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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.3 mag was detected near Visokoi Island in South Georgia and the South Sandwich Islands

Earthquake location -55.9689S, -27.5247WA light earthquake magnitude 4.3 (ml/mb) has occurred on Thursday, 83 km NNW of Visokoi Island, South Georgia and the South Sandwich Islands (52 miles). Exact location of event, depth 99.86 km, -27.5247° West, -55.9689° South. The temblor was detected at 16:42:38 / 4:42 pm (local time epicenter). Exact time and date of earthquake 27/09/18 / 2018-09-27 18:42:38 / September 27, 2018 @ 6:42 pm UTC/GMT. The earthquake occurred at a depth of 99.86 km (62 miles) below the earth’s surface. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event id: us1000h6ef. Ids that are associated to the earthquake: us1000h6ef.

In the past 24 hours, there have been three, in the last 10 days five, in the past 30 days ten and in the last 365 days seventy earthquakes of magnitude 3.0 or greater that have been detected nearby. There are an estimated 13,000 light earthquakes in the world each year. Earthquakes 4.0 to 5.0 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. 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: 83 km NNW of Visokoi Island, South Georgia and the South Sandwich Islands.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude -27.5247° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -55.9689° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 99.86 km Depth of the event in kilometers.
Place 83km NNW 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 2018-09-27 18:42:38 Time when the event occurred. UTC/GMT
Updated 2018-10-16 20:31:59 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 284 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 5.413 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.71 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 95 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 us1000h6ef Id of event.
Event Code 1000h6ef An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000h6ef, A comma-separated list of event ids that are associated to an event.

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