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


Earthquake location 17.9116S, -66.9352WA light earthquake magnitude 4 (ml/mb) has occurred on Tuesday, 7 kilometers (4 miles) from Guanica in Puerto Rico. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 10/03/20 / 2020-03-10 05:29:51 / March 10, 2020 @ 5:29 am. The 4-magnitude earthquake has occurred at 01:29:51 / 1:29 am (local time epicenter). Id of earthquake: us60008d0x. Event ids that are associated: us60008d0x. Exact location of earthquake, longitude -66.9352 West, latitude 17.9116 North, depth = 18.3 km. The earthquake occurred at a depth of 18.3 km (11 miles) below the earth’s surface.

Close country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Nearest cities/city/villages to epicentrum/hypocenter was Toa Alta, San Antonio, Guayama (min 5000 pop). Epicenter of the event was 36 km (22 miles) from Ponce (c. 152 600 pop), 39 km (24 miles) from Mayagüez (c. 78 600 pop), 67 km (41 miles) from Arecibo (c. 49 300 pop), 83 km (51 miles) from Vega Baja (c. 29 300 pop), 73 km (45 miles) from Barceloneta (c. 22 300 pop), 87 km (54 miles) from Guayama (c. 21 600 pop).

Every year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been thirteen, in the last 10 days seventy-six, in the past 30 days two hundred and ninety and in the last 365 days one thousand, five hundred and fourty-five 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.

Did you feel anything?

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, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 7 km SSW of Guanica, Puerto Rico. This data 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 -66.9352° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 17.9116° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 18.3 km Depth of the event in kilometers.
Place 7km SSW of Guanica, 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 2020-03-10 05:29:51 Time when the event occurred. UTC/GMT
Updated 2020-03-10 05:55:32 Time when the event was most recently updated. UTC/GMT
Timezone offset -240 Timezone offset from UTC in minutes at the event epicenter.
Felt 1 The total number of felt reports
CDI 4.5 The maximum reported intensity for the event.
MMI 3.291 The maximum estimated instrumental intensity for the event.
Alert Level green 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 247 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 0.118 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.28 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 171 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 us60008d0x Id of event.
Event Code 60008d0x An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us60008d0x, A comma-separated list of event ids that are associated to an event.

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