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Minor earthquake: M3.3 quake has struck near Guánica in Puerto Rico


Earthquake location 17.8665S, -66.8908WA minor earthquake magnitude 3.3 (ml/mb) has struck on Friday, 11 kilometers (7 miles) from Guánica in Puerto Rico. Global time and date of event 08/01/21 / 2021-01-08 03:57:03 / January 8, 2021 @ 3:57 am UTC/GMT. Exact location, longitude -66.8908° West, latitude 17.8665° North, depth = 10 km. The earthquake occurred at a depth of 10 km (6 miles) below the earth’s surface. Event ids that are associated to the earthquake: us6000d6mn. Id of event: us6000d6mn. The temblor was picked up at 03:57:03 / 3:57 am (local time epicenter).

Closest city/cities/towns to epicentrum/hypocenter was Cayey, Comerío, Corozal (min 5000 pop). Event epicenter was 33 km (21 miles) from Ponce (c. 152 600 pop), 46 km (28 miles) from Mayagüez (c. 78 600 pop), 70 km (43 miles) from Arecibo (c. 49 300 pop), 75 km (47 miles) from Barceloneta (c. 22 300 pop), 19 km (12 miles) from Yauco (c. 20 300 pop). Nearby country/countries that might be effected, Puerto Rico (c. 3 917 000 pop).

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. There are an estimated 130,000 minor quakes in the world each year. In the past 24 hours, there have been three, in the last 10 days thirty-four, in the past 30 days one hundred and twelve and in the last 365 days two thousand, six hundred and thirty-nine earthquakes of magnitude 3.0 or greater that has occurred nearby.

Did you feel it?

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. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 11 km S of Guánica, Puerto Rico.

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More information

Parameter Value Description
Magnitude 3.3 mb The magnitude for the event.
Longitude -66.8908° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 17.8665° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 11 km S of Guánica, 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 2021-01-08 03:57:03 Time when the event occurred. UTC/GMT
Updated 2021-01-08 04:21:28 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt The total number of felt reports
CDI 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 168 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 0.178 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.65 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 215 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 us6000d6mn Id of event.
Event Code 6000d6mn An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000d6mn, A comma-separated list of event ids that are associated to an event.

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