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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.8 quake has struck near Southwest Indian Ridge


Earthquake location -31.8001S, 58.2961WA light earthquake magnitude 4.8 (ml/mb) has struck on Saturday, Southwest Indian Ridge (0 miles). The 4.8-magnitude earthquake was detected at 03:45:57 / 3:45 am (local time epicenter). Global date and time of event UTC/GMT: 13/07/18 / 2018-07-13 23:45:57 / July 13, 2018 @ 11:45 pm. Exact location of earthquake, longitude 58.2961 East, latitude -31.8001 South, depth = 10 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Unique identifier: us2000g8ku. Ids that are associated to the event: us2000g8ku. The epicenter of the earthquake was roughly 10 km (6 miles) below the earth’s surface.

Each year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been one, in the last 10 days fourty-two, in the past 30 days fourty-two and in the last 365 days fourty-four 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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: Southwest Indian Ridge. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.8 mb The magnitude for the event.
Longitude 58.2961° East Decimal degrees longitude. Negative values for western longitudes.
Latitude -31.8001° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place Southwest Indian Ridge Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-07-13 23:45:57 Time when the event occurred. UTC/GMT
Updated 2018-07-24 03:57:12 Time when the event was most recently updated. UTC/GMT
Timezone offset 240 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 354 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 10.829 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.9 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 67 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 us2000g8ku Id of event.
Event Code 2000g8ku An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000g8ku, A comma-separated list of event ids that are associated to an event.

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