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Minor earthquake: M3.35 quake has struck near San Antonio in Puerto Rico


Earthquake location 19.1091S, -67.2663WA minor earthquake with magnitude 3.35 (ml/mb) was reported 70 kilometers (43 miles) from San Antonio in Puerto Rico on Tuesday. The earthquake occurred at a depth of 7 km (4 miles). The 3.35-magnitude earthquake was detected at 21:44:58 / 9:44 pm (local time epicenter). Unique identifier: pr2021054011. Ids that are associated to the event: pr2021054011. Exact time and date of event in UTC/GMT: 23/02/21 / 2021-02-23 21:44:58 / February 23, 2021 @ 9:44 pm. Exact location of earthquake, -67.2663° West, 19.1091° North, depth 7 km.

Epicenter of the event was 77 km (48 miles) from Aguadilla (c. 16 100 pop), 72 km (45 miles) from Isabela (c. 12 500 pop), 79 km (49 miles) from Quebradillas (c. 5 600 pop), 81 km (50 miles) from Moca (c. 5 000 pop), 82 km (51 miles) from Aguada (c. 4 000 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Aguada, Moca, Quebradillas. Nearby country/countries that might be effected, Puerto Rico (c. 3 917 000 pop).

In the past 24 hours, there have been three, in the last 10 days thirteen, in the past 30 days thirty-six and in the last 365 days four hundred and twenty earthquakes of magnitude 3.0 or greater that has struck near. 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.

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. 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: 70 km NNW of San Antonio, Puerto Rico.

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More information

Parameter Value Description
Magnitude 3.35 mb The magnitude for the event.
Longitude -67.2663° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 19.1091° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 7 km Depth of the event in kilometers.
Place 70 km NNW of San Antonio, 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 2021-02-23 21:44:58 Time when the event occurred. UTC/GMT
Updated 2021-02-23 22:35:57 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 173 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network pr The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,pr, A comma-separated list of network contributors.
Number of Stations Used 16 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.6601 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.46 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 223 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type md The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID pr2021054011 Id of event.
Event Code 2021054011 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr2021054011, A comma-separated list of event ids that are associated to an event.

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