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Minor earthquake, 3 mag has occurred near Isabela in Puerto Rico



Earthquake location 19.0971S, -66.933WA minor earthquake with magnitude 3 (ml/mb) was detected on Thursday, 66 kilometers (41 miles) from Isabela in Puerto Rico. Exact location of event, longitude -66.933 West, latitude 19.0971 North, depth = 10 km. The 3-magnitude earthquake has occurred at 17:38:11 / 5:38 pm (local time epicenter). Exact time and date of event in UTC/GMT: 03/08/17 / 2017-08-03 21:38:11 / August 3, 2017 @ 9:38 pm. The epicenter of the earthquake was roughly 10 km (6 miles) below the earth’s surface. Event ids that are associated to the earthquake: pr2017215002. Id of event: pr2017215002.

Epicenter of the earthquake was 73 km (45 miles) from Arecibo (c. 49 300 pop), 78 km (48 miles) from Aguadilla (c. 16 100 pop), 67 km (42 miles) from Isabela (c. 12 500 pop), 69 km (43 miles) from Hatillo (c. 5 600 pop), 69 km (43 miles) from Quebradillas (c. 5 600 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Aguadilla, Arecibo, Quebradillas. Close country/countries that might be effected, Puerto Rico (c. 3 917 000 pop).

In the past 24 hours, there have been one, in the last 10 days nine, in the past 30 days thirty-six and in the last 365 days two hundred and fifty-two earthquakes of magnitude 3.0 or greater that have been detected in the same area. There are an estimated 130,000 minor quakes in the world each year. Earthquakes 2.5 to 3.2 are often felt, but only causes minor damage.

Did you feel the quake?

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. 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: 66 km N of Isabela, Puerto Rico.

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More information

Parameter Value Description
Magnitude 3 mb The magnitude for the event.
Longitude -66.933° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 19.0971° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 66km N of Isabela, 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 2017-08-03 21:38:11 Time when the event occurred. UTC/GMT
Updated 2017-08-03 22:18:49 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 138 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 18 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.6543 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.3 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 222 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 pr2017215002 Id of event.
Event Code 2017215002 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr2017215002, A comma-separated list of event ids that are associated to an event.

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