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Earthquake breaking news, Minor World Earthquakes Magnitude -3.9

Minor earthquake, 3.55 mag has occurred near Luquillo in Puerto Rico

Earthquake location 18.9996S, -65.4121WA minor earthquake with magnitude 3.55 (ml/mb) was detected on Sunday, 76 kilometers (47 miles) from Luquillo in Puerto Rico. The temblor was picked up at 21:34:54 / 9:34 pm (local time epicenter). Exact location of event, longitude -65.4121 West, latitude 18.9996 North, depth = 46 km. Date and time of earthquake in UTC/GMT: 31/01/21 / 2021-01-31 21:34:54 / January 31, 2021 @ 9:34 pm. The epicenter was at a depth of 46 km (29 miles). Event id: pr2021031019. Ids that are associated to the earthquake: us6000ddhn, pr2021031019.

Nearby country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was San Isidro, Río Grande, Loíza. Earthquake epicenter was 79 km (49 miles) from Fajardo (c. 34 100 pop), 82 km (51 miles) from Río Grande (c. 13 500 pop), 77 km (48 miles) from Luquillo (c. 8 300 pop), 84 km (52 miles) from San Isidro (c. 8 100 pop), 80 km (50 miles) from Loíza (c. 4 300 pop), 78 km (49 miles) from Culebra (c. 1 500 pop).

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

Questions or comments?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city 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: 76 km NNE of Luquillo, Puerto Rico.

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More information

Parameter Value Description
Magnitude 3.55 mb The magnitude for the event.
Longitude -65.4121° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.9996° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 46 km Depth of the event in kilometers.
Place 76 km NNE of Luquillo, 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 2021-01-31 21:34:54 Time when the event occurred. UTC/GMT
Updated 2021-01-31 22:04:49 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 194 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 ,us,pr, A comma-separated list of network contributors.
Number of Stations Used 11 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.9132 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.31 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 305 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 pr2021031019 Id of event.
Event Code 2021031019 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000ddhn,pr2021031019, A comma-separated list of event ids that are associated to an event.

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