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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag was detected near Georgetown in Saint Helena

Posted by admin on December 9, 2020 0 Comments

Earthquake location -7.5336S, -13.6843WA light earthquake magnitude 4.5 (ml/mb) has struck on Friday, 91 kilometers (57 miles) from Georgetown in Saint Helena. Global time and date of event 04/12/20 / 2020-12-04 02:53:59 / December 4, 2020 @ 2:53 am UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter was at a depth of 10 km (6 miles). Exact location of earthquake, -13.6843° West, -7.5336° South, depth 10 km. Event id: us7000cp7a. Ids that are associated to the earthquake: us7000cp7a. The temblor was reported at 02:53:59 / 2:53 am (local time epicenter).

Close country/countries that might be effected, Saint Helena (c. 7 000 pop). Event epicenter was 92 km (57 miles) from Georgetown (c. 500 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Georgetown.

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 four earthquakes of magnitude 3.0 or greater that was reported nearby. Each year there are an estimated 13,000 light quakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel anything?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 91 km ENE of Georgetown, Saint Helena. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -13.6843° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -7.5336° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 91 km ENE of Georgetown, Saint Helena Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-12-04 02:53:59 Time when the event occurred. UTC/GMT
Updated 2020-12-09 02:01:20 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 312 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 0.778 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.37 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 94 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 us7000cp7a Id of event.
Event Code 7000cp7a An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000cp7a, A comma-separated list of event ids that are associated to an event.

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