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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.6 mag has occurred near Nishinoomote in Japan


Earthquake location 30.6249S, 131.9807WA light earthquake magnitude 4.6 (ml/mb) has occurred on Wednesday, 94 kilometers (58 miles) from Nishinoomote in Japan. The earthquake occurred at a depth of 10 km (6 miles). The temblor was reported at 23:47:15 / 11:47 pm (local time epicenter). All ids that are associated to the event: us1000c0px. Unique identifier: us1000c0px. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of earthquake 20/12/17 / 2017-12-20 14:47:15 / December 20, 2017 @ 2:47 pm UTC/GMT. Exact location of event, longitude 131.9807 East, latitude 30.6249 North, depth = 10 km.

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Nishinoomote. Close country/countries, Japan (c. 127 288 000 pop) (That might be effected). The epicenter was 95 km (59 miles) from Nishinoomote (c. 17 800 pop).

In the past 24 hours, there have been nine, in the last 10 days thirteen, in the past 30 days thirteen and in the last 365 days twenty-eight earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light quakes in the world.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city 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: 94 km E of Nishinoomote, Japan.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude 131.9807° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 30.6249° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 94km E of Nishinoomote, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-12-20 14:47:15 Time when the event occurred. UTC/GMT
Updated 2018-01-10 13:27:00 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 2.663 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.55 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 103 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 us1000c0px Id of event.
Event Code 1000c0px An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000c0px, A comma-separated list of event ids that are associated to an event.

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