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Light earthquake, 4 mag has occurred near Emajagua in Puerto Rico



Earthquake location 17.808S, -65.616WA light earthquake with magnitude 4 (ml/mb) was detected on Friday, 35 kilometers (22 miles) from Emajagua in Puerto Rico. Exact location of event, depth 2 km, -65.616° West, 17.808° North. The earthquake was roughly at a depth of 2 km (1 miles). The 4-magnitude earthquake has occurred at 10:31:17 / 10:31 am (local time epicenter). Global date and time of event UTC/GMT: 11/11/16 / 2016-11-11 14:31:17 / November 11, 2016 @ 2:31 pm. Event id: at00oghf05. Ids that are associated to the earthquake: at00oghf05. A tsunami warning has been issued near Emajagua in Puerto Rico (Does not indicate if a tsunami actually did or will exist).

Closest city/cities/towns to epicentrum/hypocenter was San Juan, Pájaros, Cataño (min 5000 pop). Epicenter of the earthquake was 90 km (56 miles) from San Juan (c. 418 100 pop), 87 km (54 miles) from Bayamón (c. 203 500 pop), 73 km (45 miles) from Carolina (c. 170 400 pop), 66 km (41 miles) from Caguas (c. 86 800 pop), 80 km (50 miles) from Guaynabo (c. 81 400 pop), 74 km (46 miles) from Trujillo Alto (c. 54 200 pop). Close country/countries that might be effected, Puerto Rico (c. 3 917 000 pop).

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

Did you feel it?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 35 km SE of Emajagua, Puerto Rico.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -65.616° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 17.808° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 2 km Depth of the event in kilometers.
Place 35km 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 14:31:17 Time when the event occurred. UTC/GMT
Updated 2016-11-11 14:44:14 Time when the event was most recently updated. UTC/GMT
Timezone offset -240 Timezone offset from UTC in minutes at the event epicenter.
Felt 2 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 247 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network at The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,at, A comma-separated list of network contributors.
Number of Stations Used 25 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.398852 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.52 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 151.199987904 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 at00oghf05 Id of event.
Event Code 00oghf05 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00oghf05, A comma-separated list of event ids that are associated to an event.

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