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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.6 mag was detected near Hachijo-jima in Japan

Posted by admin on November 6, 2018 0 Comments

Earthquake location 31.7203S, 140.595WA light earthquake magnitude 4.6 (ml/mb) has occurred on Tuesday, 168 km SSE of Hachijo-jima, Japan (104 miles). Date and time of earthquake in UTC/GMT: 30/10/18 / 2018-10-30 13:46:49 / October 30, 2018 @ 1:46 pm. Exact location of event, depth 108.42 km, 140.595° East, 31.7203° North. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake was roughly at a depth of 108.42 km (67 miles). Event ids that are associated to the earthquake: us2000i7ka. Id of event: us2000i7ka. The 4.6-magnitude earthquake has occurred at 22:46:49 / 10:46 pm (local time epicenter).

There are an estimated 13,000 light earthquakes in the world each year. In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days four and in the last 365 days nineteen earthquakes of magnitude 3.0 or greater that has occurred nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel the quake?

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: 168 km SSE of Hachijo-jima, Japan. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude 140.595° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 31.7203° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 108.42 km Depth of the event in kilometers.
Place 168km SSE of Hachijo-jima, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-10-30 13:46:49 Time when the event occurred. UTC/GMT
Updated 2018-11-06 21:32:20 Time when the event was most recently updated. UTC/GMT
Timezone offset 540 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 1.54 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.85 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 78 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 us2000i7ka Id of event.
Event Code 2000i7ka An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000i7ka, A comma-separated list of event ids that are associated to an event.

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