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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.9 mag, 92 km SE of Kushima, Japan

Earthquake location 30.9704S, 132.0208WA light earthquake with magnitude 4.9 (ml/mb) was detected on Tuesday, 92 kilometers (57 miles) from Kushima in Japan. Exact location of event, longitude 132.0208 East, latitude 30.9704 North, depth = 10 km. The 4.9-magnitude earthquake was detected at 08:23:53 / 8:23 am (local time epicenter). The earthquake was roughly at a depth of 10 km (6 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of event in UTC/GMT: 18/12/17 / 2017-12-18 23:23:53 / December 18, 2017 @ 11:23 pm. Event id: us1000bsuu. Ids that are associated to the earthquake: us1000bsuu.

Earthquake epicenter was 94 km (58 miles) from Nichinan (c. 44 200 pop), 94 km (58 miles) from Kushima (c. 22 100 pop), 103 km (64 miles) from Shibushi (c. 18 300 pop), 101 km (63 miles) from Nishinoomote (c. 17 800 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Shibushi, Nishinoomote, Kushima. Nearby country/countries, Japan (c. 127 288 000 pop) (That might be effected).

In the past 24 hours, there have been eight, in the last 10 days eight, in the past 30 days eight and in the last 365 days twenty-three 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. Each year there are an estimated 13,000 light quakes in the world.

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. 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: 92 km SE of Kushima, Japan.

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More information

Parameter Value Description
Magnitude 4.9 mb The magnitude for the event.
Longitude 132.0208° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 30.9704° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 92km SE of Kushima, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-12-18 23:23:53 Time when the event occurred. UTC/GMT
Updated 2017-12-26 06:30:06 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 2.357 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.84 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 85 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 us1000bsuu Id of event.
Event Code 1000bsuu An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000bsuu, A comma-separated list of event ids that are associated to an event.

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