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Light earthquake 4.2 mag, 8 km SSW of Ponce, Puerto Rico


Earthquake location 17.937S, -66.6304WA light earthquake magnitude 4.2 (ml/mb) strikes 8 kilometers (5 miles) from Ponce in Puerto Rico on Monday. Exact location of earthquake, -66.6304° West, 17.937° North, depth 10 km. Global date and time of event UTC/GMT: 27/01/20 / 2020-01-27 05:20:39 / January 27, 2020 @ 5:20 am. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event ids that are associated to the earthquake: pt20027002, us60007gz2. Id of event: us60007gz2. The earthquake occurred at a depth of 10 km (6 miles) below the earth’s surface. The 4.2-magnitude earthquake was detected at 01:20:39 / 1:20 am (local time epicenter).

Nearby country/countries, Puerto Rico (c. 3 917 000 pop) (That might be effected). Epicenter of the event was 81 km (50 miles) from San Juan (c. 418 100 pop), 72 km (45 miles) from Bayamón (c. 203 500 pop), 87 km (54 miles) from Carolina (c. 170 400 pop), 8 km (5 miles) from Ponce (c. 152 600 pop), 70 km (43 miles) from Caguas (c. 86 800 pop), 72 km (45 miles) from Guaynabo (c. 81 400 pop). Nearest cities/city/towns to hypocenter/epicentrum was Canovanas, Santa Barbara, Humacao (min 5000 pop).

In the past 24 hours, there have been fourteen, in the last 10 days two hundred and fifty-eight, in the past 30 days eight hundred and seven and in the last 365 days eight hundred and fifty-four earthquakes of magnitude 3.0 or greater that was reported nearby. 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.

How would you describe the shaking?

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 8 km SSW of Ponce, Puerto Rico. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -66.6304° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 17.937° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 8km SSW of Ponce, 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 2020-01-27 05:20:39 Time when the event occurred. UTC/GMT
Updated 2020-01-27 05:32:37 Time when the event was most recently updated. UTC/GMT
Timezone offset -240 Timezone offset from UTC in minutes at the event epicenter.
Felt 36 The total number of felt reports
CDI 4.8 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 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 289 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 ,pt,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 0.056 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 57 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us60007gz2 Id of event.
Event Code 60007gz2 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pt20027002,us60007gz2, A comma-separated list of event ids that are associated to an event.

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