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Major earthquake, 7.3 mag has occurred near South Shetland Islands


Earthquake location -62S, -55.3WA major earthquake magnitude 7.3 (ml/mb) has struck on Saturday, South Shetland Islands (0 miles). The temblor was picked up at 23:36:55 / 11:36 pm (local time epicenter). The epicenter was at a depth of 10 km (6 miles). Event ids that are associated to the earthquake: pt21023003, at00qneuxj. Id of event: at00qneuxj. Exact location of event, depth 10 km, -55.3° West, -62° South. Global time and date of event 23/01/21 / 2021-01-23 23:36:55 / January 23, 2021 @ 11:36 pm UTC/GMT. A tsunami warning has been issued near South Shetland Islands (Does not indicate if a tsunami actually did or will exist).

Earthquakes 7.0 to 7.9 may cause serious damage. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days one and in the last 365 days three earthquakes of magnitude 3.0 or greater that have been detected in the same area. Each year there are an estimated 15 major earthquakes in the world.

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 data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: South Shetland Islands.

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More information

Parameter Value Description
Magnitude 7.3 mb The magnitude for the event.
Longitude -55.3° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -62° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place South Shetland Islands Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2021-01-23 23:36:55 Time when the event occurred. UTC/GMT
Updated 2021-01-23 23:48:17 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 1 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 820 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network at The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,pt,at, A comma-separated list of network contributors.
Number of Stations Used 42 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.449881 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.86 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 68.399994528 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type Mi The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID at00qneuxj Id of event.
Event Code 00qneuxj An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pt21023003,at00qneuxj, A comma-separated list of event ids that are associated to an event.

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