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Light earthquake: M4 quake has struck near Emajagua in Puerto Rico



Earthquake location 17.9216S, -65.609WA light earthquake with magnitude 4 (ml/mb) was reported 36 kilometers (22 miles) from Emajagua in Puerto Rico on Friday. A tsunami warning has been issued near Emajagua in Puerto Rico (Does not indicate if a tsunami actually did or will exist). The 4-magnitude earthquake was detected at 10:31:18 / 10:31 am (local time epicenter). Event id: pr16316004. Ids that are associated to the earthquake: us100076wa, pr16316004, at00oghf05. The epicenter was at a depth of 5 km (3 miles). Exact location of event, longitude -65.609 West, latitude 17.9216 North, depth = 5 km. Exact time and date of earthquake 11/11/16 / 2016-11-11 14:31:18 / November 11, 2016 @ 2:31 pm UTC/GMT.

Epicenter of the earthquake was 80 km (50 miles) from San Juan (c. 418 100 pop), 78 km (49 miles) from Bayamón (c. 203 500 pop), 63 km (39 miles) from Carolina (c. 170 400 pop), 58 km (36 miles) from Caguas (c. 86 800 pop), 72 km (45 miles) from Guaynabo (c. 81 400 pop), 64 km (40 miles) from Trujillo Alto (c. 54 200 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Toa Baja, Orocovis, Corozal. 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. Every year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been three, in the last 10 days four, in the past 30 days thirteen and in the last 365 days ninety-five earthquakes of magnitude 3.0 or greater that has struck near.

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 36 km SE of Emajagua, Puerto Rico. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -65.609° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 17.9216° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 5 km Depth of the event in kilometers.
Place 36km SE of Emajagua, 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 2016-11-11 14:31:18 Time when the event occurred. UTC/GMT
Updated 2016-11-11 15:29:17 Time when the event was most recently updated. UTC/GMT
Timezone offset -240 Timezone offset from UTC in minutes at the event epicenter.
Felt 4 The total number of felt reports
CDI 3.8 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 1 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 248 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 ,us,pr,at, A comma-separated list of network contributors.
Number of Stations Used 17 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.31620698 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.56 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 169.2 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 pr16316004 Id of event.
Event Code 16316004 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us100076wa,pr16316004,at00oghf05, A comma-separated list of event ids that are associated to an event.

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