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Minor earthquake 3.12 mag, 21 km NNE of Charlotte Amalie, U.S. Virgin Islands


Earthquake location 18.5285S, -64.8755WA minor earthquake with magnitude 3.12 (ml/mb) was detected on Friday, 21 kilometers (13 miles) from Charlotte Amalie in U.S. Virgin Islands. Global date and time of event UTC/GMT: 09/06/18 / 2018-06-09 02:43:44 / June 9, 2018 @ 2:43 am. The temblor was picked up at 22:43:44 / 10:43 pm (local time epicenter). The epicenter of the earthquake was roughly 99 km (62 miles) below the earth’s surface. Unique identifier: pr2018160002. Ids that are associated to the event: pr2018160002. Exact location of event, longitude -64.8755 West, latitude 18.5285 North, depth = 99 km.

Country/countries that might be effected, Puerto Rico (c. 3 917 000 pop), British Virgin Islands (c. 22 000 pop), U.S. Virgin Islands (c. 109 000 pop). The epicenter was 30 km (19 miles) from Tortola (c. 23 900 pop), 22 km (13 miles) from Charlotte Amalie (c. 20 000 pop), 73 km (46 miles) from Isabel Segunda (c. 9 300 pop), 29 km (18 miles) from Road Town (c. 8 400 pop), 24 km (15 miles) from Cruz Bay (c. 2 700 pop). Nearest cities/city/towns to hypocenter/epicentrum was Isabel Segunda, Culebra, Tortola (min 5000 pop).

Earthquakes 2.5 to 3.2 are often felt, but only causes minor damage. In the past 24 hours, there have been two, in the last 10 days fifteen, in the past 30 days thirty-seven and in the last 365 days three hundred and fourty-seven earthquakes of magnitude 3.0 or greater that has occurred nearby. There are an estimated 130,000 minor earthquakes in the world each year.

Questions or comments?

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: 21 km NNE of Charlotte Amalie, U.S. Virgin Islands.

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More information

Parameter Value Description
Magnitude 3.12 mb The magnitude for the event.
Longitude -64.8755° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.5285° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 99 km Depth of the event in kilometers.
Place 21km NNE of Charlotte Amalie, U.S. Virgin Islands Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-06-09 02:43:44 Time when the event occurred. UTC/GMT
Updated 2018-06-09 06:08:14 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 150 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 15 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.0472 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.37 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 336 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 pr2018160002 Id of event.
Event Code 2018160002 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr2018160002, A comma-separated list of event ids that are associated to an event.

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