand, eight hundred and thirty-six earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage.

Did you feel it?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 7 km SE of Maria Antonia, Puerto Rico. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 3.5 mb The magnitude for the event.
Longitude -66.8488° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 17.925° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 11 km Depth of the event in kilometers.
Place 7 km SE of Maria Antonia, 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 2020-12-24 03:57:48 Time when the event occurred. UTC/GMT
Updated 2020-12-24 04:26:13 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt 1 The total number of felt reports
CDI 2.7 The maximum reported intensity for the event.
MMI 2.584 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 189 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 ,us,pr, A comma-separated list of network contributors.
Number of Stations Used 17 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.2004 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.08 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 212 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID pr2020359007 Id of event.
Event Code 2020359007 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000d2e8,pr2020359007, A comma-separated list of event ids that are associated to an event.

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