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Minor earthquake: M3 quake has struck near San Juan in Puerto Rico


Earthquake location 19.079S, -65.9982WA minor earthquake magnitude 3 (ml/mb) has struck on Thursday, 68 kilometers (42 miles) from San Juan in Puerto Rico. The temblor was detected at 03:50:50 / 3:50 am (local time epicenter). The earthquake was roughly at a depth of 50 km (31 miles). Date and time of earthquake in UTC/GMT: 30/07/15 / 2015-07-30 07:50:50 / July 30, 2015 @ 7:50 am. Id of earthquake: pr15211018. Event ids that are associated: pr15211018. Exact location, longitude -65.9982° West, latitude 19.079° North, depth = 50 km.

Epicenter of the event was 69 km (43 miles) from San Juan (c. 418 100 pop), 77 km (48 miles) from Bayamón (c. 203 500 pop), 78 km (48 miles) from Carolina (c. 170 400 pop), 73 km (45 miles) from Levittown (c. 29 800 pop), 72 km (45 miles) from Cataño (c. 28 100 pop). Closest city/cities/towns to epicentrum/hypocenter was Candelaria, Carolina, Bayamón (min 5000 pop). Nearby country/countries, Puerto Rico (c. 3 917 000 pop) (That might be effected).

In the past 24 hours, there have been twenty-two, in the last 10 days fifty-six, in the past 30 days eighty-five and in the last 365 days three hundred and sixty-eight earthquakes of magnitude 3.0 or greater that have been detected in the same area. 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.

Did you feel anything?

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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 68 km N of San Juan, Puerto Rico.

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More information

Parameter Value Description
Magnitude 3 mb The magnitude for the event.
Longitude -65.9982° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 19.079° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 50 km Depth of the event in kilometers.
Place 68km N of San Juan, 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 2015-07-30 07:50:50 Time when the event occurred. UTC/GMT
Updated 2015-07-30 12:50:05 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 14 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.76895788 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.23 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 234 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 pr15211018 Id of event.
Event Code 15211018 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr15211018, A comma-separated list of event ids that are associated to an event.

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