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Minor earthquake, 3.1 mag strikes near Guánica in Puerto Rico


Earthquake location 17.9084S, -66.9691WA minor earthquake with magnitude 3.1 (ml/mb) was reported 9 kilometers (6 miles) from Guánica in Puerto Rico on Friday. Unique identifier: us7000ahml. Ids that are associated to the event: us7000ahml. The epicenter of the earthquake was roughly 13.18 km (8 miles) below the earth’s surface. The temblor was picked up at 23:26:24 / 11:26 pm (local time epicenter). Exact location, longitude -66.9691° West, latitude 17.9084° North, depth = 13.18 km. Exact time and date of event in UTC/GMT: 03/07/20 / 2020-07-03 23:26:24 / July 3, 2020 @ 11:26 pm.

Nearby country/countries, Puerto Rico (c. 3 917 000 pop) (That might be effected). Earthquake epicenter was 39 km (24 miles) from Ponce (c. 152 600 pop), 37 km (23 miles) from Mayagüez (c. 78 600 pop), 68 km (42 miles) from Arecibo (c. 49 300 pop), 76 km (47 miles) from Barceloneta (c. 22 300 pop), 19 km (12 miles) from Yauco (c. 20 300 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Aibonito, Manatí, Barranquitas.

In the past 24 hours, there have been twenty-six, in the last 10 days one hundred and twenty-two, in the past 30 days two hundred and sixteen and in the last 365 days two thousand, three hundred and fifty-six earthquakes of magnitude 3.0 or greater that have been detected nearby. Every year there are an estimated 130,000 minor earthquakes in the world. Earthquakes 2.5 to 3.2 are often felt, but only causes minor damage.

How would you describe the shaking?

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. 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: 9 km SW of Guánica, Puerto Rico.

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More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude -66.9691° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 17.9084° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 13.18 km Depth of the event in kilometers.
Place 9 km SW of Guánica, 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 2020-07-03 23:26:24 Time when the event occurred. UTC/GMT
Updated 2020-07-03 23:34:46 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 148 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,us, A comma-separated list of network contributors.
Number of Stations Used The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.093 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.42 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 196 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 us7000ahml Id of event.
Event Code 7000ahml An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000ahml, A comma-separated list of event ids that are associated to an event.

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