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Minor earthquake: M2.81 quake has struck near Culebra in Puerto Rico


Earthquake location 18.9413S, -65.2163WA minor earthquake magnitude 2.81 (ml/mb) has occurred on Sunday, 71 kilometers (44 miles) from Culebra in Puerto Rico. All ids that are associated to the event: pr2018273005. Unique identifier: pr2018273005. Exact time and date of earthquake 30/09/18 / 2018-09-30 08:34:25 / September 30, 2018 @ 8:34 am UTC/GMT. The epicenter of the earthquake was roughly 31 km (19 miles) below the earth’s surface. Exact location of event, longitude -65.2163 West, latitude 18.9413 North, depth = 31 km. The 2.81-magnitude earthquake has occurred at 04:34:25 / 4:34 am (local time epicenter).

Nearest cities/city/towns to hypocenter/epicentrum was Charlotte Amalie, Culebra (min 5000 pop). Close country/countries that might be effected, Puerto Rico (c. 3 917 000 pop), U.S. Virgin Islands (c. 109 000 pop). The epicenter was 73 km (45 miles) from Charlotte Amalie (c. 20 000 pop), 72 km (44 miles) from Culebra (c. 1 500 pop).

In the past 24 hours, there have been 0, in the last 10 days eleven, in the past 30 days twenty-nine and in the last 365 days four hundred and thirty-seven earthquakes of magnitude 3.0 or greater that was reported nearby. There are an estimated 1,300,000 minor quakes in the world each year. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage.

Questions or comments?

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, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 71 km N of Culebra, Puerto Rico. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 2.81 mb The magnitude for the event.
Longitude -65.2163° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.9413° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 31 km Depth of the event in kilometers.
Place 71km N of Culebra, 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 2018-09-30 08:34:25 Time when the event occurred. UTC/GMT
Updated 2018-09-30 11:32:16 Time when the event was most recently updated. UTC/GMT
Timezone offset -240 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 121 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 4 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.0192 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.25 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 341 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 pr2018273005 Id of event.
Event Code 2018273005 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr2018273005, A comma-separated list of event ids that are associated to an event.

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