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Minor World Earthquakes Magnitude -3.9

Minor earthquake: M3.57 quake has struck near Cruz Bay in U.S. Virgin Islands

Earthquake location 18.0333S, -64.7961WA minor earthquake magnitude 3.57 (ml/mb) strikes 32 kilometers (20 miles) from Cruz Bay in U.S. Virgin Islands on Friday. Id of earthquake: pr2020213008. Event ids that are associated: pr2020213008. Exact location of event, longitude -64.7961 West, latitude 18.0333 North, depth = 29 km. The temblor was detected at 03:24:38 / 3:24 am (local time epicenter). Global time and date of event 31/07/20 / 2020-07-31 03:24:38 / July 31, 2020 @ 3:24 am UTC/GMT. The earthquake was roughly at a depth of 29 km (18 miles).

Nearby 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). Nearest cities/city/towns to hypocenter/epicentrum was Isabel Segunda, Culebra, Tortola (min 5000 pop). Epicenter of the earthquake was 34 km (21 miles) from Saint Croix (c. 50 600 pop), 49 km (31 miles) from Tortola (c. 23 900 pop), 37 km (23 miles) from Charlotte Amalie (c. 20 000 pop), 70 km (43 miles) from Isabel Segunda (c. 9 300 pop), 48 km (30 miles) from Road Town (c. 8 400 pop), 33 km (21 miles) from Cruz Bay (c. 2 700 pop).

Each year there are an estimated 130,000 minor earthquakes in the world. In the past 24 hours, there have been three, in the last 10 days five, in the past 30 days eleven and in the last 365 days ninety-nine earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage.

How would you describe the shaking?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 32 km S of Cruz Bay, U.S. Virgin Islands. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 3.57 mb The magnitude for the event.
Longitude -64.7961° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.0333° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 29 km Depth of the event in kilometers.
Place 32 km S of Cruz Bay, 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 2020-07-31 03:24:38 Time when the event occurred. UTC/GMT
Updated 2020-08-16 16:29:32 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 196 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 22 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.0583 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.39 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 343 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 pr2020213008 Id of event.
Event Code 2020213008 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr2020213008, A comma-separated list of event ids that are associated to an event.

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