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Light earthquake: M4.1 quake has struck near Tallaboa in Puerto Rico


Earthquake location 17.923S, -66.7587WA light earthquake magnitude 4.1 (ml/mb) strikes 9 kilometers (6 miles) from Tallaboa in Puerto Rico on Saturday. Global time and date of event 19/01/20 / 2020-01-19 03:06:59 / January 19, 2020 @ 3:06 am UTC/GMT. The earthquake occurred at a depth of 5 km (3 miles) below the earth’s surface. All ids that are associated to the event: us60007af1. Unique identifier: us60007af1. Exact location of event, longitude -66.7587 West, latitude 17.923 North, depth = 5 km. The temblor was picked up at 23:06:59 / 11:06 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Nearest cities/city/towns to hypocenter/epicentrum was San Juan, Maunabo, Gurabo (min 5000 pop). The epicenter was 92 km (57 miles) from San Juan (c. 418 100 pop), 83 km (51 miles) from Bayamón (c. 203 500 pop), 18 km (11 miles) from Ponce (c. 152 600 pop), 83 km (51 miles) from Caguas (c. 86 800 pop), 84 km (52 miles) from Guaynabo (c. 81 400 pop), 51 km (32 miles) from Mayagüez (c. 78 600 pop). Nearby country/countries that might be effected, Puerto Rico (c. 3 917 000 pop).

In the past 24 hours, there have been twenty-nine, in the last 10 days three hundred and eighty-nine, in the past 30 days five hundred and ninety-two and in the last 365 days six hundred and thirty-eight earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light earthquakes in the world.

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. 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: 9 km SSW of Tallaboa, Puerto Rico.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -66.7587° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 17.923° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 5 km Depth of the event in kilometers.
Place 9km SSW of Tallaboa, 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 2020-01-19 03:06:59 Time when the event occurred. UTC/GMT
Updated 2020-01-19 03:17:30 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 5.3 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 261 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,us, A comma-separated list of network contributors.
Number of Stations Used The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.09 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.81 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 202 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 us60007af1 Id of event.
Event Code 60007af1 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us60007af1, A comma-separated list of event ids that are associated to an event.

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