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Minor earthquake, 3.11 mag strikes near San Antonio in Puerto Rico


Earthquake location 19.1815S, -67.2318WA minor earthquake with magnitude 3.11 (ml/mb) was detected on Wednesday, 77 kilometers (48 miles) from San Antonio in Puerto Rico. Exact location, longitude -67.2318° West, latitude 19.1815° North, depth = 4 km. The earthquake occurred at a depth of 4 km (2 miles). Unique identifier: pr2021034013. Ids that are associated to the event: pr2021034013. The temblor was reported at 17:12:13 / 5:12 pm (local time epicenter). Exact time and date of event in UTC/GMT: 03/02/21 / 2021-02-03 17:12:13 / February 3, 2021 @ 5:12 pm.

The epicenter was 79 km (49 miles) from Isabela (c. 12 500 pop). Country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Nearest cities/city/villages to epicentrum/hypocenter was Isabela (min 5000 pop).

Every year there are an estimated 130,000 minor earthquakes in the world. In the past 24 hours, there have been two, in the last 10 days nineteen, in the past 30 days thirty and in the last 365 days four hundred and twenty-six 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 anything?

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. 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: 77 km N of San Antonio, Puerto Rico.

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More information

Parameter Value Description
Magnitude 3.11 mb The magnitude for the event.
Longitude -67.2318° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 19.1815° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 4 km Depth of the event in kilometers.
Place 77 km N 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 2021-02-03 17:12:13 Time when the event occurred. UTC/GMT
Updated 2021-02-03 18:05:14 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 149 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 12 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.7241 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 287 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 pr2021034013 Id of event.
Event Code 2021034013 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr2021034013, A comma-separated list of event ids that are associated to an event.

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