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Minor World Earthquakes Magnitude -3.9

Minor earthquake, 3.21 mag has occurred near Capitanejo in Puerto Rico

Earthquake location 17.9538S, -66.5701WA minor earthquake magnitude 3.21 (ml/mb) has occurred on Monday, 7 kilometers (4 miles) from Capitanejo in Puerto Rico. Unique identifier: pr2020244009. Ids that are associated to the event: pr2020244009. The epicenter was at a depth of 3 km (2 miles). The 3.21-magnitude earthquake has occurred at 22:17:31 / 10:17 pm (local time epicenter). Global time and date of event 31/08/20 / 2020-08-31 22:17:31 / August 31, 2020 @ 10:17 pm UTC/GMT. Exact location, longitude -66.5701° West, latitude 17.9538° North, depth = 3 km.

The epicenter was 75 km (47 miles) from San Juan (c. 418 100 pop), 66 km (41 miles) from Bayamón (c. 203 500 pop), 80 km (50 miles) from Carolina (c. 170 400 pop), 8 km (5 miles) from Ponce (c. 152 600 pop), 63 km (39 miles) from Caguas (c. 86 800 pop). Country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Carolina, Las Piedras, Isabela.

Every year there are an estimated 130,000 minor earthquakes in the world. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. In the past 24 hours, there have been twenty, in the last 10 days thirty-eight, in the past 30 days one hundred and three and in the last 365 days two thousand, six hundred and seventeen earthquakes of magnitude 3.0 or greater that have been detected in the same area.

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 7 km SSW of Capitanejo, Puerto Rico. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 3.21 mb The magnitude for the event.
Longitude -66.5701° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 17.9538° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 3 km Depth of the event in kilometers.
Place 7 km SSW of Capitanejo, 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 2020-08-31 22:17:31 Time when the event occurred. UTC/GMT
Updated 2020-09-01 03:29:15 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt 4 The total number of felt reports
CDI 2 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 159 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 21 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.1214 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.34 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 185 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 pr2020244009 Id of event.
Event Code 2020244009 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr2020244009, A comma-separated list of event ids that are associated to an event.

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