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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.6 quake has struck near Visokoi Island in South Georgia and the South Sandwich Islands

Posted by admin on August 12, 2018 0 Comments

Earthquake location -55.8088S, -30.4703WA light earthquake magnitude 4.6 (ml/mb) has occurred on Saturday, 225 km WNW of Visokoi Island, South Georgia and the South Sandwich Islands (140 miles). All ids that are associated to the event: us2000ge9t. Unique identifier: us2000ge9t. The earthquake was roughly at a depth of 10 km (6 miles). The temblor was picked up at 11:24:43 / 11:24 am (local time epicenter). Exact location of earthquake, -30.4703° West, -55.8088° South, depth 10 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Date and time of earthquake in UTC/GMT: 21/07/18 / 2018-07-21 13:24:43 / July 21, 2018 @ 1:24 pm.

In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days three and in the last 365 days seventeen earthquakes of magnitude 3.0 or greater that has occurred 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 react? Was there any damage to buildings? Leave a comment or report about shaking, activity 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: 225 km WNW of Visokoi Island, South Georgia and the South Sandwich Islands.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude -30.4703° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -55.8088° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 225km WNW 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 2018-07-21 13:24:43 Time when the event occurred. UTC/GMT
Updated 2018-08-12 16:24:05 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 326 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 3.783 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.82 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 199 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 us2000ge9t Id of event.
Event Code 2000ge9t An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000ge9t, A comma-separated list of event ids that are associated to an event.

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