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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.9 mag was detected near Nishinoomote in Japan


Earthquake location 30.7785S, 131.8154WA light earthquake with magnitude 4.9 (ml/mb) was reported 78 kilometers (48 miles) from Nishinoomote in Japan on Wednesday. Exact location of event, longitude 131.8154 East, latitude 30.7785 North, depth = 10 km. The temblor was picked up at 22:44:23 / 10:44 pm (local time epicenter). 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 10 km (6 miles). All ids that are associated to the event: us1000c0pi. Unique identifier: us1000c0pi. Global date and time of event UTC/GMT: 20/12/17 / 2017-12-20 13:44:23 / December 20, 2017 @ 1:44 pm.

Nearest cities/city/villages to epicentrum/hypocenter was Shibushi, Nichinan, Kushima (min 5000 pop). Close country/countries that might be effected, Japan (c. 127 288 000 pop). Event epicenter was 101 km (63 miles) from Nichinan (c. 44 200 pop), 96 km (60 miles) from Kushima (c. 22 100 pop), 102 km (63 miles) from Shibushi (c. 18 300 pop), 78 km (49 miles) from Nishinoomote (c. 17 800 pop).

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

Did you feel anything?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 78 km E of Nishinoomote, Japan.

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More information

Parameter Value Description
Magnitude 4.9 mb The magnitude for the event.
Longitude 131.8154° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 30.7785° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 78km 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 13:44:23 Time when the event occurred. UTC/GMT
Updated 2018-01-10 13:08:19 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 369 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 2.471 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.67 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 133 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 us1000c0pi Id of event.
Event Code 1000c0pi An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000c0pi, A comma-separated list of event ids that are associated to an event.

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