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Light earthquake, 4.6 mag was detected near Tsukumi in Japan


Earthquake location 33.1217S, 132.1708WA light earthquake with magnitude 4.6 (ml/mb) was reported 29 kilometers (18 miles) from Tsukumi in Japan on Monday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter of the earthquake was roughly 23.13 km (14 miles) below the earth’s surface. Exact time and date of earthquake 04/12/17 / 2017-12-04 07:54:14 / December 4, 2017 @ 7:54 am UTC/GMT. The temblor was reported at 16:54:14 / 4:54 pm (local time epicenter). Unique identifier: us1000bkuf. Ids that are associated to the event: us1000bkuf. Exact location of event, longitude 132.1708 East, latitude 33.1217 North, depth = 23.13 km.

Earthquake epicenter was 54 km (33 miles) from Ōita (c. 448 900 pop), 97 km (60 miles) from Matsuyama (c. 443 300 pop), 65 km (40 miles) from Beppu (c. 125 100 pop), 76 km (47 miles) from Nobeoka (c. 121 900 pop), 47 km (29 miles) from Tsurusaki (c. 77 000 pop), 38 km (24 miles) from Uwajima (c. 59 000 pop), 32 km (20 miles) from Saiki (c. 49 100 pop). Nearby country/countries that might be effected, Japan (c. 127 288 000 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Matsuyama, Tsukawaki, Hikari.

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days one and in the last 365 days six earthquakes of magnitude 3.0 or greater that has struck near. Every year there are an estimated 13,000 light earthquakes in the world.

Did you feel the quake?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 29 km E of Tsukumi, Japan.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude 132.1708° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 33.1217° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 23.13 km Depth of the event in kilometers.
Place 29km E of Tsukumi, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-12-04 07:54:14 Time when the event occurred. UTC/GMT
Updated 2017-12-04 08:16:34 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 1.085 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.18 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 90 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 us1000bkuf Id of event.
Event Code 1000bkuf An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000bkuf, A comma-separated list of event ids that are associated to an event.

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