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Light earthquake: M4.6 quake has struck near Brenas in Puerto Rico

Posted by admin on December 9, 2018 0 Comments

Earthquake location 18.814S, -66.363WA light earthquake magnitude 4.6 (ml/mb) strikes 38 kilometers (24 miles) from Brenas in Puerto Rico on Sunday. The epicenter was at a depth of 36.6 km (23 miles). Exact location of earthquake, -66.363° West, 18.814° North, depth 36.6 km. Global time and date of event 09/12/18 / 2018-12-09 23:00:37 / December 9, 2018 @ 11:00 pm UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Id of earthquake: pt18343050. Event ids that are associated: pt18343050. The 4.6-magnitude earthquake has occurred at 19:00:37 / 7:00 pm (local time epicenter).

Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Ceiba, Patillas, Punta Santiago. Event epicenter was 47 km (29 miles) from San Juan (c. 418 100 pop), 51 km (32 miles) from Bayamón (c. 203 500 pop), 64 km (40 miles) from Carolina (c. 170 400 pop), 93 km (58 miles) from Ponce (c. 152 600 pop), 73 km (45 miles) from Caguas (c. 86 800 pop), 57 km (36 miles) from Guaynabo (c. 81 400 pop), 63 km (39 miles) from Trujillo Alto (c. 54 200 pop). Nearby country/countries, Puerto Rico (c. 3 917 000 pop) (That might be effected).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days eight, in the past 30 days seventeen and in the last 365 days two hundred and thirty-four earthquakes of magnitude 3.0 or greater that have been detected in the same area. There are an estimated 13,000 light quakes in the world each year.

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: 38 km N of Brenas, Puerto Rico.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude -66.363° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.814° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 36.6 km Depth of the event in kilometers.
Place 38km N of Brenas, 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 2018-12-09 23:00:37 Time when the event occurred. UTC/GMT
Updated 2018-12-09 23:14:01 Time when the event was most recently updated. UTC/GMT
Timezone offset -240 Timezone offset from UTC in minutes at the event epicenter.
Felt 12 The total number of felt reports
CDI 4.1 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 330 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network pt The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,pt, A comma-separated list of network contributors.
Number of Stations Used 19 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 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 pt18343050 Id of event.
Event Code 18343050 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pt18343050, A comma-separated list of event ids that are associated to an event.

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