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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.6 mag, Western Indian-Antarctic Ridge

Posted by admin on October 31, 2018 0 Comments

Earthquake location -49.036S, 121.8087WA light earthquake magnitude 4.6 (ml/mb) has occurred on Wednesday, Western Indian-Antarctic Ridge (0 miles). The temblor was reported at 00:13:11 / 12:13 am (local time epicenter). The epicenter of the earthquake was roughly 10 km (6 miles) below the earth’s surface. Date and time of earthquake in UTC/GMT: 23/10/18 / 2018-10-23 16:13:11 / October 23, 2018 @ 4:13 pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event ids that are associated to the earthquake: us2000i1t0. Id of event: us2000i1t0. Exact location of earthquake, longitude 121.8087 East, latitude -49.036 South, depth = 10 km.

Each year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days two and in the last 365 days eight 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.

How would you describe the shaking?

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: Western Indian-Antarctic Ridge.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude 121.8087° East Decimal degrees longitude. Negative values for western longitudes.
Latitude -49.036° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place Western Indian-Antarctic Ridge Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-10-23 16:13:11 Time when the event occurred. UTC/GMT
Updated 2018-10-31 15:50:32 Time when the event was most recently updated. UTC/GMT
Timezone offset 480 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 16.453 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.39 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 99 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 us2000i1t0 Id of event.
Event Code 2000i1t0 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000i1t0, A comma-separated list of event ids that are associated to an event.

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