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Minor World Earthquakes Magnitude -3.9

Minor earthquake: M3.4 quake has struck near Indios in Puerto Rico


Earthquake location 17.8777S, -66.8185WA minor earthquake with magnitude 3.4 (ml/mb) was detected on Thursday, 12 kilometers (7 miles) from Indios in Puerto Rico. Exact location of earthquake, longitude -66.8185 West, latitude 17.8777 North, depth = 10 km. Event id: usa0006c68. Ids that are associated to the earthquake: usa0006c68. The earthquake was roughly at a depth of 10 km (6 miles). The 3.4-magnitude earthquake has occurred at 04:38:40 / 4:38 am (local time epicenter). Exact time and date of event in UTC/GMT: 09/01/20 / 2020-01-09 08:38:40 / January 9, 2020 @ 8:38 am.

Close country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Event epicenter was 26 km (16 miles) from Ponce (c. 152 600 pop), 49 km (31 miles) from Mayagüez (c. 78 600 pop), 67 km (42 miles) from Arecibo (c. 49 300 pop), 78 km (48 miles) from Vega Baja (c. 29 300 pop), 70 km (44 miles) from Barceloneta (c. 22 300 pop). Closest city/cities/towns to epicentrum/hypocenter was San Antonio, Toa Alta, Arroyo (min 5000 pop).

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. In the past 24 hours, there have been seven hundred and thirty, in the last 10 days eight hundred and eighty-seven, in the past 30 days nine hundred and twenty-five and in the last 365 days nine hundred and sixty-four earthquakes of magnitude 3.0 or greater that has occurred nearby. There are an estimated 130,000 minor quakes in the world each year.

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 data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 12 km S of Indios, Puerto Rico.

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More information

Parameter Value Description
Magnitude 3.4 mb The magnitude for the event.
Longitude -66.8185° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 17.8777° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 12km S of Indios, 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 2020-01-09 08:38:40 Time when the event occurred. UTC/GMT
Updated 2020-01-31 09:53:32 Time when the event was most recently updated. UTC/GMT
Timezone offset -240 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 178 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 0.26 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.64 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 217 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 usa0006c68 Id of event.
Event Code a0006c68 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,usa0006c68, A comma-separated list of event ids that are associated to an event.

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