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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.4 quake has struck near Bristol Island in South Sandwich Islands

Posted by admin on September 13, 2018 0 Comments

Earthquake location -59.2678S, -25.0061WA light earthquake magnitude 4.4 (ml/mb) has occurred on Saturday, 90 km ESE of Bristol Island, South Sandwich Islands (56 miles). The epicenter of the earthquake was roughly 10 km (6 miles) below the earth’s surface. Exact location of event, longitude -25.0061 West, latitude -59.2678 South, depth = 10 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.4-magnitude earthquake has occurred at 08:41:33 / 8:41 am (local time epicenter). Unique identifier: us1000ggrl. Ids that are associated to the event: us1000ggrl. Exact time and date of earthquake 18/08/18 / 2018-08-18 10:41:33 / August 18, 2018 @ 10:41 am UTC/GMT.

There are an estimated 13,000 light earthquakes in the world each year. In the past 24 hours, there have been ten, in the last 10 days ten, in the past 30 days eleven and in the last 365 days fourty-five earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel anything?

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 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: 90 km ESE of Bristol Island, South Sandwich Islands.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude -25.0061° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -59.2678° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 90km ESE of Bristol Island, 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 2018-08-18 10:41:33 Time when the event occurred. UTC/GMT
Updated 2018-09-13 12:00:52 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 298 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 18.88 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.62 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 117 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 us1000ggrl Id of event.
Event Code 1000ggrl An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000ggrl, A comma-separated list of event ids that are associated to an event.

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