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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.2 quake has struck near Visokoi Island in South Georgia and the South Sandwich Islands

Posted by admin on September 21, 2017 0 Comments

Earthquake location -56.1564S, -27.8765WA light earthquake with magnitude 4.2 (ml/mb) was detected on Wednesday, 73 km NW of Visokoi Island, South Georgia and the South Sandwich Islands (45 miles). The earthquake occurred at a depth of 117.9 km (73 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of event in UTC/GMT: 06/09/17 / 2017-09-06 16:21:52 / September 6, 2017 @ 4:21 pm. Event id: us2000aru8. Ids that are associated to the earthquake: us2000aru8. The 4.2-magnitude earthquake was detected at 14:21:52 / 2:21 pm (local time epicenter). Exact location of event, longitude -27.8765 West, latitude -56.1564 South, depth = 117.9 km.

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Every year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days seven and in the last 365 days fifty-one earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Did you feel it?

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. 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: 73 km NW of Visokoi Island, South Georgia and the South Sandwich Islands.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -27.8765° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -56.1564° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 117.9 km Depth of the event in kilometers.
Place 73km NW of Visokoi Island, South Georgia and the South Sandwich Islands Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-09-06 16:21:52 Time when the event occurred. UTC/GMT
Updated 2017-09-21 04:02:29 Time when the event was most recently updated. UTC/GMT
Timezone offset -120 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 271 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,us, A comma-separated list of network contributors.
Number of Stations Used The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 5.275 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.45 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 103 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us2000aru8 Id of event.
Event Code 2000aru8 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000aru8, A comma-separated list of event ids that are associated to an event.

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