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Minor earthquake: M3.53 quake has struck near Puerto Rico region


Earthquake location 17.9333S, -66.8098WA minor earthquake with magnitude 3.53 (ml/mb) was reported Puerto Rico region kilometers (0 miles) from Puerto Rico region on Monday. The 3.53-magnitude earthquake was detected at 18:58:00 / 6:58 pm (local time epicenter). Exact location, longitude -66.8098° West, latitude 17.9333° North, depth = 8 km. The earthquake occurred at a depth of 8 km (5 miles). All ids that are associated to the event: pr2021004008. Unique identifier: pr2021004008. Global time and date of event 04/01/21 / 2021-01-04 18:58:00 / January 4, 2021 @ 6:58 pm UTC/GMT.

Epicenter of the event was 22 km (14 miles) from Ponce (c. 152 600 pop), 46 km (28 miles) from Mayagüez (c. 78 600 pop), 61 km (38 miles) from Arecibo (c. 49 300 pop), 72 km (45 miles) from Vega Baja (c. 29 300 pop), 64 km (40 miles) from Barceloneta (c. 22 300 pop), 74 km (46 miles) from Guayama (c. 21 600 pop). Close 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 Ingenio, Aguas Buenas, Candelaria Arenas.

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days thirty-six, in the past 30 days one hundred and seven and in the last 365 days two thousand, eight hundred and fourty-six 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.

How would you describe the shaking?

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: Puerto Rico region.

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More information

Parameter Value Description
Magnitude 3.53 mb The magnitude for the event.
Longitude -66.8098° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 17.9333° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 8 km Depth of the event in kilometers.
Place Puerto Rico region Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2021-01-04 18:58:00 Time when the event occurred. UTC/GMT
Updated 2021-01-04 19:22:55 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt 2 The total number of felt reports
CDI 4.9 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 193 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 24 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.081 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.28 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 193 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 pr2021004008 Id of event.
Event Code 2021004008 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr2021004008, A comma-separated list of event ids that are associated to an event.

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